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A Featured underwater cameras Article
Getting Sharper Images, Right From Your Camera
Yes, it's possible to sharpen images digitally post-shoot, but it's always best to get the sharpest shot up front, before your photo is even developed. It's really quite easy to improve the sharpness of your daily shots - just consider these concepts!
1) Use a Tripod, if at all possible
Tripods are by far the best method of ensuring image sharpness right in the camera. The platform created by your tripod stabilizes the camera such that camera shake due to human interference is not an issue, regardless of the level of light available to you, and thus the length of your exposure. As a rule of thumb, a tripod should be used for all exposures longer than 1/30th of a second (e.g. 1/15th of a second or longer is too slow for you to get a crisp shot from handholding - increase your ISO to see if you can get a quicker exposure).
There are many types of tripods available - see my article on Tripods for more information. If you are able to use a tripod then the only shake you have to worry about now is subject shake - flowers moving in the wind, people moving or blinking, etc.
2) Use a Proper Handholding Posture when a tripod is not practical
When tripods are not practical or if you don't have access to one, you should assume the proper handholding posture to minimize camera shake. This method of stabilizing your camera will never be as good as the use of a tripod, but it's not bad - it all depends on whether you have a steady hand when the pressure is on!
a) Hold the camera with both hands such that your right hand has a finger on the shutter release button, and your left hand cradles the camera body (not the lens - it's ok to rest your fingers against the lens, but be sure you don't interfere with auto focus).
b) Press your elbows tightly against your torso and raise the camera to eye level (for SLR) or so that you can see the LCD (digital P&S), but never hold the camera with extended arms as this increases shake.
c) Stabilize your body against a solid object if you can - a wall or lamp post will do.
d) Use the focus lock feature by depressing the shutter release button half way; once the focus is locked, take a deep breath, and depress the button fully to take your shot while exhaling.
3) Use Image Stabilization (IS) or Vibration Reduction (VR) Lenses
Some lenses for SLR cameras include built-in methods of reducing camera shake. If you have such a lens, make sure you enable IS or VR when shooting hand-held. This technology reduces the effects of camera motion on image sharpness by countering the slight lens movements that result in a blurry image. In general, these lenses allow you to hand-hold a camera at a full stop increase over non-IS or non-VR lenses. These lenses are much more expensive than regular lenses, but if you find yourself hand-holding most of your shots with blurry results, it might be worth the investment. See my article on lens characteristics for more information.
4) Increase your shutter speed
The faster your shutter speed, the less aparent camera shake will be. Obviously, if the shutter is left open for 4 seconds then the slightest movement will result in a soft image, even the movement of the shutter release button! Conversely, if the shutter speed is 1/2000th of a seoncd then hardly any movement will result in image blur. As a guideline, at ISO 100, you should restrict your handheld shots to the reciprocal of your lens focal length. For example, with a 60mm lens, you should not hand-hold any shots that require a slower shutter speed than 1/60th second. (Of course, with an image-stabilized lens, that rule becomes 1/30th second.)
If you are stuck handholding your camera at shutter speeds that are slower than the reciprocal, then you should use flash or increase your ISO setting. The lower the ISO setting, the lower the noise, so it's always best to stick with ISO 100; however, to reduce camera shake, it may be worth the trade-off to raise the ISO to 200, 400, or even higher. It all depends on your camera and how much noise it introduces at certain ISO levels. Some cameras are better than others, but some photographers have steadier hands than others!
5) Check your AF (auto-focus) sensors to confirm area of highest focus
When using auto-focus mode, most cameras confirm with tiny red lights which part of the image is in sharpest focus before taking the shot. Be sure your camera has the same subject in mind that you do, or else your main subject may not be emphasized the way you had imagined. If the sensor picking up the area of focused is not hitting the area you want, it's best to set it manually. You can do this by disabling auto-focus, or by recomposing your scene such that the correct area is selected, depressing the shutter release button half way to keep the exposure locked, and returning to your original composition.
6) Use continuous shooting mode
By taking two or more shots of the same scene in rapid succession (by keeping the shutter release button depressed), you remove the effect that pressing the shutter release button can have on camera shake. In other words, your second shot (and any subsequent shots, until you release the button) will not experience any shake due to vibration of the shutter release since the first shot took the brunt of it.
7) Use moderate apertures
The rule here is that your lens does its best focusing when set to two stops smaller than its widest aperture. For example, if your lens' widest aperture is f/2.8, then it will produce the sharpest images (not at f/4) at f/5.6. Even high quality lenses with aspheric and low-dispersion glass elements may not produce their sharpest images at their widest apertures.
For more photography articles, please visit Jennifer Clarkson's website at http://www.jclarksonphotography.com. To learn more about the books in her eSeries on Digital Photography, or to promote sales, please visit the following sites: |
underwater cameras Items For Viewing
Nikon D200 Digital Field Guide
Nikon D200 Digital Field Guide
You've been waiting for an affordable dSLR with the quality and versatility of the Nikon D200. Packed with great techniques and full-color examples, this book helps you take advantage of all the D200's features. From the Quick Tour on how to use your D200 to the intricacies of setting white balance, working with the flash, converting NEF, and shooting superb images in more than twenty common situations, it's all here - and it goes anywhere you and your Nikon can.
* Get a clear understanding of your camera's challenges and advantages
* Choose the right shooting, exposure, and focus modes for each type of shot
* Use extended ISO and noise reduction
* Explore how various lenses can enhance your work
* Work with different flash options and available light
Visit our Web site at www.wiley.com/compbooks
Customer Review: NIkon D200 Digital Field Guide by David Busch
I have purchased (4) instruction books for my Nikon D200 Camera. By far David Busch's Field Guide Book is the best ever. It is easy to understand, thorough, easy to locate specific topics while in the field. It never leaves my camera bag wherever I'm on a photo adventure. It you have a D200 you must have this book.
Customer Review: Good for my needs
Great for my needs being a D200 novice, good flow and explanations and step by step as needed at times.
Magic Lantern Guides: Canon EOS 40D (Magic Lantern Guides)
Magic Lantern Guides: Canon EOS 40D (Magic Lantern Guides)
Rob Sheppard, one of the world's top photography writers and a frequent contributer to the Magic Lantern series, writes the must-have book on Canon's exciting new upper-level, semi-pro model. The EOS 40D offers Canon's EOS Integrated Cleaning System, Live View Function, a more powerful DIGIC III Image Processor, along with a 10.1-megapixel CMOS sensor and 3.0-inch LCD monitor
Customer Review: Excellent and comprehensive guide to the 40D
Magic Lantern Guides: Canon EOS 40D (Magic Lantern Guides)
I am surpised by the less than enthusiastic reviews of this book. I have owned all the Digital Rebels to date and a few months back bought a 40D. This book has been an excellent description and discussion of the various features of the 40D. I especially like Rob Shepards approach of giving detailed descriptions often followed up by a clearly differentiated "insider view" opinion of where and when he finds a particular feature useful. True, a larger format and color might be prettier but I have found this to be the book that makes me comfortable with this excellent camera. This will be the book that travels with the camera.
Customer Review: This book went back to the store
I returned the book fairly soon - very dry, poor written. It was not clear enough for a beginner as myself. I felt like reading a manual. Plus, b&w pictures - what a joke!
Sony Alpha DSLR-A100 Digital Field Guide
Sony Alpha DSLR-A100 Digital Field Guide
Start taking the best photos of your life--today
Your Sony Alpha DSLR-A100 has dozens of amazing features. Would you rather spend hours studying the manual or snapping pictures? This guide gets you on the fast track, with full-color illustrations that help you identify and understand every button and dial and the effects you can shoot for. Learn to use every control, what pitfalls to dodge, and the secrets of capturing spectacular images in more than 20 shooting situations. Wherever your A100 goes, this book should go too.
* Follow an illustrated road map that makes it easy to locate the controls on your camera and learn what each does
* Review photographic essentials including exposure, lighting, and lens choices
* Learn to capture great images of tricky subjects like flowers, pets, sporting events, sunsets, and fireworks
* Explore such techniques as fill flash, infrared, panoramic, macro, and filter effect photography
* Troubleshoot potential problems with your A100
Visit our Web site at www.wiley.com/compbooks
Customer Review: Don't leave home without it.
This very clearly written book goes with me in my camera bag all the time.
Pete b
Customer Review: Perfect guide beyond the standard Sony guide
I have read a great deal of this book and I am very satisfied about the new things that I have learned to use this excellent camera.
I recommend this book to every one who is buying or has bought this camera.
Perfect Video & Photo Editor Platinum Edition by Cosmi
Perfect Video & Photo Editor Platinum Edition by Cosmi
Perfect Video & Photo Editor Platinum
Edit your photos and videos, then store them in specially designed albums!
Perfect Platinum Video & Photo Editor contains features that have never been seen before in one package!
This power- packed editing suite allows you to add effects to both video and still photos. Enhance, retouch, edit, compile, add titles and sound, and preserve your special memories forever.
Key Features
· Import Audio!
· Editing Tools!
· Add Special Effects!
· Supports Motion and Still Images!
· Includes Fonts!
· Edit Videos Like A Pro!
· Edit your video project with drag and drop ease using a timeline model that makes adding and arranging audio, video and titles a breeze!
· Quickly arrange clips and add transitions using our storyboard layout
Add up to 75 Different Audio & Video Tracks
· Windows Media Audio (WMA).
· Windows Media Video (WMV).
· Advanced Streaming Format (ASF).
· Motion Picture Experts Group (MPEG).
· Audio-Video Interleaved (AVI).
· QuickTime (Ver. 2 and lower).
· WAV - AIFF - AU.
· SND - MP3.
Zoom In For More Detail
· Zoom out for overview!
· Preview editing changes in real-time and full video resolution!
· Add Special Effects!
· Instantly enhance your video productions with stunning special effects, cool fonts and more!
Flow Scene-To-Scene With 146 Hollywood-Style Transitions
· Add fade in/out effects to audio!
· Add titles and credits for stunning results!
· Add still images!
· Share Memorable Movies!
· Sharing your perfect movies is easy too!
Instantly Create Video Web Pages
· Send videos via email!
· Save video clips back to digital camera!
· 500 Fonts FREE!
· From whimsical to serious, now you can add incredible-looking titles and credits to your video memories using 500 FREE fonts.
underwater cameras in the news
Blob crowd is biggest ever - Phoenixville News
Sat, 12 Jul 2008 12:45:01 GMT
Blob crowd is biggest ever Phoenixville News, PA - With a bevy of camcorders and cameras waiting outside the theatre, Mary Foote, executive director, Association for the Colonial Theatre (ACT), ... |
Digital Photo: Extreme vacation photography (Macworld)
Mon, 07 Jul 2008 17:50:43 GMT
Want to add some pizazz to those vacation snapshots? Derrick Story explains how to take your digital camera underwater or up into the sky and get photographs that'll wow the folks back home.
Movie Preview: Journey to the Center of the Earth 3D (Entertainment Weekly)
Mon, 14 Jul 2008 18:30:40 GMT
Can't wait until Christmas of 2009 for James Cameron's Avatar ? This family adventure might tide you over. Shot with Cameron's high-tech 3-D cameras and directed by Eric Brevig, his Abyss visual-effects photographer, Journey will be the first live-action narrative feature film shot in digital 3-D.
color security camera
sony cybershot digital cameras
wireless hidden cameras
A Featured underwater cameras Article
Getting Sharper Images, Right From Your Camera
Yes, it's possible to sharpen images digitally post-shoot, but it's always best to get the sharpest shot up front, before your photo is even developed. It's really quite easy to improve the sharpness of your daily shots - just consider these concepts!
1) Use a Tripod, if at all possible
Tripods are by far the best method of ensuring image sharpness right in the camera. The platform created by your tripod stabilizes the camera such that camera shake due to human interference is not an issue, regardless of the level of light available to you, and thus the length of your exposure. As a rule of thumb, a tripod should be used for all exposures longer than 1/30th of a second (e.g. 1/15th of a second or longer is too slow for you to get a crisp shot from handholding - increase your ISO to see if you can get a quicker exposure).
There are many types of tripods available - see my article on Tripods for more information. If you are able to use a tripod then the only shake you have to worry about now is subject shake - flowers moving in the wind, people moving or blinking, etc.
2) Use a Proper Handholding Posture when a tripod is not practical
When tripods are not practical or if you don't have access to one, you should assume the proper handholding posture to minimize camera shake. This method of stabilizing your camera will never be as good as the use of a tripod, but it's not bad - it all depends on whether you have a steady hand when the pressure is on!
a) Hold the camera with both hands such that your right hand has a finger on the shutter release button, and your left hand cradles the camera body (not the lens - it's ok to rest your fingers against the lens, but be sure you don't interfere with auto focus).
b) Press your elbows tightly against your torso and raise the camera to eye level (for SLR) or so that you can see the LCD (digital P&S), but never hold the camera with extended arms as this increases shake.
c) Stabilize your body against a solid object if you can - a wall or lamp post will do.
d) Use the focus lock feature by depressing the shutter release button half way; once the focus is locked, take a deep breath, and depress the button fully to take your shot while exhaling.
3) Use Image Stabilization (IS) or Vibration Reduction (VR) Lenses
Some lenses for SLR cameras include built-in methods of reducing camera shake. If you have such a lens, make sure you enable IS or VR when shooting hand-held. This technology reduces the effects of camera motion on image sharpness by countering the slight lens movements that result in a blurry image. In general, these lenses allow you to hand-hold a camera at a full stop increase over non-IS or non-VR lenses. These lenses are much more expensive than regular lenses, but if you find yourself hand-holding most of your shots with blurry results, it might be worth the investment. See my article on lens characteristics for more information.
4) Increase your shutter speed
The faster your shutter speed, the less aparent camera shake will be. Obviously, if the shutter is left open for 4 seconds then the slightest movement will result in a soft image, even the movement of the shutter release button! Conversely, if the shutter speed is 1/2000th of a seoncd then hardly any movement will result in image blur. As a guideline, at ISO 100, you should restrict your handheld shots to the reciprocal of your lens focal length. For example, with a 60mm lens, you should not hand-hold any shots that require a slower shutter speed than 1/60th second. (Of course, with an image-stabilized lens, that rule becomes 1/30th second.)
If you are stuck handholding your camera at shutter speeds that are slower than the reciprocal, then you should use flash or increase your ISO setting. The lower the ISO setting, the lower the noise, so it's always best to stick with ISO 100; however, to reduce camera shake, it may be worth the trade-off to raise the ISO to 200, 400, or even higher. It all depends on your camera and how much noise it introduces at certain ISO levels. Some cameras are better than others, but some photographers have steadier hands than others!
5) Check your AF (auto-focus) sensors to confirm area of highest focus
When using auto-focus mode, most cameras confirm with tiny red lights which part of the image is in sharpest focus before taking the shot. Be sure your camera has the same subject in mind that you do, or else your main subject may not be emphasized the way you had imagined. If the sensor picking up the area of focused is not hitting the area you want, it's best to set it manually. You can do this by disabling auto-focus, or by recomposing your scene such that the correct area is selected, depressing the shutter release button half way to keep the exposure locked, and returning to your original composition.
6) Use continuous shooting mode
By taking two or more shots of the same scene in rapid succession (by keeping the shutter release button depressed), you remove the effect that pressing the shutter release button can have on camera shake. In other words, your second shot (and any subsequent shots, until you release the button) will not experience any shake due to vibration of the shutter release since the first shot took the brunt of it.
7) Use moderate apertures
The rule here is that your lens does its best focusing when set to two stops smaller than its widest aperture. For example, if your lens' widest aperture is f/2.8, then it will produce the sharpest images (not at f/4) at f/5.6. Even high quality lenses with aspheric and low-dispersion glass elements may not produce their sharpest images at their widest apertures.
For more photography articles, please visit Jennifer Clarkson's website at http://www.jclarksonphotography.com. To learn more about the books in her eSeries on Digital Photography, or to promote sales, please visit the following sites: |
underwater cameras Items For Viewing
Nikon D200 Digital Field Guide
Nikon D200 Digital Field Guide
You've been waiting for an affordable dSLR with the quality and versatility of the Nikon D200. Packed with great techniques and full-color examples, this book helps you take advantage of all the D200's features. From the Quick Tour on how to use your D200 to the intricacies of setting white balance, working with the flash, converting NEF, and shooting superb images in more than twenty common situations, it's all here - and it goes anywhere you and your Nikon can.
* Get a clear understanding of your camera's challenges and advantages
* Choose the right shooting, exposure, and focus modes for each type of shot
* Use extended ISO and noise reduction
* Explore how various lenses can enhance your work
* Work with different flash options and available light
Visit our Web site at www.wiley.com/compbooks
Customer Review: NIkon D200 Digital Field Guide by David Busch
I have purchased (4) instruction books for my Nikon D200 Camera. By far David Busch's Field Guide Book is the best ever. It is easy to understand, thorough, easy to locate specific topics while in the field. It never leaves my camera bag wherever I'm on a photo adventure. It you have a D200 you must have this book.
Customer Review: Good for my needs
Great for my needs being a D200 novice, good flow and explanations and step by step as needed at times.
Magic Lantern Guides: Canon EOS 40D (Magic Lantern Guides)
Magic Lantern Guides: Canon EOS 40D (Magic Lantern Guides)
Rob Sheppard, one of the world's top photography writers and a frequent contributer to the Magic Lantern series, writes the must-have book on Canon's exciting new upper-level, semi-pro model. The EOS 40D offers Canon's EOS Integrated Cleaning System, Live View Function, a more powerful DIGIC III Image Processor, along with a 10.1-megapixel CMOS sensor and 3.0-inch LCD monitor
Customer Review: Excellent and comprehensive guide to the 40D
Magic Lantern Guides: Canon EOS 40D (Magic Lantern Guides)
I am surpised by the less than enthusiastic reviews of this book. I have owned all the Digital Rebels to date and a few months back bought a 40D. This book has been an excellent description and discussion of the various features of the 40D. I especially like Rob Shepards approach of giving detailed descriptions often followed up by a clearly differentiated "insider view" opinion of where and when he finds a particular feature useful. True, a larger format and color might be prettier but I have found this to be the book that makes me comfortable with this excellent camera. This will be the book that travels with the camera.
Customer Review: This book went back to the store
I returned the book fairly soon - very dry, poor written. It was not clear enough for a beginner as myself. I felt like reading a manual. Plus, b&w pictures - what a joke!
Sony Alpha DSLR-A100 Digital Field Guide
Sony Alpha DSLR-A100 Digital Field Guide
Start taking the best photos of your life--today
Your Sony Alpha DSLR-A100 has dozens of amazing features. Would you rather spend hours studying the manual or snapping pictures? This guide gets you on the fast track, with full-color illustrations that help you identify and understand every button and dial and the effects you can shoot for. Learn to use every control, what pitfalls to dodge, and the secrets of capturing spectacular images in more than 20 shooting situations. Wherever your A100 goes, this book should go too.
* Follow an illustrated road map that makes it easy to locate the controls on your camera and learn what each does
* Review photographic essentials including exposure, lighting, and lens choices
* Learn to capture great images of tricky subjects like flowers, pets, sporting events, sunsets, and fireworks
* Explore such techniques as fill flash, infrared, panoramic, macro, and filter effect photography
* Troubleshoot potential problems with your A100
Visit our Web site at www.wiley.com/compbooks
Customer Review: Don't leave home without it.
This very clearly written book goes with me in my camera bag all the time.
Pete b
Customer Review: Perfect guide beyond the standard Sony guide
I have read a great deal of this book and I am very satisfied about the new things that I have learned to use this excellent camera.
I recommend this book to every one who is buying or has bought this camera.
Perfect Video & Photo Editor Platinum Edition by Cosmi
Perfect Video & Photo Editor Platinum Edition by Cosmi
Perfect Video & Photo Editor Platinum
Edit your photos and videos, then store them in specially designed albums!
Perfect Platinum Video & Photo Editor contains features that have never been seen before in one package!
This power- packed editing suite allows you to add effects to both video and still photos. Enhance, retouch, edit, compile, add titles and sound, and preserve your special memories forever.
Key Features
· Import Audio!
· Editing Tools!
· Add Special Effects!
· Supports Motion and Still Images!
· Includes Fonts!
· Edit Videos Like A Pro!
· Edit your video project with drag and drop ease using a timeline model that makes adding and arranging audio, video and titles a breeze!
· Quickly arrange clips and add transitions using our storyboard layout
Add up to 75 Different Audio & Video Tracks
· Windows Media Audio (WMA).
· Windows Media Video (WMV).
· Advanced Streaming Format (ASF).
· Motion Picture Experts Group (MPEG).
· Audio-Video Interleaved (AVI).
· QuickTime (Ver. 2 and lower).
· WAV - AIFF - AU.
· SND - MP3.
Zoom In For More Detail
· Zoom out for overview!
· Preview editing changes in real-time and full video resolution!
· Add Special Effects!
· Instantly enhance your video productions with stunning special effects, cool fonts and more!
Flow Scene-To-Scene With 146 Hollywood-Style Transitions
· Add fade in/out effects to audio!
· Add titles and credits for stunning results!
· Add still images!
· Share Memorable Movies!
· Sharing your perfect movies is easy too!
Instantly Create Video Web Pages
· Send videos via email!
· Save video clips back to digital camera!
· 500 Fonts FREE!
· From whimsical to serious, now you can add incredible-looking titles and credits to your video memories using 500 FREE fonts.
underwater cameras in the news
Blob crowd is biggest ever - Phoenixville News
Sat, 12 Jul 2008 12:45:01 GMT
Blob crowd is biggest ever Phoenixville News, PA - With a bevy of camcorders and cameras waiting outside the theatre, Mary Foote, executive director, Association for the Colonial Theatre (ACT), ... |
Digital Photo: Extreme vacation photography (Macworld)
Mon, 07 Jul 2008 17:50:43 GMT
Want to add some pizazz to those vacation snapshots? Derrick Story explains how to take your digital camera underwater or up into the sky and get photographs that'll wow the folks back home.
Movie Preview: Journey to the Center of the Earth 3D (Entertainment Weekly)
Mon, 14 Jul 2008 18:30:40 GMT
Can't wait until Christmas of 2009 for James Cameron's Avatar ? This family adventure might tide you over. Shot with Cameron's high-tech 3-D cameras and directed by Eric Brevig, his Abyss visual-effects photographer, Journey will be the first live-action narrative feature film shot in digital 3-D.
color security camera
sony cybershot digital cameras
wireless hidden cameras
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