Timeline for What's the difference between using an Image Stabilization and not using it?
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| Dec 29, 2014 at 0:35 | comment | added | Michael C | @jdlugosz No. If you take a full frame image and crop out the outside 60%, what you have left is the inside 40%. If you then increase the size of that image to the same size as the uncropped image (i.e view both images at the same size on your monitor) you magnify any motion blur in the image. If there was any camera movement when the photo was taken, it will be less sharp because you are looking at a smaller piece of the image that has been magnified by a greater factor. | |
| Dec 29, 2014 at 0:30 | comment | added | Michael C | Because with a narrower Field of View a 1° shift in the optical axis will shift the image a greater percentage of the distance from one side of the sensor to the other. | |
| Dec 28, 2014 at 20:21 | comment | added | Romeo Ninov | Crop factor change the equivalent focal length. So you get "longer" lens and smaller AoV. So smaller shake will have bigger effect | |
| Dec 28, 2014 at 20:10 | comment | added | JDługosz | I'm questioning how crop factor changes the amount of shake, in @MichaelClark s formula. | |
| Dec 28, 2014 at 19:47 | comment | added | Romeo Ninov | No, @jdlugosz, this have nothing to do with IS. We discuss image stabilization and motion blur, created by camera shake. Sharpness of one image depend on many other factors too | |
| Dec 28, 2014 at 19:36 | comment | added | JDługosz | So If I take a full-frame image that was made with some lens X and exposure Y, then cropping out the center 60% of that image will make it more sharp? | |
| Dec 28, 2014 at 17:57 | history | edited | Romeo Ninov | CC BY-SA 3.0 |
added 122 characters in body
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| Dec 28, 2014 at 17:53 | comment | added | Michael C | With crop sensor cameras, such as any that could use an EF-S lens, the narrower field of view must also be taken into account. The 1/focal length rule-of-thumb becomes the 1/(focal length x crop factor) rule of thumb. Shooting with a 1.6x crop factor camera and a 300mm focal length, one would need to select a shutter speed of 1/480 second or faster to meet the rule-of thumb. Three stops worth of IS would get you down to around 1/60 second. | |
| Dec 28, 2014 at 17:35 | history | edited | Romeo Ninov | CC BY-SA 3.0 |
add some explanation
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| Dec 28, 2014 at 17:06 | history | answered | Romeo Ninov | CC BY-SA 3.0 |