Just tried it out. Questions......?

I just booted up Photoshop CS5. The first thing I went to was the Lens Correction. I'm a Canon DSLR user. I see they have a lot of cameras (including several Canons) listed, and a lot of lenses. But very few of the lenses are matched up with a particular camera to make corrections. Example: I used my 70-200 F/2.8 IS Canon Lens with 3 different cameras: 5d Mark i, 5d mark ii, and 1d mark III. None of these 3 cameras are listed in combination with the 70-200 lens. The only camera matched to that lens it the 1Ds Mark III. I don't have that camera. So a person would have to make their own correction via the Lens Profile Creator program. Am I correct in what I'm saying? I'm hoping that someone will take the time to do this for us. Most of us don't have time to make our own lens correction profiles. Just wanted to be sure I'm understanding how all of this works.
Dan

Hi Dan,
The camera model specified in the lens profile shows the reference camera that was used to create the profile. Lens profiles created with a reference camera with bigger sensor (like the full frame Canon 1Ds Mark III) works well with other cameras that have a similar sized or smaller sensor, such as  5d Mark i, 5d mark ii, and 1d mark III, or 40D/50D etc. On the other hand, if a lens profile is created from images shot from 40D/50D, the profile might not work well on full frame cameras, because the chart images captured by 40D/50D does not offer any calibration samples beyond the 1.6 sensor crop factor. The resulting lens profiles beyond the 1.6 sensor crop factor is not well defined. PS CS5/ACR 6.1/LR3 have to rely on the extrapolation property of such lens profiles. It may or may not work well for any given lens profile.
This aspect is documented in the FAQ http://labs.adobe.com/technologies/lensprofile_creator/faq.html as well as the shooting guide.
If you're doing lens profiling, shoot the calibration chart images using your camera that has the largest sensor (full frame). This will make sure the resulting lens profile can be applied to a variety of cameras, shooting with the same lens.

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