May G-d send you condolences on your loss. We are all here for you.....
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For those seeing no difference between crop and ff:
- difference exists, and it's huge: in DoF and DR/IQ.
If you want to start shooting fashion, you must have gear according to the fashion level you want to shot. If it's some school stuff, then it's Kiss camera. Going to pro means going to (at least) FF.
I would suggest kiss+85mm as starter level and 5dm2 or 3 + 100mm IS/70-200 f4 is as semi-pro/pro.
How exactly do you read these patents when they come out? I see the aperture and the film plane, but what about the focal length? Is it apurture-FP? Is it the same basic concept in all modern lenses?
Focal length is the distance between is rear nodal point with the lens at infinity focus and the sensor/film plane. Note that the rear nodal point is an optical point which depends on lens design, may not fall within the physical dimension of the lens. Most telephoto lenses have the rear nodal point right behind the front element.
Capsule version - EF-S lenses project a smaller image circle, which covers an APS-C sensor but it too small for an APS-H or FF sensor. The advantage is that a smaller image circle means smaller elements (in the case of wide angle lenses), easier to design lenses, and thus lower costs. Most of Canon's EF-S lenses also have a short back focus (meaning a shorter physical length of the lens, Nikon and 3rd party lenses don't), which means a mirror larger than that for an APS-C sensor will hit the lens, so they designed the mount to prevent that from happening.
Jrista, you bore me.
Please. Either you have a well founded, factually valid response, or you just validated my point about you.
I feel I am succinct, though my point was valid. You have tremendous scientific knowledge of what should go on in inside a camera. However, you neglect to comment on or compare real world results with mathematical possibilities. I can agree even without your posts that the 7d should produce more fine detail...but mine and many others' real world testing can show the camera does not produce in the field what it does on paper.
Sure it does...your just comparing 1:1 results. The farther you push sensor resolution past lens resolution, the "softer" 1:1 crop will look. That doesn't change the fact that higher resolution sensors ARE capturing more detail. When pixels become significantly sub-detail sized, viewing things at 1:1 crop becomes incredibly useless. Scale your 7D photos DOWN to your 40D size, or scale a 40D photo UP to 7D size, and the superiority of the 7D in the real world, even WITH additional noise, will be clear.
If by some fluke they are not, then the problem is not the camera...its the way the camera is used. Find ways to eliminate camera shake, make sure your using an "ideal" aperture (i.e. an aperture within that band between a little wider than f/3 to about f/6.2), or anything else that can improve your technique.
As for being succinct...sure, however telling me I bore you is simply an evasion, not a counter argument. ;P