Originally posted by jsherman999 APS-C could very well eventually have the same DR. As far as having the same FOV or same DOF at same aperture... I have to ask: so what?
The paradigms change, as do the lenses you use. There is nothing magical (or un-reproduceable) about the FOV/FL or DOF/aperture ratios of Full Frame.
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Jay,
What you have said here is very, very true. There is truly nothing magical about FF.
On the other hand...
Historically, the 35mm film format represented the smallest size that could consistently produce quality images from available optics. And even at that, the consensus was that it represented a compromise. Attempts were made with film to move people towards a smaller format, but even with quality optics half-frame, 110 and APS (film) never really cut it.
Now the argument might be made that modern optics for APS-C have overcome the problem. If that were the case, I would like someone to point me to the APS-C equivalent of my Tamron 28/2.5. When I bought this lens in the early 1980s, it cost about $75 and provided sharp, contrasty, distortion-free images with almost no vignette or CA. Might I also mention that it has a fairly fast maximum aperture?
That is all I am asking for, a wide-angle prime with the following features:
- Moderate price
- Sharp
- Fast aperture
- 75-85 degree FOV
- True rectilinear without barrel distortion
- No vignette
- Low CA
A lens with these features was easy to make for 35mm, why is it absent for APS-C if the format is strictly equivalent?
Steve
(
Link to a description of my Tammy)