Originally posted by Kayaker-J Hi. I guess you're another on a similar, or maybe complementary wavelength to my own, pinholecam, re: the sometimes purported 'must-have' qualities of the A7R. The not-slick aspects of the 'R' in the field do give me pause, given the body's high cost. But different folks have different needs... or, at least, think they do. I'll check out your previous posts concerning the A7 in action for further edification. And thanks for numerous other enlightening observations and creative efforts here, which I've taken note of in the past, particularly seeing a down-to-earth good sense at play. I have to confess to some gear-head tendencies I try to keep reasonably in check! 😐😕😮😉
BTW, could you state, or briefly re-state, your bottom line experiences with other manufacturers' or legacy/vintage wide angle lens compatibilities and incompatibilities, adapted to the A7? Do you think any of this experience is generalizable to other current technology sensor packages in FF (or APS-C, for that matter) that might show up in the near and foreseeable future? Thanks! -- Fred
Here is a short summary :
RF wides - CV12 (with vignetting, very little color cast); CV21/1.8; Leica WATE (these are the only three that really work w/o major issues from what I have tested and from info on many forums and websites)
SLR wides - generally no issues. Avoid lenses under 20mm. Generally, those under 20mm are a bit long in the tooth wrt lens design/ lack of aspherical elements/ coatings.
Many 17-19mm primes (of most brands) work, but don't expect very good corners or the last 1/8 of the edge.
The Samyang 14mm is one of the best options out there now.
Cheap, 14mm wide, good IQ, no issues on A7/r.
Canikon modern UWA zooms - no issues but big, heavy, expensive (kinda defeats the purpose imo)
RF wides are the ones which are so small that they should make sense on an A7, but unfortunately, most don't work well.
As for the sensor in the future...... who knows??
As can be seen, the higher pixel density is more punishing to legacy lenses on the edges and corners.
How much do ppl need? (or want?)
Curved sensors? (won't work well with current lenses)
Sensor stack (and Sony's choice of them)
IMO, its just a wait and see, since we are not in control of it.
The most that can be done is vote with your money and get the one you need (eg. 24mp vs 36mp)