Jabberwockt wrote:
Whichever lenses dont work well, hopefully i can pick up cheap on for use on my rangefinder in a few months FYI the Voigtlander 35/1.2's rear element gets closer to the sensor than the 50luxasph which isnt as wide. I think the safest small-ish 40mm to bet on right now is the voigtlander 40 ultron for canikon.
the contax g 45 looks like a better performer on the a7r (from phillip's shots with it) than the ultron is on the d800 and its a smaller lens on e-mount.
sebboh wrote:
the contax g 45 looks like a better performer on the a7r (from phillip's shots with it) than the ultron is on the d800 and its a smaller lens on e-mount.
EB-1 wrote:
Interesting. I have the 28, 35 and 45 around somewhere, but haven't used them in 15+ years.
EBH
it looks like on the a7r the 28mm will have a lot of issues with smearing and color casts, the 35mm is still an unknown, but it wasn't the greatest to begin with, and the 45mm looks great. also, prices have gone back up to justify selling them if you want.
rurouni wrote:
Has anyone come across any reports of how the 50 lux asph performs on the A7R?
The reports this far are mixed. Check the current thread by Phillip Reeve titled "Sony A7r some full resolution test shots". It's only four pages or so right now and there is some discussion on the lens and a couple of links.
in fact my g28 actually outresolved the OM 24/2.8, rokkor 24/2.8, and rokkor 28/2 in the corners after f/5.6 on the nex-7 (though it did need color correction in LR while the others didn't).
Agree. Making a blanket statement like "the G28 was terrible on NEX" is unfounded. I only used it on a NEX 5n, but I found the G28 to be the best out of any lens I tried in that focal length. It's even slightly sharper than the excellent Sigma 30mm e-mount.
If the G28 is poor in the corners on an A7r I'm not really overly concerned, because I loved the 42mm FOV I got from it on a NEX. So now I can likely just use a G45 on the A7r
Have anyone seen a comparison between the a7 and a7r with the same (edit: problematic) lens? That would be more interesting than anything, because then we could probably judge if one or the other sensor gives more smearing or more color shift, or both.
My guess from what's been seen this far, is that the a7 gives more smear (could be filter stack introduced curvature of field) but much less color shift.
Makten wrote:
My guess from what's been seen this far, is that the a7 gives more smear (could be filter stack introduced curvature of field) but much less color shift.
that sounds sensible to me. i think we'll have to wait a bit for a direct comparison between the two cameras. most people seem to only have access to one.
_julian_ wrote:
Ignoring the smearing for a moment. Anyone like to estimate how many stops separate the exposure on the guys face and the corners? Two stops exposure difference or more?
It looks like the A7 is better than the A7r so far as vignetting and light falloff is concerned?
Nah, that could just be a bad fatty adapter meant for APS-C NEX. I have no clue yet whether the A7 or A7r is better or worse at anything. Except that I dont want the laggy files the A7r will produce in a PP context.
wfrank wrote:
Nah, that could just be a bad fatty adapter meant for APS-C NEX.
The rear element protrudes way further back than any M-to-E adapter, so I don't understand how the adapter could have anything to do with the vignetting.
Edit: A forgotten parameter here is if any filter was used. A thick filter infront of the lens could probably cause just as bad smearing because of introduced curvature of field, as the filter infront of the sensor. At least for very wide lenses.
Makten wrote:
The rear element protrudes way further back than any M-to-E adapter, so I don't understand how the adapter could have anything to do with the vignetting.
Not on my CV 15/4.5 ver II. The (necessary) wings in the e-mount bayonet is appr a couple of mm's below the rear element regardless of distance setting. Not saying that it means it cause the vignetting, but it ought to be a possibility.
Edit: looks like your image is a CV 12/5.6 though they look quite similar
FYI the Voigtlander 35/1.2's rear element gets closer to the sensor than the 50luxasph which isnt as wide. I think the safest small-ish 40mm to bet on right now is the voigtlander 40 ultron for canikon. 
