p.40 #4 · A thinner sensor stack may be possible after all!
Rene, I have the 35 FLE, and it works great on the A7r Mod. I have the VM-E adapter, and I set the infinity stop on the 35 FLE and adjust the VM-E focus for infinity. The VM-E is pretty stiff, so it should not shift while you are taking shots. The shim thickness is important as you have a floating element.
p.40 #6 · A thinner sensor stack may be possible after all!
JaKo wrote:
..."Focusing at the center and at the corners yielded similar results" <-- hence mid-zone dip?
....
Thank you Jack. Anyway what I meant is that with this focal length, 50mm, the mod induces only a negligible amount of corner field curvature. On the other hand, the UWA still has a bit of that problem hence we have to focus at the corners to maximize the performance.
In general, bad corners @WO can either be because of field curvature or because of plain lack of contrast and resolution. In this case, it's the latter for the Lux 50 ASPH. I focused both beyond the infinity and behind the infinity point to check.
Charles: Thank you for your perspective. Personally, I would like to keep only a handful of lenses in my main line-up. So I'm looking for a 50 that can fit best to my needs. My Contax 55 Jahre is actually much sharper than the Lux 50 ASPH stopping down (a surprise for me); at WO, the Lux has less glow and PF and much smoother bokeh. I would keep the Jahre if only it's not such a bear to carry (thinking of selling both my Jahres), especially with the adapter. So I'm looking for a small RF 50 lens with smoother bokeh WO, well corrected for CA and decent sharpness, and stopped down with excellent sharpness. For now, I can only think of the 50 APO. If only the FE has no focus-by-wire.... I'm a 50 guy so I'm quite picky on this. Otherwise, I would get that ZM D35 already .
p.40 #7 · A thinner sensor stack may be possible after all!
xwing15 wrote:
Thank you very much Carles. I will let probably go off and build to an A7R.
René
Rene, you might want to modify your A7s. There will be minimal vignette and color cast in your pictures (compared to the A7r). A7s without AA is bloody sharp as well. I believe if my ZM 15 can perform well even at WO, any modern Leica lens would be able to do the same or better. My Elmar 24 is practically perfect at WO.
p.40 #8 · A thinner sensor stack may be possible after all!
thank you very much... that would be a possibility . there is an answer. which A7 is best suited for the conversion ? for the best Performance of Leica lenses?
p.40 #9 · A thinner sensor stack may be possible after all!
xwing15 wrote:
thank you very much... that would be a possibility . there is an answer. which A7 is best suited for the conversion ? for the best Performance of Leica lenses?
René
Rene, of course with these high performance M lenses, the higher MP the better to exploit the lenses. So naturally, the A7R would be the best. However, it has the most severe color cast and vignette in the series. As nice (and somewhat simple) as the Flat Field plug-in is, it does take a bit of joy out of the process and does slightly degrade the corners quality. I feel that if you want to go all out with the A7r, a monochrome mod should be the next logical step as well. This would slightly increase the sensitivity in visible light and you don't have to deal with color cast. The A7R.Mono has the potential of being among the sharpest right now.
A7 is, as expected, a middle-of-the-road option. As such, it might be the most enjoyable option if you need high MP.
However, IMVHO, the A7s is actually the best, especially after the mod (AA-less). You have a very small, very potent system. You can shoot anywhere at any light. Vignette and color cast are barely visible in some situations, invisible most of the time. Even after the full vignette correction in lightroom, I couldn't see any discernible noise difference between corners and center in day light shooting. Small, fast glass and high ISO enable me to shoot at any shutter speed I want at any light. This is quite liberating. The system just gets out of the way.
p.40 #10 · A thinner sensor stack may be possible after all!
Best thanks for the detailed response. I should dare to step with the A7s . Now I hear from you, sony monochrome conversion ?? oh very interesting. Really Possible? understood wrong?
p.40 #11 · A thinner sensor stack may be possible after all!
xwing15 wrote:
Best thanks for the detailed response. I should dare to step with the A7s . Now I hear from you, sony monochrome conversion ?? oh very interesting. Really Possible? understood wrong?
René
I'm in the process of exploring this myself. You can contact user Hypercam, or google his blog (hypercam monochrome). His price is much more reasonable than Maxmax. From my own research the past few days, you can use RawDigger to convert raw files to Tiff w/o Bayer demosaicing. There is also DCraw monochrome (MAC only).
p.40 #14 · A thinner sensor stack may be possible after all!
Thanks. I had a vague memory of the 28 Cron being discussed here but having tracked back through the thread I couldn't find anything. As soon as I read your post ^ I ... jumped straight back to Page 10 (at random) and right away there were the posts I'd remembered.
It certainly does look good. It's a little too purple/smudgey at the moment (on normal a7r) but once I can get the mod done, I'm well set.
I will probably have a day of reckoning at some point when I side by side the 28-R v2 and the 28 Cron-M and decide if I really can justify keeping both.
p.40 #15 · A thinner sensor stack may be possible after all!
One short question from me. I plan to have my A7 modified, do I have an option to remove the AA filter and whether it is desirable to do so?
Thanks in advance guys.
p.40 #18 · A thinner sensor stack may be possible after all!
Is there any consensus on how the mod affects other adapted lenses (canikon or a mount)? Can it make things worse? My read so far is that it becomes very imoortant to get the right thickness. Assuming that is true, are results better or just the same with the mod relative to unmodded cameras?
p.40 #20 · A thinner sensor stack may be possible after all!
hiepphotog wrote:
I'm in the process of exploring this myself. You can contact user Hypercam, or google his blog (hypercam monochrome). His price is much more reasonable than Maxmax. From my own research the past few days, you can use RawDigger to convert raw files to Tiff w/o Bayer demosaicing. There is also DCraw monochrome (MAC only).
Very interesting, I can think of a lot of things to do with a monochrome A7s!
btw. the standard version of dcraw will output images with no demosaicing with the -D option, you can download a ready compiled windows executable.
.