michael49 wrote:
Wow, the 7r looks much better to my eyes, even at lower ISO's.
Wow you aren't kidding, that's insane. Assuming this comparison is legit, that's a remarkable difference, even at base ISO.
Much, much more noticeable than D800E vs 800. I mean, I have 20/15 vision, I use a retina Macbook and I'm a pixel peeping addict, and I swear half the time I had to convince myself, mentally, that I could see the 800E vs 800 differences.
Not so with those posted samples...again, assuming they're legit.
Edit -- ah darn my stupid brain just kicked in and I remembered the A7 is "only" 24MP, so this appears a down-sampled A7r vs a native A7...not exactly an even playing field as far as resolution (like 800E vs 800 is), so perhaps that explains the detail comparison differences.
Which just means someone printing normal sizes should still see significant benefit from the A7r!
I think the ZM25, G45, and G90 would make a killer kit, but I'm not holding my breath that any "Biogon" type designs will work 100% of the time without cornerfix.
Jabberwockt wrote:
I think the ZM25, G45, and G90 would make a killer kit, but I'm not holding my breath that any "Biogon" type designs will work 100% of the time without cornerfix.
yeah, they don't with the m240 either by all accounts, so i wouldn't expect them to on the sony either. i don't mind using the LR flat field plugin at all though, i'm just worried about smearing not color castes.
I pre-ordered the 7r this morning. I was ready to click the button on the 7 and then my Summilux 35, and 50, 85, and 300 L's got together to form the "think of how impressive we'd be with 36MP of resolution" coalition and my resolve crumbled.
sebboh wrote:
yeah, they don't with the m240 either by all accounts, so i wouldn't expect them to on the sony either. i don't mind using the LR flat field plugin at all though, i'm just worried about smearing not color castes.
Really Derek? I thought the ZM25 worked well on M9 and M240 but I could be mistaken...
The ZM25 seems not to smear on the M9, colorcast and vignette is definitely there though. Not holding my breath, but hopeful that Sony can do better than a camera from 2009 in this regard.
The ZM18 working well may be a good sign, since it does smear slightly on a 5N which is ASPC.
Gary Clennan wrote:
Really Derek? I thought the ZM25 worked well on M9 and M240 but I could be mistaken...
i meant biogon designs in general (as per the second part of his statement), not jabberwockt's list which is mostly not biogons (i'm sure the g45 and g90 will be fine). the 25/2.8 seems to be nearly free from problems while a number of others seem worse on the m240.
Just a FYI. The ZM25 works pretty well on the M240. There's still a bit of residual edge colour there if you really look for it, especially if its coded as a 24/2.8 ASPH...28/2 coding works pretty well but needs the 28/90 frameline if you are coding the lens.
The ZM 25 is probably the most behaved wide angle in the ZM line up (below 35mm). I use it all the time without any correction on the M9 and rarely get any casts. The ZM 18 can create very strong casts at infinity, and none of the correction profiles works perfectly with it, but at medium and close distances, the cast is very negligible and not really noticeable.
Jabberwockt wrote:
The ZM25 seems not to smear on the M9, colorcast and vignette is definitely there though. Not holding my breath, but hopeful that Sony can do better than a camera from 2009 in this regard.
The ZM18 working well may be a good sign, since it does smear slightly on a 5N which is ASPC.
sebboh wrote:
ok, i'm super excited to make this image a reality now:
I hope to do so as well though I'm actually more excited about mounting the G45 than the G28 on it. Do you think it the G28 will work as well with the A7 compared to the A7R?
edwardkaraa wrote:
The ZM 25 is probably the most behaved wide angle in the ZM line up (below 35mm). I use it all the time without any correction on the M9 and rarely get any casts. The ZM 18 can create very strong casts at infinity, and none of the correction profiles works perfectly with it, but at medium and close distances, the cast is very negligible and not really noticeable.
That's great to hear regarding the ZM25. I'm guessing the rangefinder wide-angle lens performance should at least be on par with the M9. I plan to use my ZM25 and ZM35/2.8, as well as my CV35/1.2 on an A7r. We'll see how the CV15 pans out, may get sold or relegated to permanent GXR duty. I knew when this time came, I'd have to decide on a 50mm lens. It will be tough to pick between a ZM50 or the new Zeiss E-mount 55/1.8.
uscmatt99 wrote:
That's great to hear regarding the ZM25. I'm guessing the rangefinder wide-angle lens performance should at least be on par with the M9. I plan to use my ZM25 and ZM35/2.8, as well as my CV35/1.2 on an A7r. We'll see how the CV15 pans out, may get sold or relegated to permanent GXR duty. I knew when this time came, I'd have to decide on a 50mm lens. It will be tough to pick between a ZM50 or the new Zeiss E-mount 55/1.8.
Matt, the CV 15 is quite problematic on the M9 so I wouldn't have too much hope.
From what I've seen from the 35/2.8 and 55/1.8 so far, they seem to easily outperform the ZM 50/2 and both biogons 35. Most importantly, the bokeh seems outstanding and very much in line with the sonnar on the RX1. Also the resolution seems to be excellent across the frame. I am quite sure I will get these two, and only use the ZM 25/2.8 and 85/2 on the 7r.
What Brian reports pretty much fits with my experience in NEX 7, and thus expectations from the A7R. From least problematic to most troublesome: G28, Leica 24, ZM 25, ZM 18... and then those I could never sort out, ZM 21, G 21.
What I find interesting, and which I think tells us something, is that, on NEX 7, color shift is pretty much a straight line down each side. On A7r, it seems to be a "corner thing", which is why it is called vignetting, but which IMHO it is not, since the color is indeed shifted in the corner.
Either way, my guess is that CornerFix will clean it up well.
The other thing to remember is that the Touit 12mm is completely clean on APS-C, meaning that, on an equivalent FF sensor, 18mm should have the potential of being trouble-free. Because the A7r is quite a bit newer, I expect that we can get something really clean down to maybe 15mm if Zeiss decide to make something that wide.
