p.29 #1 · Official: Sony A7 and A7R Fullframe Mirrorless
uhoh7 wrote:
I predict within a year we will see a sigma 24-70 f/2 in e-mount.
yes, chillren, f/2 :0
Maybe, but first for Sigma|Canon|Nikon|Sony Alpha full size DSLR mounts probably.
My Siggy 35/1.4 is heavy like a tank. I don't relish the thought of mounting something nearly that heavy on an A7 but I seem to recall that your sentiments lean in another direction! :-)
p.29 #6 · Official: Sony A7 and A7R Fullframe Mirrorless
RustyBug wrote
Hmmmm @ f4 with no IS and no IBIS.
Are you talking about the Zeiss 24-70/4 FE lens? You did notice it has the letters OSS in it's name, meaning it has stabilization?
Edit: beaten.
As far as anyone knows, only the 35 & 55mm primes won't feature OSS out of the announced lenses, whereas the 28-70 kit zoom, 24-70 Zeiss and 70-200 will all have it.
p.29 #9 · Official: Sony A7 and A7R Fullframe Mirrorless
Lee Saxon wrote:
I don't believe this rumor. Either the "full frame" part is wrong or the "under $2300" part is wrong. And it's not going to be compact either way.
I don't believe they will make an f/2 zoom either, weight alone would be around 1.5-1.7kg, but I reckon Sigma could pull off that price. Sigma lenses seem to settle at about half that of comparable Canon lenses and $2300 market price would be plausible.
I'd rather Sigma worked on a 24-85 f/2.8 OS and kept weight under 1kg and price well under $2K.
p.29 #10 · Official: Sony A7 and A7R Fullframe Mirrorless
The fog is still there re differences in the two sensors, there was a good and seemingly knowledgeable post on the 'WA lens on a7' thread last night, left me with the impression that there cannot be much difference for M lenses, which may make Ron Scheffler's finding on the a7 applicable largely to the a7r.
Still SAR is seemingly adamant that:
'..we just learned that *only the Sony A7r* (36MP) has the offset microlens design. This is very important to know if you plan to use third-party manual rangefinder lenses on your cameras (for example M-mount lenses).'
My guess is Sony would like this to be a little more clear in the run-up to full tests emerging, it being a significant factor in the release.
As I expected the a7r is better specced in some important ways, and still more may emerge - it really needs to be seen as a different camera compared to the a7, which is really a 'FF NEX'. I like the idea of machined AL dials also, must admit - a natty adjunct.
Too bad re EFCS is not on the a7r, it's excellent on the a99. Probably a reason.
p.29 #11 · Official: Sony A7 and A7R Fullframe Mirrorless
Sony know many would-be users are NEX upgraders plus some from Olympus and Fuji, who are accustomed to crimped DoF, maybe even prefer it and so will be very happy with FF results even with slower max aperture lenses.
No f2 zooms certainly, not from CZ, Sigma maybe? Sony's better recent Zeiss lenses have had very good focus fade characteristics. The place to look for fast lenses is the manual focus program Zeiss is working on for the a7 series. They may cost...
I still believe the well specced f4 Zeiss zoom is the most important in the range and will meet with good responses provided it is no worse optically than the f2.8 'kilogram set' turned out for everyman to use by C/N and Sony themselves in the ZA.
p.29 #12 · Official: Sony A7 and A7R Fullframe Mirrorless
Lee Saxon wrote:
I don't believe this rumor. Either the "full frame" part is wrong or the "under $2300" part is wrong. And it's not going to be compact either way.
1 year ago few here believed we'd see a FF E- mount still camera this fall.
My repeated opinion was Sony would be crazy not to do it.
Same really for sigma.
May not be compact, but an f/2 24-70 will get them huge attention. And you can bet the wild enthusiasm for A7s is on Sigma's radar.
nature's law: evolve, adapt, or perish, like 90% of all species, ever.
p.29 #13 · Official: Sony A7 and A7R Fullframe Mirrorless
uhoh7 wrote:
1 year ago few here believed we'd see a FF E- mount still camera this fall.
My repeated opinion was Sony would be crazy not to do it.
I was pretty certain Sony would do it, wasn't as certain which mount they'd use. Given the pricing of the D600 at the time it seemed likely to me that we'd see an under $2,000 model - check. The biggest surprise to me was the dual introduction of the A7 and A7r. I hate hoping but find myself hoping the A7r has some extra special sauce beyond merely being a D800 competitor, resolution wise. I would like to use MF lenses on such a camera, with abandon, but even a specific selection would be ok too.
Sony is smart to get ahead of the pack on this and attempt to own the segment before the others can catch up, and prices are if not cheap at least not stupid in relation to the rest of the market. And they gave E mount a permanent lease on life too. Smart stuff.
PS, on Sigma - I know they are trying to be the new improved Sigma but for the very first time in many years of buying lenses (speaking only of new, not used) I find myself having to ship my Siggy 35/1.4DG (Nikon mount) back to Sigma for repair and firmware correction.
It's focus just isn't reliable enough but I managed to work with it. Apparently they have a fix for D800 users. What drove me to ship it off to Toronto for repair: the lens mount is working loose and I feel a little silly holding a heavy lens flush to the camera mount to get focus across the frame. ;-)
p.29 #15 · Official: Sony A7 and A7R Fullframe Mirrorless
michaelwatkins wrote:
I would like to use MF lenses on such a camera, with abandon, but even a specific selection would be ok too.
I'm looking at MF glass on it as well. I've been shooting MF glass on the SLR/C (which is getting kinda long in the tooth, but still delivers for my style) without (truly absent) an AA filter for a while. The D800E "90 degree, unfilter" approach didn't tickle my fancy. I expect the A7R will finally be the replacement for my SLR/C once we figure out what's going on with the UWA side of things ... that and what will be the accompanying "need for speed" @ fps/AF strategy. Right now, I'm SLR/C and 1D II N on EF mount for my slow manual/fast AF combo ... but I sense a possible change in 2014.
p.29 #17 · Official: Sony A7 and A7R Fullframe Mirrorless
DamonJoyce wrote:
I know people are bemoaning RF performance on the A7, but is there any doubt that SLR lenses will behave any differently than the D800/5D?
I don't have the cash for RF, but I'm thinking about Zuiko 21mm and 50mm...
I think the A7R offset sensor provides potential to gain for legacy Oly's. I'll be clutching my 18 & 21 to see how they play with the A7R. The others 24, 28, 50, 135 will be watching in the wings as well for when I need to play the size/weight card.
p.29 #18 · Official: Sony A7 and A7R Fullframe Mirrorless
philip_pj wrote:
The fog is still there re differences in the two sensors, there was a good and seemingly knowledgeable post on the 'WA lens on a7' thread last night, left me with the impression that there cannot be much difference for M lenses, which may make Ron Scheffler's finding on the a7 applicable largely to the a7r.
Still SAR is seemingly adamant that:
'..we just learned that *only the Sony A7r* (36MP) has the offset microlens design. This is very important to know if you plan to use third-party manual rangefinder lenses on your cameras (for example M-mount lenses).'
....
I'll believe when I see it.
In the mean time I will plan to use small-ish SLR lenses on my pre-ordered A7.
p.29 #19 · Official: Sony A7 and A7R Fullframe Mirrorless
sebboh wrote:
it's just the same as canon and nikon. as with them it'll matter more for wide angle lenses.
Ming thein wrote:
"Don’t think you can get away with adaptors: the planarity of such adaptors is going to be absolutely critical, especially with such short flange distances and resolution numbers. You’ll actually be able to see the effects of a cheap, out-of-plane adaptor – it looks a little like a tilt. (I know this because I tried Hasselblad lenses on my D800E; none of the three adaptors I obtained had sufficiently tight tolerances to avoid this problem.)" http://blog.mingthein.com/2013/10/16/sony-a7-a7r/
Perhaps that is not correct or I misinterpreted. I thought perhaps the size of the adapter mattered somehow. Why does the short flange distance matter for non RF WA lenses?
Perhaps it doesn't.
p.29 #20 · Official: Sony A7 and A7R Fullframe Mirrorless
Michael Gordon wrote:
Ming thein wrote:
"Don’t think you can get away with adaptors: the planarity of such adaptors is going to be absolutely critical, especially with such short flange distances and resolution numbers. You’ll actually be able to see the effects of a cheap, out-of-plane adaptor – it looks a little like a tilt. (I know this because I tried Hasselblad lenses on my D800E; none of the three adaptors I obtained had sufficiently tight tolerances to avoid this problem.)" http://blog.mingthein.com/2013/10/16/sony-a7-a7r/
Perhaps that is not correct or I misinterpreted. I thought perhaps the size of the adapter mattered somehow. Why does the short flange distance matter for non RF WA lenses?
Perhaps it doesn't.
I don't think he has any idea what he's talking about with regard to the short flange distance if he's not specificly thinking of rangefinder wides. longer adapters are actually much easier to make with high strength and precision from a manufacturing standpoint. medium format lens are probably be more challenging than smaller lenses because of the size and weight. people have been using adapters on ff canon and ff nex shouldn't perform any different other than the greater pixel density. some adapters will of course be worse than others and this will be most noticeable with ultrawide lenses.
