p.36 #1 · Official: Sony A7 and A7R Fullframe Mirrorless
alwang wrote:
Interesting, it looks like Voigtlander is releasing their own helicoid m-mount-e-mount adapter, with close focusing ability. I have no real issue with the build on my Hawk's adapter, but perhaps this will be even more solid.
p.36 #3 · Official: Sony A7 and A7R Fullframe Mirrorless
I see no reason why a good helicoid adapter should be more problematic than the focusing ring of the lens itself.. After all, people has been using Hawks adapters on the NEX-7, which has higher pixel density than the 36Mp of the A7r.
p.36 #4 · Official: Sony A7 and A7R Fullframe Mirrorless
nandadevieast wrote:
It will be interesting to mount Tokina 11-16 F2.8 (aps-c) on A7r. Many use it successfully on full frame especially as a 16mm wide.
And why not, even zeiss E 24 1.8 looks like it will be perfect..
I tried using the Tokina crop on FF ... per that recommendation. Not for me. Successful at producing an FF image maybe ... good, not so much to my taste.
p.36 #5 · Official: Sony A7 and A7R Fullframe Mirrorless
artur5 wrote:
I see no reason why a good helicoid adapter should be more problematic than the focusing ring of the lens itself.. After all, people has been using Hawks adapters on the NEX-7, which has higher pixel density than the 36Mp of the A7r.
the helicoid in the lens is a much better and more solidly reinforced one. you can't fit a really well built helicoid in an adapter that small (well not cheaply). both my hawk's helicoid adapter and my cheaper helicoid adapter have some wobble in the helicoid. also, corners are noticeably assymetrical on the cheap one (haven't checked to closely on the hawks, but it looks better). the weight of the lens on the helicoid is bound to cause a little shift in the helicoid. it's just a question of whether it's enough to be noticeable.
p.36 #6 · Official: Sony A7 and A7R Fullframe Mirrorless
sebboh wrote:
the helicoid in the lens is a much better and more solidly reinforced one. you can't fit a really well built helicoid in an adapter that small (well not cheaply). both my hawk's helicoid adapter and my cheaper helicoid adapter have some wobble in the helicoid. also, corners are noticeably assymetrical on the cheap one (haven't checked to closely on the hawks, but it looks better). the weight of the lens on the helicoid is bound to cause a little shift in the helicoid. it's just a question of whether it's enough to be noticeable.
It's also a question of what lens are you mounting. I use my Hawk's mainly on a CV15, which is incredibly light and short. I don't really see any flex at all in the adapter.
p.36 #7 · Official: Sony A7 and A7R Fullframe Mirrorless
I'm curious about how some of these helicoid adapters handle full frame.
I see in some pictures the helicoid extends to the bottom of the interior throat of the adapter. This looks like it reduces the radius (all the way to the bottom) and may block some light hitting the corners.
p.36 #8 · Official: Sony A7 and A7R Fullframe Mirrorless
Matt Grum wrote:
I imagine all they're doing is using a different point spread function for each aperture to drive a deconvolution algorithm. There really isn't much else you can do to reverse the effects of diffraction. But provided noise is low, deconvolution can work very well.
Deconvolution sharpening on 36MP data in camera? Is the processor really capable of that?
p.36 #9 · Official: Sony A7 and A7R Fullframe Mirrorless
Mirek Elsner wrote:
Deconvolution sharpening on 36MP data in camera? Is the processor really capable of that?
I think there is none of that. Sony is simply using the same jpg sharpening settings for both A7 and A7R. In fact AA less bodies require no sharpening. I know that from my M9 files. A tiny bit of sharpening especially with sharp lenses produces very ugly results.
p.36 #10 · Official: Sony A7 and A7R Fullframe Mirrorless
alwang wrote:
It's also a question of what lens are you mounting. I use my Hawk's mainly on a CV15, which is incredibly light and short. I don't really see any flex at all in the adapter.
true, it's certainly possible with light lenses that it can be well aligned enough. the helicoid just adds a few extra sources of alignment errors to an adapter that already doubles them so the risk of misalignment goes up (and thus tolerances need to be increased to maintain the same chance of misalignment).
that said, i'm really liking the look of the new voigtlander adapter....
p.36 #12 · Official: Sony A7 and A7R Fullframe Mirrorless
I had issues with infinity focus on my copy of the Hawk's, but it was an early copy. It would allow focus past infinity with lenses I know from the GXR focus perfectly at the infinity stop. This may be intentional for the design but I'd prefer to retain the infinity stop capability of course. Do current shipping Hawk's have issues here?
Will the voigtlander be different?
It certainly is finished nicer than my Hawk's was.
I loved gaining close focus ability. Would definitely buy one or the other again for the A7r.
p.36 #14 · Official: Sony A7 and A7R Fullframe Mirrorless
I had the Hawk adapter for a while. It was fun but none of my 35mm lenses was that good at short distances. If I buy into the new susyem I'll just stick to the Metabone standard adapter.
p.36 #17 · Official: Sony A7 and A7R Fullframe Mirrorless
Notice at the end where they talk about how the Sony 10-18mm covers the a7R down to 12mm
"Really interesting was that the Sony 10-18mm F4 for APS-C E-mount cameras COVERED the full frame sensor at 12mm. At the corners it isn’t perfect but this will be a unique lens on the A7R.
Shot at close range at 12mm on the A7 in full frame mode -"
p.36 #19 · Official: Sony A7 and A7R Fullframe Mirrorless
rji2goleez wrote:
Notice at the end where they talk about how the Sony 10-18mm covers the a7R down to 12mm
"Really interesting was that the Sony 10-18mm F4 for APS-C E-mount cameras COVERED the full frame sensor at 12mm. At the corners it isn’t perfect but this will be a unique lens on the A7R.
Shot at close range at 12mm on the A7 in full frame mode -"
Yep, seems this is amazing non-expensive UWA lens for a7/r. Maybe the 15...18 range without any visible issues.
Opps... Just found on the sar website: "SEL1018 can be used at Focal Length 13-15mm but at it is optimal at 14mm with very subtle vignette at all aperture. At 10-12mm & 16-18mm you will need to crop the very heavy vignette off (actually it requires the crop or turn on the auto crop)"
Seems need to use the black sticker tape and modify it to uwa prime 14mm )
p.36 #20 · Official: Sony A7 and A7R Fullframe Mirrorless
jaehoppa wrote:
Here is the official review of the A7 in a Korean forum.
A7r review in process they say.
They are giving out an A7 for the best comment!!
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