cpc Posted August 20, 2014 Share #61 Posted August 20, 2014 Advertisement (gone after registration) Here's a comparison between the ZM 35 f2.8 and the FE 35 f2.8. All shots wide open and with ZM shots first. Are you sure the last image is from the FE? It looks significantly softer in the corners compared to the image above it. Link to post Share on other sites More sharing options...
Advertisement Posted August 20, 2014 Posted August 20, 2014 Hi cpc, Take a look here Any Sony A7s Shooters in the House?. I'm sure you'll find what you were looking for!
Fairkid Posted August 20, 2014 Share #62 Posted August 20, 2014 I'm not at my desk so can't check but I think you might be right judging by the sequence of the file numbers. Apologies. Link to post Share on other sites More sharing options...
cpc Posted August 20, 2014 Share #63 Posted August 20, 2014 No worries. Just wanted to make sure. I'm still on the fence with 35mm lenses. I wish the FE had a proper distance scale. Link to post Share on other sites More sharing options...
jmahto Posted August 21, 2014 Share #64 Posted August 21, 2014 Finally another scene with the 28 Summicron first at f2.0 and then at f8.0. Again Leica first then Sony. I see edge blurriness with Sony at f/2 compared to Leica. Look at the vertical bars on left side. Its visible on this small web size pic. Pixel peeping (or enlarged printing) will show worse. Does it mean that A7s doesn't play well with Summicron wide open (I ask because I love this lens on M9)? I guess Nick said he doesn't see any issue in his review !! Or is it your adaptor? Link to post Share on other sites More sharing options...
Fairkid Posted August 21, 2014 Share #65 Posted August 21, 2014 In my experience the summicron is better on the M9 at the edges until f8 where the Sony catches up. I wouldn't hesitate to use it at wider apertures on the A7s though but there is a difference. I didn't use it at all on the A7 because of issues so there is a definite improvement with this camera. So far have just used the Novaflex adapter but I have a couple of others I can try including a close focussing one. Link to post Share on other sites More sharing options...
jmahto Posted August 21, 2014 Share #66 Posted August 21, 2014 In my experience the summicron is better on the M9 at the edges until f8 where the Sony catches up. I wouldn't hesitate to use it at wider apertures on the A7s though but there is a difference. I didn't use it at all on the A7 because of issues so there is a definite improvement with this camera. So far have just used the Novaflex adapter but I have a couple of others I can try including a close focussing one. Would you mind providing the full size of these shots (preferably raw) so that I can compare? You can put them in dropbox and PM me the link. Link to post Share on other sites More sharing options...
Fairkid Posted August 21, 2014 Share #67 Posted August 21, 2014 Advertisement (gone after registration) Sure, no problem, I'll send you a link once they've uploaded. Here are some shots with a different adapter, it's the cardany_chan close focussing adapter. F2.0 through to F8.0 Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/231833-any-sony-a7s-shooters-in-the-house/?do=findComment&comment=2653669'>More sharing options...
jmahto Posted August 21, 2014 Share #68 Posted August 21, 2014 Sure, no problem, I'll send you a link once they've uploaded. Here are some shots with a different adapter, it's the cardany_chan close focussing adapter. F2.0 through to F8.0 Thanks for sharing. What is the focus point? It is difficult to judge in closer 3D objects. Assuming focus is on the topmost part of the roof, it looks better after f/2.8. But again this is web sized sample. Link to post Share on other sites More sharing options...
gyoung Posted August 21, 2014 Share #69 Posted August 21, 2014 Are any of you using the sony lens correction app for these on the A7s? Over on the other thread polygamer reckoned that using this app on the A7 made the 15 heliar and 21/2.8 asph work ok when stopped down, although for some reason the 35/2 asph didnt do so well. Do you think the larger pixels on the A7s make for sharper corners with the wide angles, or does it just mean less correction for light falloff and colour shading. Sorry for all the questions, but I am using the nex 6 fairly happily with these lenses, and I am trying to get my head round whether it would be better to go for the A7s, or the A7 and acquire lenses that work better with the 24mp sensor. Gerry Link to post Share on other sites More sharing options...
cpc Posted August 21, 2014 Share #70 Posted August 21, 2014 Are any of you using the sony lens correction app for these on the A7s?Over on the other thread polygamer reckoned that using this app on the A7 made the 15 heliar and 21/2.8 asph work ok when stopped down, although for some reason the 35/2 asph didnt do so well. Do you think the larger pixels on the A7s make for sharper corners with the wide angles, or does it just mean less correction for light falloff and colour shading. Sorry for all the questions, but I am using the nex 6 fairly happily with these lenses, and I am trying to get my head round whether it would be better to go for the A7s, or the A7 and acquire lenses that work better with the 24mp sensor. Gerry I have both Nex-6 and A7s. My wide RF lenses are significantly better on the Nex-6 at the borders. No surprise, when you take into account the sensor size. Depending on what you shoot the additional smearing with the A7s may or may not be a problem. You gain FOV at least. Link to post Share on other sites More sharing options...
jmahto Posted August 21, 2014 Share #71 Posted August 21, 2014 I have both Nex-6 and A7s. My wide RF lenses are significantly better on the Nex-6 at the borders. No surprise, when you take into account the sensor size. Depending on what you shoot the additional smearing with the A7s may or may not be a problem. You gain FOV at least. Thanks. I have NEX6 and I am happy with CV15 and 28cron stopped down. If extra FOV of A7s is still smearing the corners (similar to A7 or A7r, from what I read) then it is better to use A7s with native lenses only. I will continue to use NEX-6 happily. I don't have a need for ultra high ISO at this time. Link to post Share on other sites More sharing options...
Fairkid Posted August 21, 2014 Share #72 Posted August 21, 2014 Thanks for sharing. What is the focus point? It is difficult to judge in closer 3D objects. Assuming focus is on the topmost part of the roof, it looks better after f/2.8. But again this is web sized sample. Yes, focus was on the ridge-line of the roof. Link to post Share on other sites More sharing options...
jmahto Posted August 21, 2014 Share #73 Posted August 21, 2014 Are any of you using the sony lens correction app for these on the A7s?Over on the other thread polygamer reckoned that using this app on the A7 made the 15 heliar and 21/2.8 asph work ok when stopped down, although for some reason the 35/2 asph didnt do so well. Do you think the larger pixels on the A7s make for sharper corners with the wide angles, or does it just mean less correction for light falloff and colour shading. Sorry for all the questions, but I am using the nex 6 fairly happily with these lenses, and I am trying to get my head round whether it would be better to go for the A7s, or the A7 and acquire lenses that work better with the 24mp sensor. Gerry From what I have read so far, lens correction app can't correct smearing. It can correct light fall off, distortion and colors only, which is possibly in PP as well. I use LR's flat field correction for CV15 (on NEX6 and M9) and it is one click operation in my workflow. If you are a jpeg shooter then you will need it in camera but it won't help in smearing. I can't see how one can reconstruct lost information in the pixels. Link to post Share on other sites More sharing options...
cpc Posted August 21, 2014 Share #74 Posted August 21, 2014 Thanks. I have NEX6 and I am happy with CV15 and 28cron stopped down. If extra FOV of A7s is still smearing the corners (similar to A7 or A7r, from what I read) then it is better to use A7s with native lenses only. I will continue to use NEX-6 happily. I don't have a need for ultra high ISO at this time. From my experience, wide lenses on the A7s never achieve the level of corner decency one can get on the Nex-6 by stopping down. For demonstration, here is a 100% crop of top left corner at f11 with the Color Skopar 25/4 on the A7s. This is focused for center at infinity. Link to post Share on other sites More sharing options...
jmahto Posted August 21, 2014 Share #75 Posted August 21, 2014 From my experience, wide lenses on the A7s never achieve the level of corner decency one can get on the Nex-6 by stopping down.For demonstration, here is a 100% crop of top left corner at f11 with the Color Skopar 25/4 on the A7s. This is focused for center at infinity. Certainly cropping to smaller sensor size helps in NEX6. Based on these results, I don't understand why some folks are saying that A7s is better suited to wide RF lenses (compared to A7 and A7r). From what I see, it is a great cam for low light video and low light stills with native lenses but not with wide RF lenses. Link to post Share on other sites More sharing options...
cpc Posted August 21, 2014 Share #76 Posted August 21, 2014 Certainly cropping to smaller sensor size helps in NEX6. Based on these results, I don't understand why some folks are saying that A7s is better suited to wide RF lenses (compared to A7 and A7r). From what I see, it is a great cam for low light video and low light stills with native lenses but not with wide RF lenses. It is better in the sense that it seems to color vignette significantly less. If you look closely in the sample above, you can see the cyan vignette, but it is significantly weaker as a color shift than the purple vignette on the a7/a7r. It also seems that the vignetting effect is weaker with the a7s in terms of actual light loss. As for smearing, I don't think there is much difference. Possibly the a7s is a little bit better, but not an easily noticeable step in this regard. Maybe the fact that a7r has more pixels than A7 which has more pixels than a7s leads to the perception that A7r smears more than a7 which smears more than a7s, because the actual smear occupies more physical pixels when examined at 100%. It would be interesting to see resizes to the same size from all the cameras in the series though. Link to post Share on other sites More sharing options...
jmahto Posted August 21, 2014 Share #77 Posted August 21, 2014 That makes sense. Link to post Share on other sites More sharing options...
jankap Posted August 22, 2014 Share #78 Posted August 22, 2014 The picture is at f/11!!! From an f/4 lens! Jan Link to post Share on other sites More sharing options...
cpc Posted August 22, 2014 Share #79 Posted August 22, 2014 The picture is at f/11!!! From an f/4 lens!Jan Yeah, the f4 test of the same setup is dangerous; it can kill you with its smeared corner mess just by looking at it. Link to post Share on other sites More sharing options...
a.j.z Posted August 22, 2014 Share #80 Posted August 22, 2014 From my experience, wide lenses on the A7s never achieve the level of corner decency one can get on the Nex-6 by stopping down.For demonstration, here is a 100% crop of top left corner at f11 with the Color Skopar 25/4 on the A7s. This is focused for center at infinity. Thanks! would be interesting to see the same crop from an M/M9 Link to post Share on other sites More sharing options...
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