Home · Register · Software · Software · Join Upload & Sell

Moderated by: Fred Miranda
Username  

  New fredmiranda.com Mobile Site
  New Feature: SMS Notification alert
  New Feature: Buy & Sell Watchlist
  

FM Forums | Sony Forum | Join Upload & Sell

1       2       3              33      
34
       35              53       54       end
  

Archive 2015 · A thinner sensor stack may be possible after all!
  
 
charles.K
Offline
• • • • •
Upload & Sell: On
p.34 #1 · p.34 #1 · A thinner sensor stack may be possible after all!


Hiep, thank you very much for all your testing I have noticed that the AWB tends to magenta marginally depending on which lens, but this is easily compensated for.

Your test with the FE 55 is quite improved IMO with the modification. I love the FE 55 on the A7s as you can AF in moonlight and rendering combination is just great. I notice from your shots that there substantially added clarity and tonality in the cloud structure with the A7sMod.

Shots this morning, thunderstorms and rain. The changing lighting is very flat and moody. The detail with the 90 Cron AA @ f/5.6 is excellent on the edges now

A7r Mod 90 Cron AA with VM-E











Edited on Mar 21, 2015 at 05:12 AM · View previous versions



Mar 21, 2015 at 01:14 AM
JaKo
Offline
• • •
Upload & Sell: Off
p.34 #2 · p.34 #2 · A thinner sensor stack may be possible after all!


Great test Hiep; appreciated!



Too rainy to test outside, but here is one with my new replacement for Zeiss Distagon 2.8/21
http://www.kozera.ca/photos/images/_DSC7962_1600.jpg



Mar 21, 2015 at 04:25 AM
Taylor Sherman
Offline
• • •
Upload & Sell: Off
p.34 #3 · p.34 #3 · A thinner sensor stack may be possible after all!


Heyyy! Congrats!


Mar 21, 2015 at 04:36 AM
JaKo
Offline
• • •
Upload & Sell: Off
p.34 #4 · p.34 #4 · A thinner sensor stack may be possible after all!


^^^ Thanks!
Actually, some of your samples on Flickr convinced me to get it (the one from Museum of History & Industry)


Did you have have a chance to use SEP 21 on modified A7?



Mar 21, 2015 at 04:52 AM
Taylor Sherman
Offline
• • •
Upload & Sell: Off
p.34 #5 · p.34 #5 · A thinner sensor stack may be possible after all!


Aha! Sorry ;-) It's definitely a great lens. I have generally taken the attitude of "what camera do I have to buy to get the most out of that lens?" and it almost got me to buying a Leica, until the Kolari mod, and for now I'm satisfied.

I've used it a bunch once I got my A7 back, here are the three albums that feature it quite a bit:

https://www.flickr.com/photos/taylorsherman/sets/72157650424292047/
https://www.flickr.com/photos/taylorsherman/sets/72157651079975332/
https://www.flickr.com/photos/taylorsherman/sets/72157651217392022/

Here are a few examples:


DSC08782.jpg by Taylor Sherman, on Flickr


DSC08385.jpg by Taylor Sherman, on Flickr


DSC08731.jpg by Taylor Sherman, on Flickr


DSC08661.jpg by Taylor Sherman, on Flickr



Mar 21, 2015 at 05:08 AM
Taylor Sherman
Offline
• • •
Upload & Sell: Off
p.34 #6 · p.34 #6 · A thinner sensor stack may be possible after all!


I'll have to go re-take that shot of the MOHAI with the new camera - I like the picture a lot too, but it definitely is pretty iffy out near the edges.



Mar 21, 2015 at 05:10 AM
JaKo
Offline
• • •
Upload & Sell: Off
p.34 #7 · p.34 #7 · A thinner sensor stack may be possible after all!


Great samples - thank you!
BTW, what M --> E adapter did you use?



Mar 21, 2015 at 05:21 AM
rscheffler
Offline
• • • • •
Upload & Sell: Off
p.34 #8 · p.34 #8 · A thinner sensor stack may be possible after all!


JaKo wrote:
Too rainy to test outside, but here is one with my new replacement for Zeiss Distagon 2.8/21


Congrats! I'm sure you'll love its image quality, let alone the much smaller size. It's one Leica lens that seems to have some Zeiss in its rendering. Have you guys noticed much color shift with it on the various a7 cameras? (This was probably discussed already, so sorry for asking again, if it's indeed the case.)

It's also interesting to see your progression through various lenses over the past year or so...

Charles - interesting to know that the 90AA also benefits from some improvement.



Mar 21, 2015 at 06:02 AM
charles.K
Offline
• • • • •
Upload & Sell: On
p.34 #9 · p.34 #9 · A thinner sensor stack may be possible after all!


Congrats Jako!!! Awesome lens, and I am now very sorry that I sold mine only a few months ago
Taylor, excellent set of shots.
Ron, there is a minor color shift towards magenta overall, but this is easily compensated for. Also with the A7r M there is much less purple fringing/CA and I do a calibration shot at wide open and f/8 at infinity for the WATE, 24 Lux, 28 Elmarit V3 and 35 Lux FLE and just use the Adobe FF, and import all my shots as DNG files now. I only do these calibration shots once. Most of the time I don't need to use the Adobe FF, except for the 28 Elmarit V3.



Mar 21, 2015 at 06:33 AM
nicoimages
Offline
• •
Upload & Sell: Off
p.34 #10 · p.34 #10 · A thinner sensor stack may be possible after all!


Sony A7R with KolariVision mod and Minolta M-Rokkor 28/2.8 all at f8

Ron - I used to own the Leica Super Elmar 21/3.4 and when I tried it on the A7R before the modification there was almost no colour shift. I was very unlucky with mine as I had two de-centred copies from Leica which just did not work right on the Leica M240 and Leica did not manage to correct the problem. I ended up buying the Voigtlander 21/1.8 which was perfect out of the box however I am very tempted of trying another copy of the Leica 21/3.4 as I like the lower weight and the fact that you can fit Grad filters to it.

Hiep - great tests I have tried your method of focusing in the corners and was amazed that I did no longer have to stop down so much to get the same level of sharpness.

I usually use auto white balance and have not noticed any significant change in white balance accuracy or exposure after the modification - as I always shoot raw this is not an issue at all for me.

I was asked on flickr how I process my images - the workflow below applies to the first image in the series

1. shoot raw and low iso
2. always use a good lens, take extra care when focusing, stop down sufficiently and apply distortion, chromatic aberration and fringe corrections in Lightroom before any processing takes place
3. for this particular set of images I initially applied a custom colour profile which was a tweaked version of VSCO 6 Porta 160
4. corrected verticals and distortion in Lightroom
5. exported to Photoshop and using the clone tool and spot healing tool "cleaned" up the building
6. opened up in color efex 4 and applied the "Pro Contrast Filter" and then the "Contrast" filter with "soft contrast" only applied
6. up-sized the image slightly and applied my own custom sharpening action in photoshop
7. exported back into lightroom where I corrected colour slightly and tweaked the curves and added a vignette
8. the light is really important to get this effect - this image was taken around 45min before sunset when the sun was very low and illuminating the building from an angle

http://farm8.staticflickr.com/7603/16669645027_b0ad62fb62_h.jpg

http://farm8.staticflickr.com/7624/16884631985_47c2d07309_h.jpg

http://farm8.staticflickr.com/7610/16877067665_79f623f233_h.jpg

http://farm9.staticflickr.com/8710/16877258445_0764be88d3_h.jpg

Edited on Mar 21, 2015 at 06:21 PM · View previous versions



Mar 21, 2015 at 11:06 AM
 

Search in Used Dept. 

        


xbarcelo
Offline
• • •
Upload & Sell: Off
p.34 #11 · p.34 #11 · A thinner sensor stack may be possible after all!


Hiep, thanks so much for these tests. They're very convincing. I seem to remember that you had a contax g 21. Have you tried it? I also have one and I'm very curious!

Thanks,

Xavier



Mar 21, 2015 at 11:58 AM
charles.K
Offline
• • • • •
Upload & Sell: On
p.34 #12 · p.34 #12 · A thinner sensor stack may be possible after all!


Nicholas, superb set of images!! Thank you for the excellent work flow advice


Mar 21, 2015 at 01:26 PM
hiepphotog
Offline
• • • •
Upload & Sell: Off
p.34 #13 · p.34 #13 · A thinner sensor stack may be possible after all!


Nicholas: Glad that it worked out for you. I think I have solved my WB issue. It was so different that it kinda threw me off . Beautiful building shots by the way!

Xavier: I was stopped short twice while setting up for the G 21 and G 28 testing because of raining. I'll sneak one in this morning.



Mar 21, 2015 at 01:34 PM
Taylor Sherman
Offline
• • •
Upload & Sell: Off
p.34 #14 · p.34 #14 · A thinner sensor stack may be possible after all!


JaKo wrote:
Great samples - thank you!
BTW, what M --> E adapter did you use?


Thanks! That's the Fotodiox Pro. After reading about how you can use the lock on the VM-E to set infinity focus though, I just ordered one of those.



Mar 21, 2015 at 02:50 PM
hiepphotog
Offline
• • • •
Upload & Sell: Off
p.34 #15 · p.34 #15 · A thinner sensor stack may be possible after all!


Taylor Sherman wrote:
Thanks! That's the Fotodiox Pro. After reading about how you can use the lock on the VM-E to set infinity focus though, I just ordered one of those.


Taylor, the VM-E can't adjust and set the infinity permanently. Shimming a VM-E just doesn't make sense. I would suggest Hawk's or Phigment's adapter (if you're not interested in helicoid action, or would like EXIF data).



Mar 21, 2015 at 03:25 PM
zhangzp120
Offline

Upload & Sell: Off
p.34 #16 · p.34 #16 · A thinner sensor stack may be possible after all!


Hi Hiep,
Here is my 2 cents. Hologon g16 + a7 (unmod)
These pics were took with my a7 one year ago, jpe without any modification and without the center filter.
I will update some detail measurement of the the lenses soon.

Hope this will help.
I uploaded six, check flickr for large size

Regards


https://farm9.staticflickr.com/8749/16675934667_7da53e8bcb_k_d.jpg

https://flic.kr/p/rpAwoX



Mar 21, 2015 at 03:47 PM
beetlephoto
Offline
• •
Upload & Sell: Off
p.34 #17 · p.34 #17 · A thinner sensor stack may be possible after all!


xbarcelo wrote:
Hiep, thanks so much for these tests. They're very convincing. I seem to remember that you had a contax g 21. Have you tried it? I also have one and I'm very curious!

Thanks,

Xavier


Hello, I have one too and will report when my A7rM arrives



Mar 21, 2015 at 04:02 PM
hiepphotog
Offline
• • • •
Upload & Sell: Off
p.34 #18 · p.34 #18 · A thinner sensor stack may be possible after all!


I think I nailed the WB this round .

Xavier: The Biogon G 21 is a tricky, yet lovely little lens. But I think I finally manage to squeeze the most out of this lens . However, I would like to stretch the importance of getting the infinity focus spot-on. When I did the test this morning, my infinity is a little off and I couldn't manage to get a satisfactory result (to be honest, was thinking of selling the lens). However, being curious and quite in love with this lens, I decided to run the test again with infinity adjustment. My G21 was already converted to M-mount with distance scale by Hawk. Using Hawk's M adapter, I got the exact infinity point.

Since this lens's performance so far has been unknown on digital body, I would like to present here the aperture series taken with this. This lens does require a bit more optimization to make it sing. After trial-and-error, here is what I got:

Center
Left - 2.8, right - 4
https://lh3.googleusercontent.com/-VG2AtzA3IwM/VQ22oqIRIxI/AAAAAAAALh4/_imuWDnzi-w/w1598-h725-no/Center_2_8_4.JPG


Left - 5.6, right - 8
https://lh6.googleusercontent.com/-3gsjAGV3iuM/VQ22o4JZYwI/AAAAAAAALiA/l9Xq7Ajlvig/w1597-h722-no/Center_5_6_8.JPG


Left - 8, right - 11
https://lh4.googleusercontent.com/-lXLI77U9mvo/VQ22odxFRXI/AAAAAAAALiI/P2RU1fiF9OU/w1598-h725-no/Center_8_11.JPG


Corner:
Left - 2.8, right - 4
https://lh6.googleusercontent.com/-ALnj37VKaBE/VQ22piAw-PI/AAAAAAAALiQ/wgQRWEdY7RM/w1598-h727-no/Corner2_8_4.JPG


Left - 5.6, right - 8
https://lh6.googleusercontent.com/-4-IYjZd2II8/VQ22rqFLbMI/AAAAAAAALiY/5EaZuycfIVo/w1597-h725-no/Corner5_6_8.JPG


Left - 8, right - 11

https://lh4.googleusercontent.com/-1Ih6d5ojR8Q/VQ22q1XmTmI/AAAAAAAALig/2N64vSz6HFU/w1598-h724-no/Corner8_11.JPG


So to get extremely sharp corner-to-corner, you need f/11. If you shoot at f/8, you have to deal with that soft extreme corners (about 3% of the entire frame). f/5.6 is okay, but certainly f/2.8 and f/4 are totally garbage for any landscape work (who would shoot a landscape at these apertures anyway). Attached below is the full-res rar:

Contax Biogon G 21 Aperture Series



Mar 21, 2015 at 06:33 PM
xbarcelo
Offline
• • •
Upload & Sell: Off
p.34 #19 · p.34 #19 · A thinner sensor stack may be possible after all!


It seems to be quite acceptable! Actually, it's very nice! I'll have to investigate on the infinity adjustment…


Mar 21, 2015 at 08:24 PM
artur5
Offline
• • •
Upload & Sell: Off
p.34 #20 · p.34 #20 · A thinner sensor stack may be possible after all!


hiepphotog wrote:
I think I nailed the WB this round .

Xavier: The Biogon G 21 is a tricky, yet lovely little lens. But I think I finally manage to squeeze the most out of this lens . However, I would like to stretch the importance of getting the infinity focus spot-on. When I did the test this morning, my infinity is a little off and I couldn't manage to get a satisfactory result (to be honest, was thinking of selling the lens). However, being curious and quite in love with this lens, I decided to run the test again with infinity adjustment.
...Show more
Thanks a lot for the test and just a question. Do you mean that in your first set of shots your results weren't good because the infinity mark of the lens didn't match exactly the real infinity ?.
If that's so, wouldn't be wiser to disregard the lens' scale distance and focus with the viewfinder in magnified view ?. Even on native lenses, you never can entirely trust scale focusing for critical sharpness.

BTW. Xavier, you see that the Biogon G 21 isn't any good on the Sony A7 series, You better sell it cheaply as fast as possible ( to me, for instance .. )




Mar 21, 2015 at 09:23 PM
1       2       3              33      
34
       35              53       54       end






FM Forums | Sony Forum | Join Upload & Sell

1       2       3              33      
34
       35              53       54       end
    
 

You are not logged in. Login or Register

Username     Reset password