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Archive 2013 · A7/A7r - performance with WA RF lenses

  
 
zhangyue
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p.14 #1 · A7/A7r - performance with WA RF lenses


Ron, thanks for your info. Long time no see your work Hope A7r will be better. At least, I hope Leica 21-35R can still work with it


Oct 19, 2013 at 02:00 AM
pocketmon
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p.14 #2 · A7/A7r - performance with WA RF lenses



The result of G28 on A7 and A7r is BAD, for me.

Check the image in the following link. It was said to be G28 with A7r.

http://forum.xitek.com/thread-1222946-2-1-1.html



Oct 19, 2013 at 02:02 AM
charles.K
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p.14 #3 · A7/A7r - performance with WA RF lenses


Ron, yes would love to hear/see your perspective with the A7r!
Michael, I still feel the RX1 and more so the RX1R will be better than the A7 35/2.8 combo. A7r will be very interesting!!



Oct 19, 2013 at 02:06 AM
rscheffler
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p.14 #4 · A7/A7r - performance with WA RF lenses


I was hoping to grab an RX1 from the Sony rep, to compare against the new 35/2.8... unfortunately he already lent his out.

Thanks Michael... I've been lurking. Busy with work, life, etc... though have also been rationing my time online. Definitely still shooting the M9.



Oct 19, 2013 at 02:10 AM
zhangyue
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p.14 #5 · A7/A7r - performance with WA RF lenses


rscheffler wrote:
though have also been rationing my time online. Definitely still shooting the M9.

I take that as a good suggestion I need shoot more than gear talk and surf around here.



Oct 19, 2013 at 02:13 AM
_julian_
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p.14 #6 · A7/A7r - performance with WA RF lenses


pocketmon wrote:
The result of G28 on A7 and A7r is BAD, for me.

Check the image in the following link. It was said to be G28 with A7r.

http://forum.xitek.com/thread-1222946-2-1-1.html


Do you mean this one?

http://cloud.xitek.net/forum/pics/201310/2336/233622/233622_1382156647.jpg

Why is it bad, because of the color shift or because it's not sharp?

Are you a member of that board and would it be possible to ask for the original size examples to be uploaded somewhere?



Oct 19, 2013 at 02:31 AM
edwardkaraa
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p.14 #7 · A7/A7r - performance with WA RF lenses


Ron, good to see you back here and definitely looking forward to read your comments on the A7 and RF lenses.

Cheers!
Edward



Oct 19, 2013 at 02:44 AM
pocketmon
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p.14 #8 · A7/A7r - performance with WA RF lenses


_julian_ wrote:
Do you mean this one?

http://cloud.xitek.net/forum/pics/201310/2336/233622/233622_1382156647.jpg

Why is it bad, because of the color shift or because it's not sharp?

Are you a member of that board and would it be possible to ask for the original size examples to be uploaded somewhere?


The color shift is not acceptable for me.

I am not a member of that board. Sorry, I can't help.



Oct 19, 2013 at 02:46 AM
michaelwatkins
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p.14 #9 · A7/A7r - performance with WA RF lenses


rscheffler wrote:
Busy with work, life, etc... though have also been rationing my time online.


Me too. It took the A7 cameras to cause me to pop back in here, my first comments here since the spring.

I might still be interested in the A7r even if it doesn't handle certain WA RF lenses well, but obviously I'd rather it did well in that area and thus be more useful.

If not, I'm going back to lurking.

Still shooting the GXR on occasion but mostly the D800 these days. My youngest son has taken over the GXR and as his enthusiasm for photography continues to build, I'm happy to let him have at it. I do miss having a compact image maker all to myself though!



Oct 19, 2013 at 03:04 AM
edwardkaraa
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p.14 #10 · A7/A7r - performance with WA RF lenses


I think it's interesting that someone earlier made a remark about the difficulty of focusing manually with peaking. Indeed I went back to my GXR files and there is definitely a high percentage of missed focus shots, some of them really critical. So I'm a bit unconvinced about the usefulness of such cameras with RF lenses unless one has the time to use image magnification for critical focus. I think the best way to go is with native FE lenses, Which by the way are superb, perhaps using RF and other alternative glass as a fill gap until more focal ranges are introduced.


Oct 19, 2013 at 03:16 AM
michaelwatkins
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p.14 #11 · A7/A7r - performance with WA RF lenses


Edward, certainly no matter how proficient I was, or wasn't, with manual focus lenses and focus peaking on the NEX or GXR, spending most of the last year with the D800 convinced me of the same.

Now that Sony has in effect guaranteed the longevity of the E mount, I'm less concerned about vendor lock in and the breadth of available optics. High quality lenses should naturally follow from Sony and others -- assuming of course the market for a higher end FF ILSC remains robust enough for Sony. I think it will - if they cannibalize DSLT and NEX APS-C sales to some degree, so be it.

Bring on the FE image examples. Please!



Oct 19, 2013 at 04:00 AM
BenM
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p.14 #12 · A7/A7r - performance with WA RF lenses


I agree with you both. I find that to ensure I have critical focus on what I want, I have to use the focus zoom functionality on my NEX 7. Focus peaking isn't accurate enough.


Oct 19, 2013 at 04:31 AM
philber
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p.14 #13 · A7/A7r - performance with WA RF lenses


And, since FF has less DOF than APS-C, focusing only with peaking is even less likely to be adequate on the A7.


Oct 19, 2013 at 04:46 AM
BenM
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p.14 #14 · A7/A7r - performance with WA RF lenses


Yeah it's already tough with my CV35 1.2 wide open.

Having said that with a bit of fore thought I can set my depth of field up front if I'm planning on shooting a moving target like my kids and get a pretty decent number of keepers.



Oct 19, 2013 at 04:54 AM
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p.14 #15 · A7/A7r - performance with WA RF lenses


Great sample, seems I am do not planning any WA RF lenses for future


Oct 19, 2013 at 05:09 AM
mcbroomf
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p.14 #16 · A7/A7r - performance with WA RF lenses


It's been mentioned here several times that the ZM 21/2.8 is a bad performer on the Nex 7 and 5N. Anyone know how the 21/4.5 fares?

Thx

Mike



Oct 19, 2013 at 05:09 AM
Jochenb
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p.14 #17 · A7/A7r - performance with WA RF lenses


Thanks for the report Ron. Sad to hear that the 21SEM isn't working great on it, because that's a fantastic lens. I'm looking forward to seeing results from it on the A7R.


Oct 19, 2013 at 05:19 AM
wfrank
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p.14 #18 · A7/A7r - performance with WA RF lenses


Talking about 21's, this is from pocketmons link on page 13: http://forum.xitek.com/thread-1222940-1-1-2.html

A7r with Contax G 21/2.8. Looks like no major improvement over the NEX 5N, but a little better with regards to corner smearing. That comparison is a bit unfair as the A7r uses a larger part of the image circle than an APS-C sensor.

Not that it is very interesting but if you crop out a APS-C coverage out of the FF image it looks like it could be significantly better than the 5N.



EDIT: Google translation error - bad images. not taken with A7r




Edited on Oct 19, 2013 at 05:52 AM · View previous versions



Oct 19, 2013 at 05:33 AM
philber
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p.14 #19 · A7/A7r - performance with WA RF lenses


No major improvement over 5N still suggests that ZM 18 and Elmar 24, both clean on 5N, but not on 7, could be clean on A7r. That would be sweet indeed!


Oct 19, 2013 at 05:37 AM
Nanh
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p.14 #20 · A7/A7r - performance with WA RF lenses


wfrank wrote:
Talking about 21's, this is from pocketmons link on page 13: http://forum.xitek.com/thread-1222940-1-1-2.html

A7r with Contax G 21/2.8. Looks like no major improvement over the NEX 5N, but a little better with regards to corner smearing. That comparison is a bit unfair as the A7r uses a larger part of the image circle than an APS-C sensor.

Not that it is very interesting but if you crop out a APS-C coverage out of the FF image it looks like it could be significantly better than the 5N.

(A7r+Contax G 21/2.8)
http://farm8.staticflickr.com/7299/10359215546_00d59cfb23_o.jpg

http://farm3.staticflickr.com/2852/10359214806_3aea915161_o.jpg


This is not the A7R. This is Nex-7 + G21, which is in fact much worse than on the 5N.



Oct 19, 2013 at 05:48 AM
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