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Review: Sony A7R teams up with Canon glass
  
 
eric hagemann
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p.5 #1 · Review: Sony A7R teams up with Canon glass


Fred,
My Bad - here is the link

http://scottreither.com/blogwp/2012/07/01/nikon-d800-e-long-exposure-issues-problems-2/




Feb 01, 2014 at 08:34 PM
David Baldwin
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p.5 #2 · Review: Sony A7R teams up with Canon glass


Eric, thanks for that link. As a specialist night photographer reading what Scott wrote made me very grateful I'm still using my 5D2.


Feb 02, 2014 at 08:58 AM
krickett
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p.5 #3 · Review: Sony A7R teams up with Canon glass


FWIW, I take long exposures 30s+ all the time (D800... not E), and I've never encountered this issue.

I just set up and took a quick 60s shot of my bedroom door (haha) and wasn't able to see any problems.

EDIT: I guess i should have read it more thoroughly. His problem was that he didn't shut the viewfinder shutter (that was what I actually suspected initially, haha), and he figured that part out.

I'll test for the white spots later. For little white noise, I don't think the problem is unique to Nikon. Most DSLR's have long exposure noise reduction for this purpose, and you just have to decide whether or not you want to deal with it. The bright hot spots are a concern though, and I'll look for those.



Feb 03, 2014 at 12:59 AM
hwoarang5
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p.5 #4 · Review: Sony A7R teams up with Canon glass


anyone tested magic lantern dual_iso module mode with markIII?, i like to see a shoot out with that on this sony and d800 on DR and noise ...

http://www.canonrumors.com/2014/01/magic-lantern-increases-canon-5d-iii-dynamic-range/



Feb 04, 2014 at 05:06 AM
alundeb
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p.5 #5 · Review: Sony A7R teams up with Canon glass


eric hagemann wrote:
Fred,
My Bad - here is the link

http://scottreither.com/blogwp/2012/07/01/nikon-d800-e-long-exposure-issues-problems-2/



Thanks for the link.

It is hard to take his "issues" seriously.

First, he didn't know that he had to close the viewfinder when using ND filters. Light leak through the VF is a problem also with Canon cameras.

Finally, he refuses to use in-camera NR of long exposures. Good luck finding a camera that does not show hot pixles with long exposures without black frame subtraction.



Feb 04, 2014 at 07:35 AM
Fred Miranda
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p.5 #6 · Review: Sony A7R teams up with Canon glass


alundeb wrote:
Thanks for the link.

It is hard to take his "issues" seriously.

First, he didn't know that he had to close the viewfinder when using ND filters. Light leak through the VF is a problem also with Canon cameras.

Finally, he refuses to use in-camera NR of long exposures. Good luck finding a camera that does not show hot pixles with long exposures without black frame subtraction.


I have been testing the A7R with the Astrotrac. I will update the review with my findings.
Fred



Mar 10, 2014 at 09:01 PM
wmqiadm1
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p.5 #7 · Review: Sony A7R teams up with Canon glass


gr8



Apr 04, 2014 at 10:25 PM
 

Search in Used Dept. 



J.D.
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p.5 #8 · Review: Sony A7R teams up with Canon glass




Hey, isn't that Sean O'Connell?

I thought he only shot film.



May 13, 2014 at 04:21 AM
Wildcats_Fans
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p.5 #9 · Review: Sony A7R teams up with Canon glass


Excellent review



May 28, 2014 at 03:23 PM
dgdg
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p.5 #10 · Review: Sony A7R teams up with Canon glass


Fred Miranda wrote:
I have been testing the A7R with the Astrotrac. I will update the review with my findings.
Fred


I read elsewhere that live view focusing on stars is more difficult than a canon full frame. That's just one person's opinion. Would like to see more test this out.

DAvid



May 28, 2014 at 03:56 PM
retrofocus
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p.5 #11 · Review: Sony A7R teams up with Canon glass


dgdg wrote:
I read elsewhere that live view focusing on stars is more difficult than a canon full frame. That's just one person's opinion. Would like to see more test this out.

DAvid


I recently did night photography both with my 5D MkII and the Sony A7R (with 14/2.8 II lens). Precise manual focusing in the dark with the A7R was much easier through the EVF.



May 28, 2014 at 04:46 PM
secondclaw
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p.5 #12 · Review: Sony A7R teams up with Canon glass


I went out for meteor shower shooting with A7R - it's not any more difficult to focus than Canon. Besides, I just set the lens to infinity. I did see potentially more chromatic aberrations around each star, but I haven't finished reviewing all the samples to make much of a conclusion.

In the photo below, a lot of stars appear blue, as I haven't had a chance to correct chromatic abberations around them. But, I really liked the result. With 5D2 I may get the Milky Way band, but not the colors.







May 29, 2014 at 04:48 PM
dgdg
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p.5 #13 · Review: Sony A7R teams up with Canon glass


That's a nice shot Claw. You have to find some darker skies away from civilization.

Your meteor shot looks like mine! Haha. I took images for 2 hours hoping to stack a composite and see the radiant. Well, it was still a good night out nonetheless.

Only my voigtlander 20mm had a hard infinity focus. Everything else needs precise focusing with live view, then I put gaffer tape on the focus ring.

I didn't have the 5D2 for very long, but the 5D3 probably is similar and gives great milky way colors. The initial shots don't look like much, but you have all the data there to bring it out in post.

David




May 29, 2014 at 06:38 PM
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