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 02, 2014 at 07:59 PM
hwoarang5 Offline • [X]
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 ...
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.
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
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.
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.
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.
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.
p.5 #14 · Review: Sony A7R teams up with Canon glass
I ordered the metabones mark 4 from B&H for my A7r and the TS-E-24II.
The first one I received mounted so tight on my 24-105 and 40mm pancake I asked for a return.
When I received the second it was worse than the first. After putting it on and off several different lenses multiple times - it got to the point where it was a little bit easier, but under no condition would I recommend you attach the adapter to the camera before attaching the lens as you might damage your camera.
In no way does this adpater's lens attachment mount appear to be well made or similar to any other adapter I have used.
p.5 #16 · Review: Sony A7R teams up with Canon glass
DmitriM wrote:
How's the camera at low ISO levels compared to 5d3?
Definitely not worse - what I really like is that you can select from more low ISO numbers on the A7(R) - ISO 50, 64, 80, 100 for example. Ideal for long exposure shooting.
p.5 #17 · Review: Sony A7R teams up with Canon glass
DmitriM wrote:
How's the camera at low ISO levels compared to 5d3?
They both are great. I'm sure you could run tests or find them already done with a google search. But it won't matter in the end....
What you'll notice is the increased resolution of the A7r and how much you can, if needed, push the shadows to avoid blending bracketed shots (at times). It is quite nice for landscapes.
p.5 #19 · Review: Sony A7R teams up with Canon glass
Fred, I just picked up the a7r for the "r". Been shooting with the a7s for a while. I'm actually out of Canon bodies now for the first time in years. But still have all my Canon glass. Every day I get better and better and manually focusing, even starting to anticipate action and movement better.
I still prefer the OVF for burst AF daylight erratic movement sports shooting, but that's about the only time. Need to go shoot a billion shots today and teach myself this a7r.
p.5 #20 · Review: Sony A7R teams up with Canon glass
Shield wrote:
Fred, I just picked up the a7r for the "r". Been shooting with the a7s for a while. I'm actually out of Canon bodies now for the first time in years. But still have all my Canon glass. Every day I get better and better and manually focusing, even starting to anticipate action and movement better.
I still prefer the OVF for burst AF daylight erratic movement sports shooting, but that's about the only time. Need to go shoot a billion shots today and teach myself this a7r.
You mention manually focusing, I thought Fred said he had autofocus with his adapter. Sorry to be dense, but is it manual focus or auto focus with the a7r + adapter + canon lens? Thanks!
