p.81 #2 · Sony A7 and A7r Full Frame with Canon Lenses
AGeoJO wrote:
Frankly, the shutter lag value doesn't bother me but the potential shutter vibration at a certain shutter speed range bothers me big time .
I didn't noticed any but see this question raise a lot.
What would be a complete test about this ? If I can help, I will.
p.81 #3 · Sony A7 and A7r Full Frame with Canon Lenses
KiboOst wrote:
I didn't noticed any but see this question raise a lot.
What would be a complete test about this ? If I can help, I will.
Thanks! You need to use a longish lens for that, up to 200mm or so. The questionable shutter speed ranges from around 1/60sec down to maybe 1/4sec. I was supposed to get mine on Friday but for some stupid reasons it got delayed until tomorrow and I am anxious, maybe a tad too anxious to find out .
p.81 #4 · Sony A7 and A7r Full Frame with Canon Lenses
AGeoJO wrote:
Frankly, the shutter lag value doesn't bother me but the potential shutter vibration at a certain shutter speed range bothers me big time .
When seeking the max in sharpness the lack of electronic first curtain may certainly be an issue for those with longer focal length lenses. I would imagine for WA lenses it is much less of an issue. I include a link to an old post of mine showing the impact of electronic first curtain Vs without on a 5DII. Note the improvement of electronic first curtain is greater definition, and even greater pixel density would amplify that difference.
p.81 #5 · Sony A7 and A7r Full Frame with Canon Lenses
From my a7r review :
I did test this several times, with 70-200LII (IS off) on tripod, at 200mm focusing on a small piece full of details. With shutter times of 1/30s, 1/15s, 1/8s, 0.5s, 1sec, I couldn’t discern any vibration there. Gear was mounted with arca plate on the Metabones, on a Markins M20 + Gitzo GT5530S (unweighted).
I didn't do much tests hand held, but it seems anyway you will need fast shutter speed to get full resolution, vibrations or not.
What surprised me also is the absence of diffraction blur on 36mp, did around 100 shots at f/13 with 90tse and no detail loss at all. I ever did noticed this on 1DsII with 90tse, but will have to test with other lenses.
Actually, at least for a tripod shooter, A7R is just amazing ...
p.81 #6 · Sony A7 and A7r Full Frame with Canon Lenses
Hi Mike, thanks for the link. I have to run right now but I will take a look at that later in the afternoon. BTW, yes, I am aware that the A7r doesn't have the electronic 1st shutter curtain. Why Sony didn't incorporate that in the 36MP body is beyond me .
p.81 #8 · Sony A7 and A7r Full Frame with Canon Lenses
Patrick70 wrote:
The A7R seems quite laggy.
From imaging-resource.com tests:
Shutter lag: (using prefocused values)
A7R: 163 ms
6d: 59 ms
5d3: 61 ms
D800: 43 ms
1Dx: 38 ms
That is significantly longer than I thought it would be. I wasn't expecting it to be 1D (40-50ms) but certainly not twice as long as a 5D3 or 5D2 (~70ms). I wasn't planning on using AF with most lenses but when I press the shutter I prefer it to fire straight away, not 1/5 of a second later. It makes a big difference where I plan on using it :/.
Considering how huge an improvement of ~20-30 ms seems when jumping from a 5D to a 1D, I can only imagine how tough it will be to switch down to 160. I guess I'll find out soon enough.
p.81 #9 · Sony A7 and A7r Full Frame with Canon Lenses
Rickuz wrote:
Has anyone tried focus peaking with the 85L II at f/1.2?
It can be a hit and miss when using MF (and even AF) on Canon DSLRs, but how is it on the A7R?
I use a combination of peaking and magnified view on an A7R+50mm Noctilux and don't have any issues. Here is an image of a quickly-moving toy train taken at f/0.95:
p.81 #10 · Sony A7 and A7r Full Frame with Canon Lenses
KiboOst wrote:
From my a7r review :
I did test this several times, with 70-200LII (IS off) on tripod, at 200mm focusing on a small piece full of details. With shutter times of 1/30s, 1/15s, 1/8s, 0.5s, 1sec, I couldn’t discern any vibration there. Gear was mounted with arca plate on the Metabones, on a Markins M20 + Gitzo GT5530S (unweighted).
I didn't do much tests hand held, but it seems anyway you will need fast shutter speed to get full resolution, vibrations or not.
What surprised me also is the absence of diffraction blur on 36mp, did around 100 shots at f/13 with 90tse and no detail loss at all. I ever did noticed this on 1DsII with 90tse, but will have to test with other lenses.
Actually, at least for a tripod shooter, A7R is just amazing ......Show more →
Thanks! I saw great images taken with that lens. Apparently, the 70-200 Mark II works fine, even with the IS on. I assume you mounted the combo on the tripod "collar" of the adapter rather than on that of the lens, right? Supposedly, that will yield better results than mounted on the collar of the lens itself.
p.81 #11 · Sony A7 and A7r Full Frame with Canon Lenses
snapsy wrote:
I use a combination of peaking and magnified view on an A7R+50mm Noctilux and don't have any issues. Here is an image of a quickly-moving toy train taken at f/0.95:
Great shot, Adam. Was that a handheld shot or was that on a tripod? Both adapters I have for the SLR lenses have their built-in tripod "collar". The adapter I have for my M mount lenses is so thin to incorporate a tripod collar. So, we have to use a camera plate on the body itself. From what I could gather the integrity of the A7r can be compromised if a longer/heavy lens is used. Is the Nocti about as heavy/bulky you feel comfortable mounting on the camera? Just curious....
p.81 #12 · Sony A7 and A7r Full Frame with Canon Lenses
snapsy wrote:
I use a combination of peaking and magnified view on an A7R+50mm Noctilux and don't have any issues. Here is an image of a quickly-moving toy train taken at f/0.95:
p.81 #13 · Sony A7 and A7r Full Frame with Canon Lenses
I bought the a7R because how great the Sony sensors are. I decided to compare it to my 5d3 as with many Canon shooters, I have hit the DR ceiling many times.
I understand the test below is more of a torture test and a bit impractical but I really wanted to see how much I can push the RAW files. All processed in Lightroom using same treatment. No noise reduction except the default +25 noise.
p.81 #15 · Sony A7 and A7r Full Frame with Canon Lenses
AGeoJO wrote:
Great shot, Adam. Was that a handheld shot or was that on a tripod? Both adapters I have for the SLR lenses have their built-in tripod "collar". The adapter I have for my M mount lenses is so thin to incorporate a tripod collar. So, we have to use a camera plate on the body itself. From what I could gather the integrity of the A7r can be compromised if a longer/heavy lens is used. Is the Nocti about as heavy/bulky you feel comfortable mounting on the camera? Just curious....
Thanks. It was handheld. I looked for an M adapter with a tripod mount but couldn't find one, probably for the same reasons you listed. The Noctilux is an extremely dense lens, far too heavy to hang off the E-Mount for tripod-mounted use unfortunately. I'm still searching for a tripod solution for it.
p.81 #16 · Sony A7 and A7r Full Frame with Canon Lenses
mttran wrote:
+1, Way to go Adam...your test tells me A7r is definitely for my 50Ls and 85L
I agree, for me the A7R was made for large aperture primes. It has all the utility of the NEX APS-C cameras but with higher acuity for those primes due to the lower optical magnification of a FF sensor. The 50L is next up on my list to try with it
p.81 #17 · Sony A7 and A7r Full Frame with Canon Lenses
Hmm
people start to understand what i meant and show years back in my old comparison of a d90 and a 5dmk2 and later on with d800 and 5dmk3, the color depth and DR are amazing from the sony sensor due short analog path way , raw wise ADC at the sensor edge, and low read out noise, at Dpreview I was called a fool and could not exposure properly etc etc
wellcome to 14 stops DR and what YOU can do with it , regarding exposure etc
p.81 #19 · Sony A7 and A7r Full Frame with Canon Lenses
Mikael Risedal wrote:
Hmm
people start to understand what i meant and show years back in my old comparison of a d90 and a 5dmk2 and later on with d800 and 5dmk3, the color depth and DR are amazing from the sony sensor due short analog path way , raw wise ADC at the sensor edge, and low read out noise, at Dpreview I was called a fool and could not exposure properly etc etc
wellcome to 14 stops DR and what YOU can do with it , regarding exposure etc
Don't dare mention that on Canon Rumors to this day though, you'll be eaten alive!
If it doesn't say Canon, it's junk on CR.
p.81 #20 · Sony A7 and A7r Full Frame with Canon Lenses
Rickuz wrote:
^ Yes, it seems that more and more people in Canon-land are finally beginning to understand this simple fact.
But some of them will still tell you: "expose properly, and you won't need more DR / shadow pushing". .. lol
I always knew that the Sony sensors had much better dynamic range in the darks but didn't KNOW until a few days ago when I pulled up a few a7r files and was absolutely blown away by how malleable they were. In terms of shutter speed, focusing speed, etc. the 5D3 is phenomenal but I didn't realize just how far behind Canon sensors were until this week. It is pretty sad, honestly. On the fence about trading out my 5D2 for an A7/r and keeping my 1D3 for its fast focusing, tracking, and shutter speed. We'll see.
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