p.108 #2 · Official: Sony A7 and A7R Fullframe Mirrorless
Actually, using the traditional 50 times focal length estimate of infinity, I was just 7.5cm short, so I guess my estimate is reasonably accurate... Or are you supposed to switch to meters or something? I think I am remembering something wrong.
p.108 #3 · Official: Sony A7 and A7R Fullframe Mirrorless
carstenw wrote:
Think carefully before choosing the A7R. The A7 has a number of advantages, and although they don't seem to affect your normal workflow (that I can think of), they are still there in case anything changes. The A7R has exactly one advantage: Almost no AA-filter 36MP sensor.
I have no hurry, Apple haven't yet offered support for either model. If I would have to choose now, I would buy A7. I'm waiting somebody reliable to confirm that A7r "shutter shock" is really not an issue with long lenses without stabilization. But even A7r would be OK, I still might choose A7.
I'm not resolution oriented, actually I'm happy to resolution of 5DmkII 20Mpix with AA (of course I was drooling after D800E few years ago, but I got over it...) - so 24MP vs 36MP is not key question for me - also the AA in A7 doesn't seem to be really bad based on wfrank etc. fullsize samples available.
carstenw wrote:
Oh, the batteries are like 90-year-old people running marathons. You will needs a few I guess. I have two, and used a full one in one light day of shooting. I would carry at least three.
Last weekend (about -1C) I was 4 hours in forest and used 4pcs Canon LP-6E on two 5DmkII bodies shooting 135mm/180mm panos . I have only 6pcs LP-6E currently, and I'm/was considering to buy 2-4pcs more, because on full weekend shoot (no electricity=no charging) the 6 batteries have traditionally ran out of juice. So most likely I need 6-10pcs for each A7 body - luckily they are cheap and quite lightweight. Thou I wonder what they say at airport security if I have 20 Li-Ion batteries in my bag, since they are more or less classified as bombs these days...
p.108 #4 · Official: Sony A7 and A7R Fullframe Mirrorless
How long a lens? What shutter speeds? What size of tripod? How to release the shutter (I guess with 2 second delay since I don't have the Sony wired release)? I have a 70-200, and a 300, and a 1.4x TC, which I could test. I have Gitzo GT1542T and GT3541XLS.
p.108 #6 · Official: Sony A7 and A7R Fullframe Mirrorless
carstenw wrote:
How long a lens? What shutter speeds? What size of tripod? How to release the shutter (I guess with 2 second delay since I don't have the Sony wired release)? I have a 70-200, and a 300, and a 1.4x TC, which I could test. I have Gitzo GT1542T and GT3541XLS.
180mm Leica will do.
From 0.3s to ~"half of the sync speed" (over sync speed there is only horizontal band of sensor exposed to light).
Large tripod (Gitzo 3 series ok).
2s or remote should do fine.
...but you don't have A7r, I doubt it's issue with A7 since it has electronic first curtain.
With 5DmkII I can cause systematically smaller RAW file (=less detail due to vibration) with Leica APO 180mm by using mirror lockup vs. using live view electronic first curtain. I can do this with 180mm Leica if I attach camera's L-bracket to tripod head, instead of using lens collar OR by using flimsy plastic tripod collar (the Leica one). As far as I have understood Canon's mechnical first curtain is smoother than A7r - so I could imagine that A7r can have issue regarding this.
p.108 #8 · Official: Sony A7 and A7R Fullframe Mirrorless
ulrikft2 wrote:
For people like me, that will use this with mostly slr lenses, I'm not sure I see any advantages in the A7 over the A7r (other than price, that is).
p.108 #10 · Official: Sony A7 and A7R Fullframe Mirrorless
Samuli Vahonen wrote:
180mm Leica will do.
A common feeling
From 0.3s to ~"half of the sync speed" (over sync speed there is only horizontal band of sensor exposed to light).
Large tripod (Gitzo 3 series ok).
2s or remote should do fine.
...but you don't have A7r, I doubt it's issue with A7 since it has electronic first curtain.
The electronic first shutter curtain can be switched off. I will try and see.
p.108 #11 · Official: Sony A7 and A7R Fullframe Mirrorless
douglasf13 wrote:
To me, a big reason to choose the A7 is the electronic first curtain shutter. Less important to me would be the faster flash sync speed.
The A7 shutter sounds like *clunk* with the electronic first curtain. A bit loud, not very. With it off, the sound is *clunk-clunk*. Louder and less defined, less nice, but not a big difference in sound.
p.108 #12 · Official: Sony A7 and A7R Fullframe Mirrorless
carstenw wrote:
The electronic first shutter curtain can be switched off. I will try and see.
That I also was thinking, but we don't know is the shutter same between cameras. One would of course assume so, but different sync speed makes one wonder is it really so.
PS. If you work perfectly; big tripod on firm ground and cameralens-system center of gravity rests on top of tripod head pivoting point it's hard to make much difference. However in real life one's tripod can be half in water, one foot in slippery rock and panorama head on top of normal head, and then the real life differences start to show up. Making conditions perfect I'm pretty sure one can shoot even Pentax 6x7 with 300mm @ 1/15s without no issues...
p.108 #13 · Official: Sony A7 and A7R Fullframe Mirrorless
douglasf13 wrote:
Edit: Now I'm wondering if the A7R has the electronic first curtain after all
It's confirmed not to offer the electronic first curtain. Are you raising the question if it actually has it and is simply not activated by the firmware or something?
p.108 #14 · Official: Sony A7 and A7R Fullframe Mirrorless
carstenw wrote:
Actually, using the traditional 50 times focal length estimate of infinity, I was just 7.5cm short, so I guess my estimate is reasonably accurate... Or are you supposed to switch to meters or something? I think I am remembering something wrong.
The big question is if the AOV might change at infinity with the FE 35 so a calculation would not catch that. I know some lenses do change AOV when focused at different distances due to their optical design. I suspect your estimate of 37-38mm or so is accurate. For some, that still would matter (it would probably matter to me simply because 35mm is right at the edge of being wide enough and a few mm's makes more of a difference with AOV at the wide end than at longer focal lengths).
I believe that it is somehow from Sony. If you want I can run a McAfee Security Scan on my whole hard drive before you download the file. It will take close to an hour.
I also just scanned the file itself and it appears to be clean.
I think I am remembering something wrong.
. I have only 6pcs LP-6E currently, and I'm/was considering to buy 2-4pcs more, because on full weekend shoot (no electricity=no charging) the 6 batteries have traditionally ran out of juice. So most likely I need 6-10pcs for each A7 body - luckily they are cheap and quite lightweight. Thou I wonder what they say at airport security if I have 20 Li-Ion batteries in my bag, since they are more or less classified as bombs these days...