speedmaster20d wrote:
so this is where the 12 row thing come from?
it's too bad the blog owner is not here to comment. When I read his comments he does not claim to know what is causing this issue
"’I’m having a hard time figuring out just what’s happening, although it is pretty clear to me that the camera is performing analog to digital conversion on more than one row at a time."
as we know now the conversion can happen in parallel so this his second part of the statement can be true but neither is he saying nor can we conclude that the charge transfer itself is happening for groups of row... or that it is responsible for this artifact
I don't think we can explain this bizarre artifact this simply. In fact the patten looks as if there is something different between even and odd columns in those 12 rows.
If we had access to the raw images, we could split each image into 2 images, one for even columns and one for off columns to see if the bands appear in just one or both images to shed more light....
It is very difficult to say what is causing this, but it this looks some kind of design bug, some kind unwanted effect that is not result of just rolling shutter.... whatever it was it seems to have been fixed
Here is an image taken in APS-C mode and there is not much evidence of lean in the background objects and I am panning sideways to try and keep the bird in the frame.
I have been doing testing with the A7RVI and have found that in APS-C mode the scan rate seems similar to my A1. Maybe slightly slower. Hummingbird shots are mostly usable. FF mode? Only certain wing movements look normal...maybe only 40-50%.
My suggestion is stick to APS-C for hummingbirds with the A7RVI.
The first image here shows how weird things can get in the FF mode on the A7RVI. Some look completely normal but then this happens...
The second image is full-frame and looks normal -- so not all bad!
The third image appears typically what I get in APS-C mode. Much better keeper rate.
I also tried mechanical shutter full-frame and I did not like that at all. Shutter blackout and inconsistent focus -- ugly. I would never use it for fast action.
Very strange scanning on the a7RVI full-frame
Wing beats look normal here in full-frame -- sometimes it looks good!
AJay wrote:
I have been doing testing with the A7RVI and have found that in APS-C mode the scan rate seems similar to my A1. Hummingbird shots are mostly usable. Uncropped mode? Only certain wing movements look normal...maybe only 20-40%. I also have the A9III and of course they are all usable, at least from a distortion standpoint.
My suggestion is stick to APS-C for hummingbirds with the A7RVI.
The first image here shows how weird things get in the FF mode on the A7RVI. Some look completely normal but then this happens...
The second image is full-frame and looks normal -- so not all bad!
The third image appears typically what I get in APS-C mode. Much better keeper rate.
I also tried mechanical shutter full-frame and I did not like that at all. Shutter blackout and inconsistent focus -- ugly. I would never use it for fast action....Show more →
Holy shxt! That distortion in the first one is off the chart. I thought you would only see that kind of distortion using electronic shutter of A7R5. I tried the A7RVI on hummingbirds and did get maybe 1 out 5 that showed very visible rolling shutter effect but nothing close to you first shot. Still plenty of good shots to choose from though.
Since I have two A1IIs, I am not going to bother to use the A7RVI for fast stuff, not that it can't do it but the A1II is just more suitable for that type of stuff, IMO, of course.
AJay wrote:
I have been doing testing with the A7RVI and have found that in APS-C mode the scan rate seems similar to my A1. Maybe slightly slower. Hummingbird shots are mostly usable. FF mode? Only certain wing movements look normal...maybe only 40-50%.
My suggestion is stick to APS-C for hummingbirds with the A7RVI.
The first image here shows how weird things can get in the FF mode on the A7RVI. Some look completely normal but then this happens...
The second image is full-frame and looks normal -- so not all bad!
The third image appears typically what I get in APS-C mode. Much better keeper rate.
I also tried mechanical shutter full-frame and I did not like that at all. Shutter blackout and inconsistent focus -- ugly. I would never use it for fast action....Show more →
We've had a discussion on this on the main topic for the camera and it is a great input you have given here thank you very much!
APS-C looks very promising. I do wonder if it is about the APS-C mode itself or rather about not filling the frame in the FF mode.
I think this camera seems to have only minor weaknesses even for tough action, great job by Sony. I would still love to see how it would perform in a pre-capture takeoff scenario but signs are overall positive.
APS-C looks very promising. I do wonder if it is about the APS-C mode itself or rather about not filling the frame in the FF mode.
I think this camera seems to have only minor weaknesses even for tough action, great job by Sony. I would still love to see how it would perform in a pre-capture takeoff scenario but signs are overall positive....Show more →
Like I said, even though the rolling shutter effect is present some times but there are still plenty of good ones what don't show that. But If you are panning with a lot of vertical trees/buildings in the background, then most of your shots will show the leaning.
Douglas L wrote:
Like I said, even though the rolling shutter effect is present some times but there are still plenty of good ones what don't show that. But If you are panning with a lot of vertical trees/buildings in the background, then most of your shots will show the leaning.
Yes indeed, it seems so. Thank you again also for your input.
I am less concerned about the panning-related artifacts than the broken wings as a mode of failure.
If I were to buy a camera today, it would be this one based on what I have seen on the subject so far.
