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A7r, A7r2 - and why I'm keeping both ...

k-hawinkler

k-hawinkler

Well-known member
I wonder what kind of result my Sony A1 would produce if it had "Pre-Capture". :D

So I was shooting my A9.3 with a frame rate of 30 FPS and Pre-Capture ON.
The GIF displays a linear resolution of 1200 pixels on the long side.
So the resolution difference between the A1 and A9.3 won't matter as the images are only slightly cropped.
At 30 FPS the GIF should repeat in about 1 s to give the correct speed impression of the actual event captured.
Setting a delay of 0.03 in Photoshop after each frame seems to accomplish that.
Here goes.



Sony ILCE-9M3 + FE 400mm F2.8 GM OSS + 1.4X TC @ 560 mm, f/4, 1/3200 s, ISO 1250.

To me that seems like it would be a very useful addition to the A1 feature set.
What is your take on this?

If the A1 had this feature I am not sure that I would have bought the A9.3.
But now that I have gained some experience at 120 FPS on the A9.3, getting the A9.3 was the right way to go.
A frame rate of 120 vs 30 FPS is really a different ball game, not even close.
A buffer of 192 images allows for these shooting durations before the A9.3 slows down to 6 FPS:

• 120 FPS - 1.6 s
• 60 FPS - 3.2 s
• 30 FPS - 6.4 s
• 15 FPS - 12.8 s

unless the buffer can also being emptied while written to.
 
k-hawinkler

k-hawinkler

Well-known member
I am discovering some Peculiarities of Adobe Photoshop.
One can set the delay for each frame in seconds, 2 digits only.
I found the following behavior on my computer:

delay = 0.00 s ==> 10 FPS
delay = 0.01 s ==> 10 FPS, 100 FPS being the correct value though.
delay = 0.02 s ==> 50 FPS
delay = 0.03 s ==> 30 FPS

Hmm. Examples.

50 FPS display rate




30 FPS display rate




10 FPS display rate




provided my math is not at fault. :D
 
Last edited:
k-hawinkler

k-hawinkler

Well-known member
Phoebe shot at 120 displayed at 50 FPS.



Sony ILCE-9M3 +FE 100-400mm F4.5-5.6 GM OSS @ 400 mm, f/5.6, 1/3200 s, ISO 12,800.




Sony ILCE-9M3 +FE 100-400mm F4.5-5.6 GM OSS @ 400 mm, f/5.6, 1/3200 s, ISO 500.
 
Last edited:
k-hawinkler

k-hawinkler

Well-known member
Knorp said:
There is this weird (red) discolouration again, K-H.
Click to expand...
Thank you Bart, sorry about this.
Adobe played a trick on me when I updated Photoshop and changed parameters in creating the GIF file.

This hsould not have the weird (red) discolouration.



Please let me know otherwise. :D
 
Knorp

Knorp

Well-known member
k-hawinkler said:
Thank you Bart, sorry about this.
Adobe played a trick on me when I updated Photoshop and changed parameters in creating the GIF file.

This hsould not have the weird (red) discolouration.



Please let me know otherwise. :D
Click to expand...
I'm sorry, K-H. This time it's terribly pixelated !

Screen shot
Screenshot 2024-07-05 at 11.53.43.jpg
 
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