This is one in a series of posts on the Sony alpha 7 R Mark IV (aka a7RIV). You should be able to find all the posts about that camera in the Category List on the right sidebar, below the Articles widget. There’s a drop-down menu there that you can use to get to all the posts in this series; just look for “A7RIV”.
I was asked under what conditions the a7RIV uses 12-bit precision. Here’s my answer:
- uncompressed: 14-bit precision
- compressed continuous: 12- bit precision
- compressed otherwise: 13-bit precision
There’s a twist, though:
- LENR on: 12-bit precision, even uncompressed
Here’s the smoking gun on that last one. Eight-second exposure of the back of the body cap, file mode set to uncompressed, drive mode single shot:
How about APS-C mode?
I didn’t test that. It’s never made a difference in precision in earlier a7x cameras.
So only if long exposure NR is off, it should be 14 bit even with long exposure right? Weird habit NR option kicks in RAW shooting.
If long exposure NR is off, it will be 14 bit even with long exposure.
Nice!