Does the A7iv only shoot 10fps with CF Express Cards In Raw?

[dwalme]

Definitely something weird going on: the a7IV shares the same processor as the a7sIII and a1.

My a7sIII can do RAW+Jpeg (uncompressed+superfine) to v90 UHS-II SD with unlimited buffer.

The a1 is capable of 100's.

Yet the a7IV can only manage 20 frames with UHS-II SD before hitting the buffer ?? strange.

Would the fact that the 7sIII has a 12mp sensor rather than 33mp like the A7IV explain it?

What about the A1 having a stacked sensor and the A7IV not?

More than likely the size of the buffer in A7 IV is much smaller than A1.

 

[Funny Valentine]

Definitely something weird going on: the a7IV shares the same processor as the a7sIII and a1.

My a7sIII can do RAW+Jpeg (uncompressed+superfine) to v90 UHS-II SD with unlimited buffer.

The a1 is capable of 100's.

Yet the a7IV can only manage 20 frames with UHS-II SD before hitting the buffer ?? strange.

Would the fact that the 7sIII has a 12mp sensor rather than 33mp like the A7IV explain it?

Yes a7sIII uncompressed RAW files are around 26 MB

What about the A1 having a stacked sensor and the A7IV not?

Stacked sensors have no impact on the buffer. The processors and buffer memory are responsible.

 

[Mr_Win]

I still shoot with my 5 year old A99ii and it will allow me to shoot 60 compress raw images at 42 megs to a UHS-i card before the buffer slows down. I would have thought that with a smaller megapixel sensor and a UHS-ii card slot I could get more shots on the A7iv before buffer slowdown.

Those cameras as well as the A7riii were cameras north of $3K right?

I’m thinking V90 has to last for a while before running out, those cards are decently fast and cost a lot less than CFE type A