After Black Shading: Non uniform black with visible sharp edge above 75fps

[Thomas Vecsei]

Some strange effects after taking these steps:

Project 25fps, 5K
ISO 12800
Black Shading, current fps
when finished:
CalMap user HS
select 96fps, I get this: uniform black (or noise at that high ISO), sharp edge and below that noise increasing to left and right, to the right a little blueish


when switching to 90fps:


the sharp edge moves even with small change in fps

at and below 75fps it's OK:


Tried this 3 or 4 times, always same result.

With CalMap factory no issue - except that it's not blackshaded for required fps and my environment (temperature)...

Anyone with similar effect?

[Mike Lary]

Calmap selection should be based on shutter speed/exposure time, not fps. The HS calmap is for exposure times shorter than 1/1000th or longer than 1/15th.