R6 Focus Stacking bracketing to overexposed images

Blue-Shift wrote:

charlyw64 wrote:

I suspect that the aperture is returned to f/2.8 after the first shot. Maybe do a trial an look into the lens what happens to the aperture. And then forget about the mess of taking stacks, they are not worth the hassle, especially if parts of the subject overlap within the stack, that will always lead to horrible artifacts that no software can remedy because they are down to the physical facts of focusing "through" foreground elements which will be depicted unsharp but larger as they are in the stack layer that is sharp...

Good call Charly,

I tried reducing the exposure by 2x in Lightroom and now the pics are identical, the formerly bright one with reduced DOF. So this is what is happening here.

Which is weird for 2 reasons.

1. It shouldn't happen in the first place

Indeed this is strange. In burst mode the aperture on the R7 stops down at the beginning of the burst and then stays put.

2. If it does, it should register as F2.8 in the EXIF data. But that says F5.6 still.

I think this is a protocol error that crept in (or was always present but has gone unnoticed)...

Well, I assume it will be removed when Canon releases the fixed firmware. We'll see.

I assume so too...

Also, about the stacking: I found it to be practical for some cases. Sometimes, it works quite well without too much of a hassle if one isn't too perfectionist. Also, it can be good just to have a range of shots to choose from, so I like the functionality.

The latter (focus bracketing) could well be an option for some circumstances. But I usually focus manually and focus a smidge beyond what should be the closest area in focus - because DOF extends in both directions from the plane of focus and so I don't waste any of the DOF for thin air between the subject and the camera.