f-stop auto bracket? 1Ds3

timplog

Wonder if I've been missing something but haven't seen the option yet to automate a series of different f-stops for a given exposure-similar to the "white balance" or "shutter speed" auto bracket feature that is common. Using 1Ds3 and would think Photoshop could merge similar to HDR for greater depth of field in the print?? Thanks

adbsgicom

I don't have a 1Ds, but can't you do that with exposure bracketing in Tv mode? The f/stop would change and not the speed. Works on the 5Dmk2...

pathfinder

For greater DOF, you would not want your focal point at the same spot in each image, so auto bracketing of aperture is not really what you want.

Instead, use the sharpest aperture your lens offers - typically f5.6 of f8 or f11 - and take a series of three shots from a tripod moving the focus from in front of the hyperfocal distance, at the hyperfocal distance, and past the hyperfocal distance, and then blend these images in Photoshop in some manner.

There are commercial image processing programs that do this of course - some of the macro shooters use them fairly often.

timplog

pathfinder wrote: »

For greater DOF, you would not want your focal point at the same spot in each image, so auto bracketing of aperture is not really what you want.

Instead, use the sharpest aperture your lens offers - typically f5.6 of f8 or f11 - and take a series of three shots from a tripod moving the focus from in front of the hyperfocal distance, at the hyperfocal distance, and past the hyperfocal distance, and then blend these images in Photoshop in some manner.

There are commercial image processing programs that do this of course - some of the macro shooters use them fairly often.

Thanks that was very helpful and I appreciate your time. Sounds like just the ticket and I'm going to look into the blending side of this operation this weekend if (?) I get some free time. This must be a useful in macro especially with those DOF issues. Thanks very much.

pathfinder

Helicon focus is one of the programs for focus stacking

Interesting discussion of Helicon Focus here

Combinez is an open source software program that combines image stacks for increasing Depth of Field also No Mac version though.