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Re: [OM] WTFocus Stacking`

Subject: Re: [OM] WTFocus Stacking`
From: DZDub <jdubikins@xxxxxxxxx>
Date: Sun, 17 Jul 2022 10:44:51 -0500
On Sat, Jul 16, 2022 at 7:25 PM Wayne Harridge <
wayne.harridge@xxxxxxxxxxxxxxxxxxx> wrote:

> I've read through that DP Review thread several times and from what I
> understand:
> * The focus differential you set for FS is not a fixed value but is
> modified by the camera depending on aperture (and presumably focal length)
> * The focus differential you set for FB is a fixed value and is not
> modified by the camera depending on either aperture or focal length
> Is this correct?  I found the posters explanation somewhat confusing.

Your first bullet seems like it must be true if the DP reviewer's summary
is correct and "3" can be taken more or less as a constant for giving the
greatest latitude from the choices of number of photos and DOF at
particular stops.

My inclination going forward is:

     *  set FS parameters at the max number of photos (15 for me) and "3"
and shoot more or less wide open or possibly stopped down 1 stop -- might
get lucky and then done, but probably not.
     *  if focus goes too deep on the in-camera FS, you probably can get
exactly what you want from a portion of the photos on the card and get rid
of the rest after doing a third-party FS
     *  if focus is not deep enough on the in-camera stack, change to FB
and increase photos to 30 or so;  might as well reduce differential from
"3" to "1" because reliance is on number of photos to cover desired range
of focus

Making any sense?  I tend to like seeing what the camera does with the FS.
I might get over that as I get more experience.

Joel W.
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