> From: usher99@xxxxxxx
>
> JS writes:
>
> < Do you have any feeling for the difference between actually changing
> focus in
> < focus-bracketing, as opposed to changing the camera position?
>
> Moose writes:
>
> <<<MikeG should chime in here, as he is more knowledgeable than I.
>
> My understanding is that is the change in perspective and not magnification
> that can cause trouble and artifacts... approaching 1:1 and higher mag,
> moving the cam is by far the best in in this regard... In between mags, like
> focus stacks for orchids, I can confirm that moving the cam on a focusing
> rail results in fewer changes in framing
Thanks, Mike. I think I’ll go with my initial, easily-implemented approach of
moving the camera, until I have reason to think moving the rear standard would
be significantly better.
> The extreme example is "macro landscapes”... requires one to keep the
> entrance pupil stable--putting a wide angle lens on a bellows and moving the
> rear standard to change focus... Jeff Keller came up with a way w/o mount
> surgery
Aw man, “mount surgery” sounds like half the fun!
Anyway, I’ve already surgerized a Nikon PB-4 so I could put it right on the
body, without the ~25mm or so extra extension of using a lens adapter, and
while allowing OM-System macro lenses on the other end.
Thanks much for those links! Beautiful, and worth repeating:
> http://www.heliconsoft.com/forum/viewtopic.php?f=9&t=1141
>
> Using this Franken bellows including mount surgery on an OM Zuiko:
>
> http://www.photomacrography.net/forum/viewtopic.php?t=4879
Here’s my “Frakenbellows” setup:
https://www.mu-43.com/threads/show-us-what-your-adapted-lens-looks-like-on-your-camera.473/page-156#post-1096496
:::: Jan Steinman, EcoReality Co-op ::::
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