Search found 3 matches

by IgorDS
24.05.2014 22:40
Forum: Helicon Focus: Macro
Topic: camera focus constant, move camera... or use focus ring?
Replies: 17
Views: 39972

Re: camera focus constant, move camera... or use focus ring?

If you could keep the lens stationary and change focus by moving the camera then it would be great. I have seen a thread at: photomacrography.net/forum/viewtopic.php?t=4879 where the author describes just such a setup.
by IgorDS
24.05.2014 19:38
Forum: Helicon Focus: Macro
Topic: camera focus constant, move camera... or use focus ring?
Replies: 17
Views: 39972

Re: camera focus constant, move camera... or use focus ring?

My analysis of the two situations: 1) Move the camera and lens together without changing the distance between the lens and camera (no focus ring change) 2) Change focus using the lens focus ring - move the lens with respect to the sensor/film position In 1) the optical characteristics of the lens re...
by IgorDS
04.04.2014 21:20
Forum: Helicon Remote
Topic: Moving camera vs lens focus change
Replies: 11
Views: 15187

Re: Moving camera vs lens focus change

Moving the camera is preferable because the focal length of a complicated optical system such as modern composite lenses (made with several elements) does not remain the same when focus shifts. Moving the camera with its lens assures the same optical performance for every shot in the stack. Be sure ...