Thread
:
Help needed re extension tube
View Single Post
#
10
30-12-13, 23:17
robski
Senior Member
Join Date: Dec 2005
Location: Kent UK
Posts: 3,739
With short lens and long extension tubes the focal plane can be so close to the front lens element to be of no practical use. With wide angle lens the focal plane can end up inside the lens and therefore never focus.
__________________
Rob
-----------------------------------------------------
Solar powered Box Brownie Mk2
Captain Sunshine, to be such a man as he, and walk so pure between the earth and the sea.
WPF Gallery
Birdforum Gallery
http://www.robertstocker.co.uk
updated
robski
View Public Profile
Visit robski's homepage!
Find all posts by robski
View User's Gallery Profile
View User's Gallery