View Single Post
  #85  
Old 14-06-07, 14:07
Don Hoey's Avatar
Don Hoey Don Hoey is offline  
Senior Member
 
Join Date: Dec 2005
Location: Norfolk
Posts: 4,462
Default

Quote:
Originally Posted by Saphire View Post
Brilliant Don, I have downloaded the program to have a go it looks like it works well. I have got the 58-58mm adapter ring now so will have to have a go at getting some close-up. I might have to buy another Canon 50mm lens so I can reverse onto that, it will be much easier to find focus than the reversed lens on the 75-300.

Christine,

Here are a set of full frame pics to show the magnification effect of reversing a 50mm lens on another lens. 50 on a 50 shows serious vignetting. A steel ruler marked in milimeters was used so you can see how large or should I say small the field of view is.

Pic 1 : 200mm f4 with reverse 50mm f1.4
Pic 2 : 105mm f2.5 with reversed 50mm f1.4
Pic 3 : 50mm f1.4 with rversed 50mm f2
Pic 4 : The lunatic fringe and just for fun, 200mm f4 with reversed 24mm f2.8. Focussing this is a nighmare.

Don
Attached Images
File Type: jpg 200-rev-50.jpg (92.2 KB, 3 views)
File Type: jpg 105-rev-50.jpg (95.1 KB, 4 views)
File Type: jpg 50-rev-50.jpg (44.1 KB, 2 views)
File Type: jpg 200-rev-24.jpg (102.7 KB, 5 views)
Reply With Quote