Olympus UK E-System User Group
Olympus UK E-System User Group

Join our unique resource for Olympus Four Thirds E-System DSLR and Pen and OM-D Micro Four Thirds photographers. Show your images via our free e-group photo gallery. Please read the e-group.uk.net forum terms and conditions before posting for the first time. Above all, welcome!


Go Back   Olympus UK E-System User Group > Cameras, lenses and system accessories > Lens focus > Legacy Lenses

Legacy Lenses Discuss the use of older lenses, using adapters, from the Olympus OM system, Leica M and R-series, and the millions of others too.

Reply
 
Thread Tools Display Modes
  #1  
Old 22nd March 2018
Harold Gough Harold Gough is offline
Full member
 
Join Date: Oct 2014
Location: Reading UK
Posts: 5,644
Thanks: 56
Thanked 783 Times in 714 Posts
Likes: 40
Liked 3,104 Times in 1,670 Posts
Printing-Nikkor 150mm Reversed

For macro, one of my setups uses two Olympus OM telescopic tubes. For this exercise I measured (hand-held so approximate) the FOV width with the tubes both fully extended and with both fully retracted. I did this for the lens mounted normally and with it reversed. The body was a full frame Sony Alpha A7R.

Lens mounted normally: maximum extension FOV 24m, minimum extension FOV 38mm

Lens mounted reversed: maximum extension FOV 25mm, minimum extension FOV 45mm.

I could see no difference between the lens orientation, in the slight vignetting in the corners, being more for the higher magnification (longer extension) in each case.

The normal values were with 7mm of additional extension which I was unable to detach for the reversed check.

The lens seems +/- symmetrical and there is no significant advantage in reversing it.

Harold
__________________
The body is willing but the mind is weak.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Printing Nikkor Macro at 2:1 on Full Frame Harold Gough Foto Fair 2 4th January 2018 12:40 PM
Laowa 7.5mm Reversed on m4/3: Arcyria sp Harold Gough Wide angle 0 31st July 2017 02:52 PM
Three Printing-Nikkor 105mm Images Harold Gough Foto Fair 4 19th July 2017 05:39 PM
Nikon AF-S NIKKOR 300mm f/4E PF ED VR sapper Telephoto 8 16th July 2015 10:02 PM
Nikkor 50mm f1.8s mk III crimbo Legacy Lenses 0 13th July 2009 07:17 PM


All times are GMT. The time now is 01:25 PM.


The Write Technology Ltd, 2007-2019, All rights reservedAd Management plugin by RedTyger