Devon Posted November 2, 2018 Share Posted November 2, 2018 When using an anamorphic adapter (like SLR Magic's 1.33x,) does the stretch factor DECREASE or INCREASE when focusing close-up? Thanks! Quote Link to comment Share on other sites More sharing options...
Grimor Posted November 2, 2018 Share Posted November 2, 2018 Usually projector 2x attachments change stretch when focusing. I have owned only a 1.33x (optex) and the stretch differences are not noticeable. Quote Link to comment Share on other sites More sharing options...
dhessel Posted November 5, 2018 Share Posted November 5, 2018 I have never used this particular lens but all of the anamorphic adapter I have used decreased as you focused closer. For example I had a Kowa 16H that was 2x at infinity and about 1.8x at min focus. Quote Link to comment Share on other sites More sharing options...
GiM_6x Posted November 5, 2018 Share Posted November 5, 2018 Theoretical it should not change, the optical formula is afocal (as for every lens...). But as with any lens, it will have an maximal angle to accept, and if the original lens exceed it (as for close-up focus or for a zoom to wide range), the image will be affected and somehow "limited" on the strech side which will diminish. So, it depend, if a very good adapter for that lens - no changes, else if it is somehow at limit between the lens' angle and what adapter can acomodate - might afect limiting the final image who is streched. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.