View Single Post
  #7  
Old 06-09-2014, 08:08 PM
doppler's Avatar
doppler (Rick)
Registered User

doppler is offline
 
Join Date: Nov 2012
Location: Mackay
Posts: 1,656
It might be just spherical aberration of the lens. In the old film days we would have stop down a fast lens a couple of f stops to reduce the effect.

The first pic is a 50mm f 1.7 shot and the second is the same lens stopped down to f 2.8, not as bright but much sharper.
Attached Thumbnails
Click for full-size image (spherical.jpg)
145.6 KB49 views
Click for full-size image (spherical2.jpg)
174.5 KB48 views

Last edited by doppler; 06-09-2014 at 08:33 PM.
Reply With Quote