Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Hello and right away a question
#8
Quote:I do not think (as opposed to know) that PF is a reflection effect caused by the lens. It feels highly unlikely that reflections create a halo effect. (Re-)Reflections would be distributed across the image field - essentially re-reflections are a freak effect.

 

If I had to GUESS, this may be caused by the micro-lenses that sit in front of the photodiodes but not by the lens. These micro-lenses are certainly NOT coated. It feels viable that sensor-surfaces reflections are distributed to adjacent micro-lenses. This would also explain the halo effect.

 

Just guessing.
But is that were the case, one would see similar with every lens with a similar f-ratio. And we know that is not the case... Even the OP notes a difference between his 75mm f1.8 and his 50mm f1.8.

 

Do you have any ideas about how to do a quick and easy PF test? Then I could conduct some experiments.

  


Messages In This Thread
Hello and right away a question - by PhotoGMan - 02-04-2014, 09:12 PM
Hello and right away a question - by Klaus - 02-05-2014, 04:11 AM
Hello and right away a question - by PhotoGMan - 02-05-2014, 04:57 PM
Hello and right away a question - by Klaus - 02-06-2014, 12:26 AM
Hello and right away a question - by Klaus - 02-06-2014, 12:50 AM
Hello and right away a question - by Brightcolours - 02-06-2014, 09:31 AM
Hello and right away a question - by Klaus - 02-06-2014, 12:34 PM
Hello and right away a question - by PhotoGMan - 02-06-2014, 11:21 PM
Hello and right away a question - by Klaus - 02-07-2014, 01:13 AM
Hello and right away a question - by PhotoGMan - 02-09-2014, 06:49 PM
Hello and right away a question - by PhotoGMan - 02-22-2014, 11:25 PM
Hello and right away a question - by PhotoGMan - 02-22-2014, 11:29 PM
Hello and right away a question - by Mahadragon - 06-07-2014, 10:51 PM

Forum Jump:


Users browsing this thread:
3 Guest(s)