Home · Register · Search · View Winners · Software · Hosting · Software · Join Upload & Sell

Moderated by: Fred Miranda
Username   Password

  New fredmiranda.com Mobile Site
  New Feature: SMS Notification alert
  New Feature: Buy & Sell Watchlist
  

FM Forums | Alternative Gear & Lenses | Join Upload & Sell

1       2       3              7      
8
       end
  

Archive 2012 · new Sony NEX-VG900 with M lenses?
  
 
_julian_
Offline
• •
Upload & Sell: Off
p.8 #1 · p.8 #1 · new Sony NEX-VG900 with M lenses?


The lack of color fringing, means that the micro lenses are concentrating light through the CFA into the wells without any adjacent spillover (cf NEX 7 or M9).

I wonder if the cause of the detail smearing is thus due to refraction in the AA/IR filter/layer that sits on top of the microlenses, in combination with the high incidence angle in the corners?

To take an optimistic view - the fabrication effort required to remove this for a dedicated stills camera like the hypothetical NEX 9 or FF GXR might be relatively low.



Nov 18, 2012 at 08:12 PM
sebboh
Online
• • • • • •
Upload & Sell: Off
p.8 #2 · p.8 #2 · new Sony NEX-VG900 with M lenses?


dakw23 wrote:
Problems with the 75mm, can you be more specific? Note in the Bethesda fountain series the focus point is on the trees behind the angel, so looking at the bricks in the bottom right won't be a good indication of sharpness at f/2, due to DoF.


it is harder to tell due to some of the focus variations, but it seems to have pretty distinct sharpness fall off towards the edges even at f/5.6.



Nov 18, 2012 at 10:00 PM
rscheffler
Offline
• • • •
Upload & Sell: Off
p.8 #3 · p.8 #3 · new Sony NEX-VG900 with M lenses?


_julian_ wrote:
The lack of color fringing, means that the micro lenses are concentrating light through the CFA into the wells without any adjacent spillover (cf NEX 7 or M9).

I wonder if the cause of the detail smearing is thus due to refraction in the AA/IR filter/layer that sits on top of the microlenses, in combination with the high incidence angle in the corners?

To take an optimistic view - the fabrication effort required to remove this for a dedicated stills camera like the hypothetical NEX 9 or FF GXR might be relatively low.


I would rather have (reasonable) color fringing than edge smearing. Fringing can be removed... smearing can't.

Smearing is likely caused by the AA filter and the thickness of the cover glass and any other sensor toppings. There was a really good write up about this in a fairly recent Zeiss paper (link is a pdf file) - the problem is explained on pg. 12.



Nov 19, 2012 at 08:46 AM
1       2       3              7      
8
       end




FM Forums | Alternative Gear & Lenses | Join Upload & Sell

1       2       3              7      
8
       end
    
 

You are not logged in. Login or Register

Username   Password    Retrive password