Archived posting to the Leica Users Group, 2007/09/13

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]
Subject: [Leica] IR/UV filter differences
From: imagist3 at mac.com (Lottermoser George)
Date: Thu Sep 13 16:48:29 2007
References: <59A6489B-7C4F-4A37-8FE8-ED40DA1CD704@mac.com> <6DAE1F5B-F8D5-4346-A04C-4C5E04C4365E@comcast.net>
 
Thanks Len. Very informative. It would appear that the firmware is  
truly set for Leica's filters then?

Regards,
George Lottermoser
george@imagist.com



On Sep 13, 2007, at 6:44 PM, Leonard Taupier wrote:

> I've done extensive testing with Leica, B+W and Heliopan filters.  
> The differences are most pronounced at the extreme wide angle  
> lenses like 15, 16, 18 and 21mm. The B+W and Heliopans are stronger  
> then the Leica's so the M8 under corrects for cyan creep. In the  
> case of the 21mm a very slight correction in PS is OK. It's a lot  
> more difficult with the ultra wides.
> At focal lengths above 21mm I don't see a difference.  All my  
> testing was with lenses that are 6 bit coded and from 16mm up to  
> and including 35mm. My son did the same test with his CV15mm.
> I hope this helps.
Replies: Reply from len-1 at comcast.net (Leonard Taupier) ([Leica] IR/UV filter differences)
 In reply to: Message from imagist3 at mac.com (Lottermoser George) ([Leica] IR/UV filter differences)
Message from len-1 at comcast.net (Leonard Taupier) ([Leica] IR/UV filter differences)