Archived posting to the Leica Users Group, 2001/02/21
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I would say that if in practice you don't have a focus shift problem don't worry about it! Buzz Hausner - -----Original Message----- From: Austin Franklin [mailto:austin@darkroom.com] Sent: Wednesday, February 21, 2001 10:20 AM To: leica-users@mejac.palo-alto.ca.us Subject: [Leica] focus shift due to filter? A claim has been made (elsewhere) that using a UV filter will cause a 'focus shift', which, would be more critical for a rangefinder...depending on how shifted the focus is. What are the facts around this claim? I take a Hasselblad with a 110/2, and a magnifying hood...critically focus on something ~3' away, and I don't see a focus change with a UV filter on or off...and all my Noctilux and Summilux images are dead on focus wide open...and I do use UV filters, and I do a LOT of close up work...I would think I'd see it there. Perhaps there is some focus shift, but it is certainly not significant.