Archived posting to the Leica Users Group, 1998/10/09
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]While I can't speak to the Peak filter, I have encountered the focus shift problem when exposing through filters onto vc paper. I use green and blue cc filters below the lens with a cold light head. One slightly mushy print resulted from using a grain focuser without a filter in place, and I then noted that grain in focus without a filter was slightly out of focus after the filter was mounted. Roy On 8 Oct 98 at 22:17, Disfromage@aol.com wrote: > Hi all, > I just purchased a Peak grain focuser-it's a fantastic instrument. > I do have > a question though. It came with a blue filter which the > manufacturer says to use for black and white. I know there has been > some controversy about focus shift especially with variable contrast > paper ( which I use ). Does anyone know if I should use the filter? > If it's not important I'd rather not use it as it's quite dark. > TIA > Richard Wasserman >