Carlos, Thanks very much. This is good, useful information. Robert On Nov 6, 2011, at 8:42 AM, CarlosMFreaza wrote: > As I commented some weeks ago, I have a blog entry dedicated to Rollei > filters and I have received some questions about them. There is some > confusion about Rollei H1, Rollei UV, Rollei R1, Rollei R2 and Rollei > R1,5 filters function: > > Rollei UV: This is a filter for B&W photography only, it does not work > fine for color photography because it has a color tint, this filter > has a strong effect to block UV rays, it’s very goodfor high mountain, > snow, water surfaces, high and distant landscapes. > > Rollei H1: It could be used for B&W photography however it was made > from 1950 for color photography mainly. Rollei literature says this is > an UV filter and Skylight filter for landscapes with haze, to > eliminate the blue cast coming from the atmosphere, the UV filtering > is soft and perhaps it wouldn’t work fine at the high mountain. Rollei > also says this is a filter for Xenar and Tessar lenses; Planar, > Xenotar and Sonnar needn’t it, thanks to the “glass” used to make > these lenses ( some Rollei brochures say it), anyway Rollei > manufactured the filter for BII and BIII too but for fewer years than > for BI. Firsts color films were very sensitve for the blue and UV > light. > > Rollei R1: This color conversion filter has an UV filter effect and > slight color warming effect for Tessar and Xenar lenses, it does not > have UV filter effect for Xenotar, Planar and Sonnar but it has slight > color warming effect for these lenses. > > Rollei R2: It’s a bit stronger than R1 and has UV filter effect and > soft warming effect for every Rollei TLR lens. > > Rollei R 1,5: This filter was manufactered from 1957, after R1, R2, R5 > and R11 color conversions filters were no longer manufactured (1966), > it would be equivalent regarding a Skylight 81 A or B filter, Rollei > manufactured this filter up to a few years ago and perhaps it’s still > manufactured. > > It’s interesting to read about UV and Skylight filters tests, there > are a lot of differences for the filter effect according the > manufacturer, coating, glass, design, despite the glasses look so > similar. > > Carlos > --- > Rollei List > > - Post to rollei_list@xxxxxxxxxxxxx > > - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' > in the subject field OR by logging into www.freelists.org > > - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with > 'unsubscribe' in the subject field OR by logging into www.freelists.org > > - Online, searchable archives are available at > //www.freelists.org/archives/rollei_list > --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list