The UV is for UV. Cutoffs the UV at a higher level. The R filters are RED. So the R1 and R1,5 are very similar. The R1 is more like a skylight while the R1,5 is closer to an 81A. On Nov 17, 2007 7:01 PM, Truong H.X Truong <truongthx@xxxxxxx> wrote: > Dear, > > How difference are they? R-1, R1,5 and UV...filters > > Thanks, > XTruong > > --- > 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 > > -- Peter K Ó¿Õ¬