Rick, I'll happily let you know. Since you've spent more time looking into it, what are the worst parameters regarding magenta concrete?
Cheers Ecke 2010/7/1 Rick Womer <rwomer1...@yahoo.com>: > Ecke, > > I will be very interested to know if the new filter eliminates the magenta > concrete. That and VPN in dark skies are the two biggest problems with > nocturnal photography with my K10D. > > Rick > > http://photo.net/photos/RickW > > > --- On Thu, 7/1/10, eckinator <eckina...@gmail.com> wrote: > > >> hi gang >> >> maybe this is old news to most of you but I thought I'd >> post it anyway >> in case it isn't >> >> got my recent aby steal, a B+W UV/IR-CUT filter in the mail >> today and >> replaced the Hoya Pro1 Digital MRC UV filter used so far >> which despite >> frequent old school cleaning - give it a good moist breath >> and wipe it >> with a piece of microfibre cloth - had lots of spots and >> fingerprint >> residue etc on it. I remember reading somewhere Hoyas have >> a bad rep >> for being hard to clean and so I broke out the lens >> cleaning liquid >> and a bunch of other stuff and the result was invariably a >> colorful >> smeary mess looking something like a wet oil stain in the >> street if >> you know what I mean. Tried helmet visor cleaning tissue >> next, >> eyeglass cleaning tissue, Olympus silicone impregnated lens >> cleaning >> parchment and everything I could think of. Same mess every >> time. >> >> So I quit and googled "cleaning Hoya filters" thinking, >> "heck I'll ask >> PDML if I can't find anything". >> >> Sure enough the first result was >> http://www.hoyafilter.com/products/hoya/coatings.html >> where it says >> "Never use any chemicals, such as lens cleaning fluid, on >> your >> filters, as these can damage the coatings. If any stubborn >> stains >> occur, these can usually be washed off with some clean >> water and a >> soft cotton cloth." >> Big OUCH, I had used all apparently suitable chemicals at >> my >> disposal... so I let it soak in water for a while, found a >> clean >> cotton kitchen towel and gently rubbed. Some came off, some >> didn't so >> I rubbed harder, figuring the filter was probably ruined >> anyway. But >> guess what, every single stain came off, there is no lint >> on the >> filter, no scratches, no cleaning marks no matter which way >> or side I >> hold it into the light, under a light or shine one across >> it. It looks >> absolutely like new. I can't find a single fault. >> >> BTW I bought the B+W to test the claim that the K10D's AA >> filter's IR >> suppression is weak and that the filter will prevent color >> casts >> ("magenta concrete") in darker image areas. There won't be >> a newer >> Pentax for me in the near future so I have to squeeze the >> best out of >> what I have. If there is anything to report, I will pass it >> on, if you >> don't hear from me about this again I wasted a couple of >> Euros. >> >> Cheers >> Ecke >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link >> directly above and follow the directions. >> > > > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
