Hi Alan, Not a CPL expert, but just attempting a brief analysis. To compare, I clicked each link in succession, opening them in the same window in IE. I don't think there's much colour difference in the blue saturation really; solely based on these two examples, I think it's too subtle to warrant paying the extra money for the B+W. Like William, I noticed the B+W's poorer flare control, it's the most obvious thing when you're flicking between the two images (back + forward buttons) in IE (with the next picture in the exact same position as the second, so any 'movement' is a difference in image quality). The second thing I noticed was in the little bit of shadow detail in the snow on the roof in the bottom left. I don't think that was the result of the polarising effect though. What it appears to be (to my untrained eye) is that the B+W seems to be costing a bit more light (perhaps 1/3 stop?). If this is the case, that's why the sky in the B+W example looks a bit darker? From the results, I'd favour Hoya. Perhaps try a few other shots? Maybe the cliche person through the windscreen of a car, or koi in a pond (unless you've got really lazy koi, it'll be hard to get them in the exact same position I reckon..), or maybe just a lake with some sky in it? Just some thoughts.
Regards, Ryan ----- Original Message ----- From: "Alan Chan" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, January 04, 2004 3:03 PM Subject: OT: Polarizer pictures, which is better, and why? > This has nothing to do with Pentax, but I reckon there are some experts here > might be able to tell the differences. I did 2 shots this afternoon with > identical setting just to see if there was any colour difference between > HOYA & B+W CPL. I turned the filters until they gave the deepest blue colour > possible. These shots were done with the Canon A80 because I do not have the > *ist D. Now called me naive, but I compared these 2 shots side by side at > 100% in Photoshop, and while there is some very slight colour difference > (could be due to the lack of precise angle of the CPLs), I would not be able > to determine which is better and found them equally good on my monitors. > Some comments I received from other forum suggested the HOYA one was > slightly "fogged", while another said he would buy B+W. What am I missing? > Why cannot I see the difference? I could "faked" their titles and tricked > people to believe the HOYA was B+W, and like vise, but I did not. I want > some honest opinion here. Anyone? > > HOYA Ultra CPL: > http://www.pbase.com/image/24771315 > > B+W CPL: > http://www.pbase.com/image/24771314 > > Regards, > Alan Chan > http://www.pbase.com/wlachan > > _________________________________________________________________ > The new MSN 8: smart spam protection and 2 months FREE* > http://join.msn.com/?page=features/junkmail > http://join.msn.com/?page=dept/bcomm&pgmarket=en-ca&RU=http%3a%2f%2fjoin.msn.com%2f%3fpage%3dmisc%2fspecialoffers%26pgmarket%3den-ca > >
