09-03-2010, 12:29 PM
(This post was last modified: 09-03-2010, 12:30 PM by Brightcolours.)
[quote name='miro' timestamp='1283511570' post='2446']
Hello,
After unfrequent use of circular polarizers I discovered that my two Hoya CPL have some scratches at front side . At the same time I don’t have any scratches on all my lenses equipped with different brands of UV filters.
I have
1. Hoya 52mm HMC circular polarizer - green label
2. Hoya 77mm Pro1-Digital - blue label. I have some doubt about this filter /maybe fake/.
My question are
1. Where is located the polarizing film on Hoya filters?
a. front side of the glass
b. back side of the glass
c. between two glasses as B+W
2. Should I handle CPL filters with extra special care? /since I don’t have any scratches at my lenses and UV filters./
3. How durable are other brands of CPL. E.g. B+W or Helioplan?
Thanks in advance
Miro
[/quote]
I do not use any UV filters on any of my lenses, and none have scratches on the front element. My 67mm B&W circular pol. filter has no scratches, so I guess it must be that the Hoya coatings just are not very hard.
My Hama 77mm circ. pol. filter also has no scratches. I thought that Hama filters were actually Hoya made, though... But i also do not use that filter a lot. My Toshiba linear pol. filter also has no scratches.
The pol. film is sandwiched between glass, as far as I know (with all brands), you can not touch it.
Hello,
After unfrequent use of circular polarizers I discovered that my two Hoya CPL have some scratches at front side . At the same time I don’t have any scratches on all my lenses equipped with different brands of UV filters.
I have
1. Hoya 52mm HMC circular polarizer - green label
2. Hoya 77mm Pro1-Digital - blue label. I have some doubt about this filter /maybe fake/.
My question are
1. Where is located the polarizing film on Hoya filters?
a. front side of the glass
b. back side of the glass
c. between two glasses as B+W
2. Should I handle CPL filters with extra special care? /since I don’t have any scratches at my lenses and UV filters./
3. How durable are other brands of CPL. E.g. B+W or Helioplan?
Thanks in advance
Miro
[/quote]
I do not use any UV filters on any of my lenses, and none have scratches on the front element. My 67mm B&W circular pol. filter has no scratches, so I guess it must be that the Hoya coatings just are not very hard.
My Hama 77mm circ. pol. filter also has no scratches. I thought that Hama filters were actually Hoya made, though... But i also do not use that filter a lot. My Toshiba linear pol. filter also has no scratches.
The pol. film is sandwiched between glass, as far as I know (with all brands), you can not touch it.