UV filter. Does anyone know.

[medwaygreen]

I have seen some UV filters that have in brackets LA+10 on the rim, can anyone tell me what this denotes, i have tried to find out, but to no avail.
Thank you.

 

[arclight]

Just tried to google it. Went round in circles.

 

[medwaygreen]

Just tried to google it. Went round in circles.

Me too.:shrug:

 

[leaky5]

These Hama filters have that written on them,

http://www.hama.de/portal/searchSel...36952/action*2563/searchMode*1/bySearch*la+10

the only mention of +10 is 'Mired value +10'

http://en.wikipedia.org/wiki/Mired

 

[hepburn]

http://en.wikipedia.org/wiki/Mired

it's colour temperature shift related.

edit: beaten to the post. lol.

 

[medwaygreen]

Thank you all very much, something more to read now.