It's a Kenko amber colour balancing filter (warm up)
L - possibly means Light
B - possibly means Balancing
W - possibly means Warm
4 - possibly the strength
Good guessThis one?
http://cgi.ebay.co.uk/KENKO-55mm-LB...temQQimsxq20100120?IMSfp=TL100120235001r30522
But I'm guessing that W stands for Wratten and it's for balancing tungsten film in daylight. A minority pursuit at the best of times.
Good guessThis one?
http://cgi.ebay.co.uk/KENKO-55mm-LB...temQQimsxq20100120?IMSfp=TL100120235001r30522
But I'm guessing that W stands for Wratten and it's for balancing tungsten film in daylight. A minority pursuit at the best of times.