Upgrade the memory of your 2020 iMac up to 128GB
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$7999 $7249
SAVE $750

$2799 $2599
SAVE $200

$250 $225
SAVE $25

$399 $269
SAVE $130

$1199 $1099
SAVE $100

$799 $599
SAVE $200

$999 $949
SAVE $50

$1099 $999
SAVE $100

$1999 $1499
SAVE $500

$1349 $1149
SAVE $200

$1099 $1029
SAVE $70

$2799 $2549
SAVE $250

$449 $389
SAVE $60

$400 $310
SAVE $90

$1699 $999
SAVE $700

Filter—B+W 091 Deep Red

Last updated 2010-01-09 - Send Feedback
Related: filters, spectral transmission

Graphs are in nanometers. Visible light is approximately 390 - 650 nm (the human eye can see very weakly into the 700-800nm range). Graphs used by permission of Coastal Optical System.

Buying filters

A great source for filters at competitive prices is B&H Photo. Get filters at B&H Photo.

Spectral transmission — B+W 091 dark red

The B+W 091 filter has a real benefit with some EOS cameras converted for infrared use; see the diglloyd Guide to Digital Infrared for details and examples. Get the B+W 091 infrared filter at B&H Photo.

B+W 091 dark red filter

Save the tax, we pay you back, instantly!

View all handpicked deals...

Apple 16" MacBook Pro (Late 2019, Silver)
$2799 $2599
SAVE $200

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2020 diglloyd Inc, all rights reserved.