Upgrade the memory of your 2019 iMac up to 128GB
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$600 $450
SAVE $150

$1149 $799
SAVE $350

$580 $320
SAVE $260

$1699 $1199
SAVE $500

$1799 $1379
SAVE $420

$799 $299
SAVE $500

$15199 $13699
SAVE $1500

$7995 $7495
SAVE $500

$1299 $1099
SAVE $200

$700 $500
SAVE $200

$764 $399
SAVE $365

$290 $250
SAVE $40

$169 $99
SAVE $70

$370 $300
SAVE $70

$200 $170
SAVE $30

$250 $235
SAVE $15

$3899 $3699
SAVE $200

$2799 $2499
SAVE $300

$1199 $999
SAVE $200

$1799 $1379
SAVE $420

$2999 $2399
SAVE $600

$18599 $17099
SAVE $1500

$420 $170
SAVE $250

$1499 $649
SAVE $850

$1499 $649
SAVE $850

$420 $170
SAVE $250

$369 $239
SAVE $130

$1699 $1399
SAVE $300

$1498 $998
SAVE $500

$999 $949
SAVE $50

$1099 $999
SAVE $100

$250 $250
SAVE $click

Filter—B+W 415 and 420 UV Cut

Last updated 2010-11-10 - Send Feedback
Related: filters, spectral transmission, video

Spectral transmission graphs on this page were measured by Coastal Optical Systems on their equipment using single samples of the specified filters. Graphs used by permission.

Graphs are in nanometers. Visible light is approximately 390 - 650 nm (the human eye can see very weakly into the 700-800nm range).

Buying filters

A great source for filters at very competitive prices is our trusted sponsor, B&H Photo.

Get filters at B&H Photo.

Spectral transmission — B+W 415 and B+W 420 UV cut.

See also the Schneider B+W filter handbook.

The B+W 415 has a faint yellow tint, and blocks all UV light, and a trace of violet light (hence the pale yellow color). It is a very strong UV filter.

The B+W 420 is even stronger thant the B+W 415, and cuts off visible violet light as well.

This filter is special order.

Get the B+W 415 filter at B&H Photo.

Get the B+W 420 filter at B&H Photo.

B+W 415, 420 and other filters spectral transmission
Save Big $$$$ on Memory for 2019 Mac Pro

Up to 65% better pricing than Apple

Lloyd recommends 32GB RDIMM modules for most users (more expensive LRDIMMS are for 512GB or more).


OWC Accelsior 4M2 PCIe SSD
6000 MB/sec!
Mac or PC.


Ideal for Lightroom, Photoshop, video.
Capacity up to 16TB!
OWC Thunderblade Thunderbolt 3 SSD

Blazing fast, up to 16TB.

YEE HAH!



√ No more slow and noisy hard drives!
OWC Envoy Pro EX SSD
Blazingly fast Thunderbolt 3 SSD!

Up to 4TB capacity, USB-C compatible.

USB-C model also available


Great for travel or for desktop!

Best Deals, Updated Weekly

View all handpicked deals...

Apple iPad Pro 12.9" (64GB, Wi-Fi + 4G LTE, Space Gray, Previous Gen)
$1149 $799
SAVE $350

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.