Upgrade the memory of your 2019 iMac up to 128GB
Handpicked deals...
$2399 $2159
SAVE $240

$200 $160
SAVE $40

$1499 $1148
SAVE $351

$590 $472
SAVE $118

$1299 $997
SAVE $302

$1199 $1015
SAVE $184

$1480 $1230
SAVE $250

$3999 $2499
SAVE $1500

$1498 $1098
SAVE $400

$2897 $1797
SAVE $1100

$399 $349
SAVE $50

$899 $699
SAVE $200

$3297 $1897
SAVE $1400

$749 $499
SAVE $250

$799 $567
SAVE $232

$870 $749
SAVE $121

$3499 $2199
SAVE $1300

$3599 $2299
SAVE $1300

$4499 $2650
SAVE $1849

$748 $598
SAVE $150

$899 $699
SAVE $200

$799 $729
SAVE $70

$3599 $2299
SAVE $1300

$3499 $2199
SAVE $1300

$4499 $2650
SAVE $1849

$1997 $897
SAVE $1100

$3099 $2499
SAVE $600

$2799 $2199
SAVE $600

$4999 $4599
SAVE $400

$4499 $2650
SAVE $1849

New Mac Pro?

Or iMac 5K or iMac Pro?
Consult with Lloyd ASAP before buying!


System configuration for CPU, GPU, memory, SSD, backup, RAID, optimizing performance, workflow.
For YOUR optimal workflow

Avoid costly mistakes in throwing money at the problem for less performance and/or buying the wrong machine for your own needs!

Remote screen sharing available for RAID, software configuration, etc.

More about 2019 Mac Pro vs iMac 5K vs iMac Pro...

Zeiss Circular Polarizer

Last updated 2012-10-15 - Send Feedback
Related: filters, polarizer

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.

Buying filters

A great source for filters at competitive prices is B&H Photo, which has an extensive selection of brands and types and sizes.

See polarizer prices at B&H Photo.

In the field

As of 2012, I prefer the Zeiss polarizers over B+W because the rings don’t bind as do the B+W ones; I’ve had endless trouble with high-friction rings on B+W polarizers (requiring so much force to turn that they unscrew themselves!). The B+W ones also can be uneven in force required to turn them. The Zeiss polarizers are free of this problem.

Zeiss info

Zeiss POL filter

The Zeiss CZ circular polarizers were introduced in late 2011.

For photos that become revelations

Discover something new: the POL filters featuring the T* anti-reflective coating from Carl Zeiss provide you with entirely new photographic insights by avoiding reflections on non-metallic surfaces. Experience a new definition of color and contrast.

  • Precision — Rotary mount to set the filter effect (light reduction: 1.5–2 EV).
  • Quality — High-quality glass featuring Carl Zeiss T* anti-reflective coating.
  • Flexibility — High-fit accuracy for fast filter change. Can be used with a lens shade.
  • Compatibility — Ideal for ZEISS lenses. Can be used with non-ZEISS lenses.
  • Effect — Minimizes light reflections on non-metallic surfaces and increases the color saturation of long-distance shots
Zeiss UV and polarizer filter lineup

Spectral transmission —
Zeiss Circular Polarizer

Spectral transmission for Zeiss circular polarizer, as per Zeiss
Spectral transmission for Zeiss circular polarizer, as per Zeiss
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).



Our trusted photo rental store

View all handpicked deals...

SanDisk 512GB Extreme PRO UHS-I SDXC Memory Card
$200 $160
SAVE $40

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2019 diglloyd Inc, all rights reserved.