Latest or all posts or last 15, 30, 90 or 180 days.
Upgrade the memory of your 2018 Mac mini up to 64GB
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$399 $199
SAVE $200

$2797 $2497
SAVE $300

$1398 $998
SAVE $400

$1499 $999
SAVE $500

$549 $499
SAVE $50

$799 $549
SAVE $250

$1699 $949
SAVE $750

$3899 $1499
SAVE $2400

$999 $999
SAVE $click

$1398 $998
SAVE $400

$1798 $1198
SAVE $600

$240 $175
SAVE $65

$240 $175
SAVE $65

$1399 $799
SAVE $600

$1798 $1198
SAVE $600

$1997 $1797
SAVE $200

$3399 $2699
SAVE $700

$400 $300
SAVE $100

$1699 $949
SAVE $750

$1199 $1099
SAVE $100

$1199 $1099
SAVE $100

$999 $949
SAVE $50

$1699 $949
SAVE $750

Thunderbolt 4 Dock

Thunderbolt 4 hub and ports!

Any Mac with Thunderbolt 3.


Caldwell Photographic UV-IR 120mm f/4.5 APO macro

Technical camera users will soon have available what is one of the most highly corrected and high performing lenses ever made available commercially— the Caldwell Photographic 120mm f/4.5 Macro UV-IR Apochromat. The new lens is designed by Brian Caldwell, optical designer of the Coastal Optics 60mm f/4 UV-VIS-IR APO macro.

The lens design utilizes 9 elements in 7 groups. Six of them are special low dispersion (ED) glass, and the rear element is aspheric. The lens focuses to 1:1 on medium format, with a 70mm image circle wide open. Makes me want to run out and get a view camera and digital back!

The lens is so highly corrected that focusing can be done in visible light with no correction whatsoever for ultraviolet or infrared from 320nm through 1100nm. This is critical for the intended scientific, multi-spectral and forensic purposes. That same correction means that there is absolutely no violet fringing (purple fringing eg axial chromatic aberration). My experience with the Coastal Optics 60/4 tells me that such correction results in a uniquely transparent look to the images, with stunning color rendition.

Caldwell Photographic 120mm f/4.5 Macro UV-IR Apochromat
Exotic optical design of the 120mm f/4.5 Macro UV-IR Apochromat

The MTF chart is extraordinary. The line pairs charted include 10/20/40 and 80 (eighty) line pairs per mm. What is astonishing about the 80 line pairs/mm lines is that they are better than many lenses can show at 40 line pairs/mm. You’re not likely to see higher performance from any lens. It’s also an f/4.5 lens, which makes it more flexible than some of the f/5.6 alternatives.

MTF (visible spectrum) of the 120mm f/4.5 Macro UV-IR Apochromat @ f/5.6
OWC Envoy Pro Elektron

Ultra-high performance across entire capacity, outperforms the competition.

Tiny, bus-powered, rugged, compact!


√ No more slow and noisy hard drives!

Best Deals, Updated Weekly

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2021 diglloyd Inc, all rights reserved.