Latest or all posts or last 15, 30, 90 or 180 days.
Upgrade the memory of your 2020 iMac up to 128GB
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$4499 $3499
SAVE $1000

$1398 $898
SAVE $500

$649 $449
SAVE $200

$7595 $5995
SAVE $1600

$799 $499
SAVE $300

$2598 $2398
SAVE $200

$700 $500
SAVE $200

$1498 $1398
SAVE $100

$249 $219
SAVE $30

$1699 $1349
SAVE $350

$21999 $19999
SAVE $2000

$8399 $7599
SAVE $800

$1149 $799
SAVE $350

$260 $180
SAVE $80

$4998 $3998
SAVE $1000

$569 $519
SAVE $50

$899 $799
SAVE $100

$2347 $1997
SAVE $350

$883 $633
SAVE $250

$1299 $949
SAVE $350

$1699 $1349
SAVE $350

$1199 $1099
SAVE $100

Sigma 12-24mm f/4 DG HSM Art Aperture Series: Two Aspen (Nikon D810)

Sigma 12-24mm f/4 DG HSM Art

Get Sigma 12-24mm f/4 DG HSM Art and Sigma DG HSM Art lenses at B&H Photo.

See my reviews of Sigma DG HSM Art lenses at 20mm, 24mm, 35mm, 50mm and more.

This aperture series from f/4 through f/11 is an an exceptional demonstration of wild and whacky field curvature and focus shift, yet with outstanding image quality if one is willing to accept and work with these behaviors in the field. Tips for field use follow in the conclusions.

Depth of field tables are useless fantasy for a lens like the Sigma 12-24mm f/4 DG HSM Art. Image quality in practice depends strongly on focus placement in a scene and how that is optimal for the subject matter, which must also take lens behavior into account.

In my review of the Sigma 12-24mm f/4 DG HSM Art in DAP:

Sigma 12-24mm f/4 DG HSM Art Aperture Series: Two Aspen

Includes images up to 28 megapixels along with many large crops, all from f/4 through f/11.

Especially at 36MP on up, the photographer must place focus wisely for the subject matter, not just the “1/3 in” rule and not even just the near/far relationships, but also anticipating and compensating for a lens with focus shift and field curvature, which requires special care based on the shooting aperture.

Two Aspen with View of Lundy Canyon and Peaks
f9 @ 1/80 sec, ISO 64; 2016-11-16 10:07:28
NIKON D810 + 12.0-24.0 mm f/4.0

[low-res image for bot]
OWC Accelsior 4M2 PCIe SSD
6000 MB/sec!
Mac or PC.


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

Blazing fast, up to 16TB.

YEE HAH!



√ No more slow and noisy hard drives!

Our trusted photo rental store
View all handpicked deals...

Sony Alpha a7 II Mirrorless Digital Camera (Body Only)
$1398 $898
SAVE $500

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.