Latest or all posts or last 15, 30, 90 or 180 days.
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$4499 $3499
SAVE $1000

$249 $219
SAVE $30

$1398 $898
SAVE $500

$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

$2798 $2798
SAVE $click

$1199 $1099
SAVE $100

Upgrade the memory of your 2020 iMac up to 128GB
Organic Lab Tested Full Spectrum CBD

20% off every day with coupon code diglloyd20 at NuLeafNaturals.com

Updated formula with more CBD!
100% organic non-GMO, no additives or preservatives, lab tested for purity and quality.

Sigma 24-70mm f/2.8 DG HSM Art Aperture Series @ 24mm: Alabama Hills Rainstorm Creek (Nikon D850)

See my Sigma SLR lenses wishlist at B&H Photo.

This aperture series at distance shows the performance the Sigma 24-70mm f/2.8 DG HSM Art at 70mm from f2.8 through f/11.

This series is shown reluctantly, mainly for confirmation of the very poor performance seen at the other focal lengths: badly blurred edges. Here at 70mm it is at its worst.

Sigma 24-70mm f/2.8 DG HSM Art Aperture Series @ 70mm: Alabama Hills Alabama Hills View to Snow-Covered White Mountains

Includes images from f/2.8 through f/11 along at up to full camera resolution.

Companies that allow seriously out of whack lenses to ship to customers deserve scorn as it does serious damage to a photographer’s work: my reward for all the hours spent in non-repeatable rare conditions is crap-grade images. There is no recovery from that. I cannot go back and repeat a once-a-year storm conditions, the snow way down the mountains slopes, water in the dry creekbed, etc. All of the material I shot is damaged by this poor performance. Shame on Sigma for letting a sample like this ship to customers.

This image is not my favorite at all, but it shows the poor performance well.

Alabama Hills view to Snow-Covered White Mountains
f8 @ 1/80 sec, ISO 64; 2019-03-06 13:06:20
NIKON D850 + Sigma 24-70mm f/2.8 DG HSM Art @ 70mm

[low-res image for bot]

James K writes:

Your Sigma 24-70mm shot is not even iPhone quality. What a piece of junk. What a waste of your valuable time. I just returned 3 copies of their 16mm f/1.4 MFT lenses because they couldn’t auto focus accurately. One of the copies was sent to me directly from Sigma and that lens had such poor quality at f/1.4 and f/2 that I could’t believe my eyes. Pure crap, worse than your 24-70mm by a mile.

Sigma quality control is terrible. I will not buy any of their products again.

DIGLLOYD: well, I won’t go that far (“iPhone quality”). But shooting raw/DNG on the iPhone delivers hugely better results than the garbage that Apple’s JPEGs provide.

I wonder what is going on with Sigma quality control. I had not had such troubles with many Sigma DG HSM Art lenses. James K has had a lot of trouble recently.

Jason W writes:

So the 24-70 2.8 DG HSM sample here is clearly atrocious, but how would you characterize Sigma's general quality control versus Nikon, Canon or Fuji?

With the Fujifilm GFX, you had a 110mm sample that was even worse than what we're seeing here and I rarely hear complaints about their lenses. I worry some might throw the baby out with the bathwater, as Sigma has loads of word class glass.

DIGLLOYD: I’ve had very good luck with Sigma DG HSM Art lenses to date. I actually went and shot some test series with the Zeiss Milvus 25mm f/1.4 to rule out some kind of Nikon D850 camera sensor alignment issue, because the Sigma 28m f/1.4 DG HSM Art was also off a bit and the Sigma 70-200mm f/2.8 DG HSM Sports needs a lot of stopping down. I could find no issue at all with the Milvus 25/1.4, which establishes the camera as OK. I don’t know what to think at this point.

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


Ideal for Lightroom, Photoshop, video.
Capacity up to 16TB!

MacPerformanceGuide.com
View all handpicked deals...

Pentax 8x42 S-Series SD WP Binoculars
$249 $219
SAVE $30

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.