Latest or all posts or last 15, 30, 90 or 180 days.
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$300 $175
SAVE $125

$999 $799
SAVE $200

$2798 $2198
SAVE $600

$348 $278
SAVE $70

$389 $299
SAVE $90

$2098 $1298
SAVE $800

$1479 $1079
SAVE $400

$322 $242
SAVE $80

$1479 $1079
SAVE $400

$330 $330
SAVE $click

$498 $398
SAVE $100

$180 $140
SAVE $40

$500 $275
SAVE $225

$180 $136
SAVE $44

$130 $100
SAVE $30

$2997 $2497
SAVE $500

$3498 $2998
SAVE $500

$370 $370
SAVE $click

$4899 $4499
SAVE $400

$1000 $1000
SAVE $click

$1699 $1149
SAVE $550

$280 $230
SAVE $50

$1899 $1499
SAVE $400

$4499 $3499
SAVE $1000

$2198 $1998
SAVE $200

$3998 $3498
SAVE $500

$1799 $1699
SAVE $100

$18599 $16599
SAVE $2000

$1149 $799
SAVE $350

$650 $450
SAVE $200

$199 $119
SAVE $80

$280 $200
SAVE $80

$1399 $1049
SAVE $350

$1199 $779
SAVE $420

$250 $200
SAVE $50

$1699 $1149
SAVE $550

$195 $125
SAVE $70

$79 $49
SAVE $30

$120 $30
SAVE $90

$189 $159
SAVE $30

$3699 $1299
SAVE $2400

$3899 $1499
SAVE $2400

$2999 $1999
SAVE $1000

$1699 $849
SAVE $850

$1698 $1198
SAVE $500

$1149 $799
SAVE $350

$1399 $1049
SAVE $350

$1498 $998
SAVE $500

$2797 $2497
SAVE $300

$280 $230
SAVE $50

$700 $500
SAVE $200

$899 $549
SAVE $350

$1699 $1149
SAVE $550

Upgrade the memory of your 2020 iMac up to 128GB
B&H Photo Cyber Monday Deals

Photo, video, television, far more!.
OWC Cyber Monday Deals

Upgrades, sound, iPad/iPhone, computing, storage, more!

Sony A7R: ISO Performance

In Guide to Mirrorless is published a study of A7R image quality from ISO 50 through ISO 25,600. And also implicitly, dynamic range.

The scene chosen is a difficult one for any camera to handle (contrast and lighting skewed toward blue, though not nearly as challenging as spiky or extreme spectrum from many artificial lights, e.g., mercury vapor or strongly red tungsten lighting).

Noise behavior under perfect daylight or studio lighting is of modest relevance to many situations in which higher ISO is needed; all cameras can be made to look relatively good under ideal lighting. What matters to me in the field is how a camera handles real-world lighting, particularly the blue light of dusk and dawn and similar. And whether it can withstand a push or shadow boost. In that regard, a full-frame camera reigns supreme (short of medium format).

Creek at dusk
Sony Alpha A7R with Sony/Zeiss FE 35mm f/2.8 Sonnar ZA @ f/8
OWC Envoy Express

World’s first Thunderbolt 3 M.2 NVME SSD enclosure.

Super fast, bus-powered, 3.3 oz, DIY easy, rugged and compact!


See also OWC Express 4M2
√ No more slow and noisy hard drives!
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!

Best Deals, Updated Weekly
View all handpicked deals...

Apple 13.3" MacBook Air with Retina Display (Early 2020, Space Gray)
$999 $799
SAVE $200

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.