Latest or all posts or last 15, 30, 90 or 180 days.
Welcome to
In-depth review coverage is by subscription.
Also by Lloyd: and
First-time visitor
Up to 1527MB/s sustained performance
🌈Shooting in Mountains thru ~Oct 27
I descend for internet service each day *when feasible*, but not always. Please be patient when subscribing. Hiking injured knee but cycling is therapeutic.

Sigma sd Quattro ISO Series from 100 to 6400, both X3F and Camera JPEG + Binned Images

Sigma sd Quattro
(APS-C sensor)

See my Sigma mirrorless wish list at B&H Photo.

This in-depth evaluation shows image quality from ISO 100 to ISO 6400 with natural daylight using an optimal exposure with ideal lighting, so it represents best-case performance:

  • From X3F raw files.
  • From in-camera JPEGs.
  • Includes a reference image from X3I SFD mode (7 frames, noiseless). X3I is always ISO 100 (ISO is not settable in X3I mode).
  • Images with binning enabled are also shown. Sigma Photo Pro enables Auto Binning by default (a good idea given the performance). Binning delivers reduced image sizes at ISO 800 on up in order to combat image noise.
Sigma Photo Pro
Auto Binning option

Includes images up to full camera resolution.

Sigma sd Quattro ISO Series from ISO 100 to ISO 6400

This pages/series should be extremely useful as a reference for any Sigma sd Quattro user, because it includes the full ISO series from both X3F raw and in-camera JPEG and binned versions from the X3F raw.

Below, Sigma sd Quattro ISO 3200 quality is severely degraded.

f7.1 @ 1/60 sec, ISO 3200; 2016-08-07 12:21:09
sd Quattro + SIgma 30mm f/1.4 DC HSM Art @ 45mm equiv (30mm)

[low-res image for bot]
Durable and fast, up to 1800MB/s
B&H Deal ZoneDeals by Brand/Category/Savings
Deals expire in 122 min unless noted. Certain deals may last longer.
$2699 SAVE $300 = 10.0% Canon 11-24mm f/4 EF L USM in Lenses: DSLR
$774 SAVE $222 = 20.0% $100 GIFT CARD Pentax 10x43 Z-Series ZD ED Binocular in All Other Categories
$1497 SAVE $400 = 21.0% $82 FREE ITEMS Pentax K-1 DSLR in Cameras: DSLR

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2008-2017 diglloyd Inc, all rights reserved.