Latest or all posts or last 15, 30, 90 or 180 days.
Upgrade the memory of your 2019 iMac up to 128GB

Sigma 70mm f/2.8 Macro Aperture Series: Mosaic (Sony A7R IV)

Sigma 70mm f/2.8 Macro Aperture Series

This series evaluates the Sigma 70mm f/2.8 DG Macro from f/2.8 through f/8 on an extremely demanding target: a planar subject with exceedingly fine detail. This target is among the most demanding any lens can face, inexorably showing most all lens weaknesses.

Of keen interest here is focus shift, which is the kiss of death on a ~40MP sensor, let alone a 60MP sensor. When it happens in the central area of the frame, it is a serious problem.

Sigma 70mm f/2.8 Macro Aperture Series (Sony A7R IV)

Includes images from f/2.8 to f/8 at up to full camera resolution.

f8 @ 1/20 sec pixel shift, ISO 100; 2019-09-17 18:54:19
Sony A7R IV + Sigma 70mm f/2.8 DG Macro Art
RAW: LACA corrected, vignetting corrected, USM {8,50,0}

[low-res image for bot]

Deals Updated Daily at B&H Photo
View all handpicked deals...

Samsung Galaxy Note10 SM-N970U 256GB Smartphone (Unlocked, Aura Black)
$950 $750
SAVE $200

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2019 diglloyd Inc, all rights reserved.