Latest or all posts or last 15, 30, 90 or 180 days.
Get up to 16x more storage and 2x the speeds of the original drive
Handpicked deals...
$200 $165
SAVE $35

$398 $248
SAVE $150

$4999 $4499
SAVE $500

$2199 $1999
SAVE $200

$2799 $2349
SAVE $450

$120 $80
SAVE $40

$3099 $2499
SAVE $600

$1998 $1298
SAVE $700

$249 $149
SAVE $100

$100 $60
SAVE $40

$2844 $2297
SAVE $547

$1099 $1019
SAVE $80

$899 $530
SAVE $369

$1199 $1099
SAVE $100

$1999 $1379
SAVE $620

$999 $949
SAVE $50

Zeiss Loxia 25mm f/2.4 Aperture Series: Mosaic (Sony A7R IV)

I’m kicking off my coverage of the Sony A7R IV by showing various lenses and their performance—good and bad—see Demands on Lens Performance with the Sony A7R IV are More Pronounced than I had Anticipated.

The Zeiss Loxia 25mm f/2.4 is one of the top few best of the 22 lens combinations I tested last night, but it has some field curvature behavior that is more important than ever to be aware of, that is, on a 60MP sensor.

....

This series evaluates the Zeiss Loxia 25mm f/2.4 on an extremely demanding target: a planar subject with exceedingly fine detail. Sony A7R IV 4-shot pixel shift was used to capture the best possible detail. This target is among the most demanding any lens can face, mercilessly showing most all lens weaknesses.

Field curvature is of particular interest because at 60MP, small deviations across the field are not so small, and stopping down past f/4 begins to degrade micro contrast from diffraction.

Zeiss Loxia 25mm f/2.4 Aperture Series: Mosaic (Sony A7R IV)

Includes images up to full camera resolution of 60 megapixels.

f4 @ 1/40 sec pixel shift, ISO 100; 2019-09-14 18:59:39
Sony A7R IV + Zeiss Loxia 25mm f/2.4 Distagon RAW: vignetting corrected, USM {8,50,0}

[low-res image for bot]

Save the tax, we pay you back, instantly!
View all handpicked deals...

Samsung 2TB T5 Portable Solid-State Drive (Black)
$398 $248
SAVE $150

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.