Latest or all posts or last 15, 30, 90 or 180 days.
Upgrade the memory of your 2018 Mac mini up to 64GB
Handpicked deals...
$1999 $1399
SAVE $600

$1399 $1399
SAVE $0

$999 $949
SAVE $50

$3998 $3498
SAVE $500

$569 $469
SAVE $100

$249 $214
SAVE $35

$600 $279
SAVE $321

$1299 $999
SAVE $300

$3899 $3499
SAVE $400

$1498 $1198
SAVE $300

$2299 $1599
SAVE $700

$1598 $1598
SAVE $0

$5500 $5000
SAVE $500

$2600 $2100
SAVE $500

$2798 $2798
SAVE $0

$1299 $950
SAVE $349

$1999 $1399
SAVE $600

$1299 $1124
SAVE $175

$2299 $1799
SAVE $500

$1299 $999
SAVE $300

$3397 $2697
SAVE $700

$3297 $2797
SAVE $500

$1999 $1199
SAVE $800

$3399 $2199
SAVE $1200

$400 $300
SAVE $100

Apple MacBook Pro 16"

Most Powerful MacBook Pro ever!.

CLICK THIS AD to pre-order. !

Review planned, consult with Lloyd on what to buy!


√ B&H Photo PAYS THE SALES TAX FOR YOU More info...

Leica 16-35mm f/3.5-4.5 Super-Vario-Elmar-SL ASPH: Assessing Distortion at 16mm, 25mm, 28mm, 35mm, plus MTF

See my L-mount mirrorless wishlist

The Leica 16-35mm f/3.5-4.5 Super-Vario-Elmar-SL ASPH relies on software correction for distortion, including a jaw-droppingly huge amount at the 16mm setting—perhaps taking a cue in optical design from the extreme distortion of the Leica Q.

Distortion correction required for
Leica 16-35mm f/3.5-4.5 Super-Vario-Elmar-SL ASPH

The degrading effects of distortion correction in both single shot mode and especially Multi-Shot High-Res mode are well worth understanding for anyone thinking of high resolution capture.

I take a close look at distortion and the effects of distortion correction in diglloyd L-Mount Mirrorless:

Distortion correction relates directly to MTF: I also discuss MTF in depth, noting two points that make the Leica MTF charts misleading at best:

MTF for Leica 16-35mm f/3.5-4.5 Super-Vario-Elmar-SL ASPH

I’m stunned that an about $5500 lens with an exceptionally dark f/3.5 to f/4.5 maximum aperture relies upon sharpness-robbing distortion correction to combat extreme distortion at 16mm that seems more fitting for a consumer-grade APS-C kit lens.

Below, the uncorrected distortion at 16mm with the Leica 16-35mm f/3.5-4.5 Super-Vario-Elmar-SL ASPH. Image processed with Iridient Developer, which allows raw conversion with or without “mandatory” distortion correction—Adobe Camera Raw in either Photoshop or LIghtroom provides no option to disable correction for built-in lens profiles (those that the camera writes into the EXIF).

Uncorrected distortion at 16mm
f8 @ 1/4 sec Multi-Shot HighRes, ISO 50; 2019-04-18 19:28:37
Panasonic S1R + Leica Super-Vario-Elmar-SL 16-35mm f/3.5-4.5 ASPH @ 16mm

[low-res image for bot]

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

Sigma 14-24mm f/2.8 DG DN Art Lens for Sony E
$1399 $1399
SAVE $0

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.