Latest or all posts or last 15, 30, 90 or 180 days.
2024-03-18 22:44:25
Designed for the most demanding needs of photographers and videographers.
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$3399 $2999
SAVE $400

$2997 $2997
SAVE $click

$348 $248
SAVE $100

$999 $699
SAVE $300

$5999 $4399
SAVE $1600

$1049 $879
SAVE $170

$4499 $3499
SAVE $1000

$999 $849
SAVE $150

$999 $799
SAVE $200

$5999 $4399
SAVE $1600

$799 $699
SAVE $100

$1199 $899
SAVE $300

$1099 $899
SAVE $200

$348 $248
SAVE $100

$1602 $998
SAVE $604

$3399 $2999
SAVE $400

$3997 $3697
SAVE $300

$5999 $4399
SAVE $1600

$1397 $997
SAVE $400

Focus Shift — Why So Much Coverage?

Because focus shift is by far the most important lens behavior in determining sharpness as a practical matter for real images, with field curvature running a close second in terms of across-the-frame sharpness.

Focus shift and what to do about it are investigated in Making Sharp Images.

Now I’m not talking about the contrast of a 18-200mm f/crap - f/crappier zoom against a prime lens— I’m talking about a good quality prime lens of any brand— Nikon, Canon, Zeiss, Leica. They’re all very good, but many factors are at play in total quality, and focus shift is at the top of my list for practical consideration in making sharp images in the field.

This is especially true with higher resolution cameras like the Nikon D800E, but it holds true at 22 megapixels and 12 megapixels, far more than most photographers realize (“focus is off” = no idea what’s really going on).

And so focus shift deserves a great deal of coverage with every brand. Expect to see my Guide to Zeiss ZF / ZE Lenses grow in this regard (using the Nikon D800E of course), as well as coverage in DAP for Nikon and Canon and Olympus 4/3, and in my Guide to Leica as well.

Is this the kind of sharpness on the eyes you want? At f/4 where they should be bitingly sharp?

Blurred eyes, due to focus shift with f/1.4 lens

View all handpicked deals...

Nikon Z7 II Mirrorless Camera
$2997 $2997
SAVE $click

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | X.com/diglloyd
Copyright © 2022 diglloyd Inc, all rights reserved.