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...
$3698 $2998
SAVE $700

$2397 $1897
SAVE $500

$1199 $898
SAVE $301

$1299 $1169
SAVE $130

$4499 $3999
SAVE $500

$1399 $1099
SAVE $300

$1499 $1299
SAVE $200

$4499 $3149
SAVE $1350

$2299 $1599
SAVE $700

$2498 $2198
SAVE $300

$1799 $1379
SAVE $420

$2998 $2498
SAVE $500

$1299 $1124
SAVE $175

$2199 $1999
SAVE $200

$430 $220
SAVE $210

$3399 $2299
SAVE $1100

$6299 $3599
SAVE $2700

$398 $278
SAVE $120

$1499 $1019
SAVE $480

$1279 $719
SAVE $560

$1699 $1549
SAVE $150

Shooting a New Lens — Focus

Thanks to LensRentals.com, I have the Leica 21mm f/1.4 Summilux-M ASPH and the 28mm f/2 Summicron-M ASPH available for comparisons and testing when I head to Death Valley soon.

Leica 21mm f/1.4 Summilux-M ASPH and Leica 28mm f/2 Summicron-M ASPH

Focus check

With the Leica M9, the VERY FIRST thing one should with a new lens is to verify accurate focus with the lens on your particular M9. Rangefinder focus is a mechanical coupling and there is no guarantee that it is correct for any particular lens/body combination, even if the lens is brand-new out of the box.

As I show in Rangefinder Focus Error With Brand-new Lens in my didactic and essential Making Sharp Images, the serious photographer cannot assume that a brand-new lens focuses accurately.

So the first thing I did with the two rental lenses was to verify focus accuracy, shooting both lenses wide open on 6-10 images at varying distance, then checking focus accuracy in Photoshop after downloading the images.

Always make a focus-accuracy test wide open, otherwise depth of field masks the error. Besides, what’s the point of a 21/1.4 or 28/2 lens speed if one doesn’t shoot wide open at least some of the time? And focus must be perfect at f/1.4 or f/2 or the image will be degraded, perhaps to throw-away status. With the Leica M9, I also stack the 1.25X and 1.4X viewfinder magnifiers to rule out any user error (my eye).

Crops below are actual pixels from the center of the frame. Focus was spot-on for these frames and my other test images, so the lenses are good to go for comparisons and testing.

The sharpness of the 18-megapixel images makes me lust after a 36-megapixel Leica M10 someday. Why not? The lenses can handle it, and Nikon has already proven that the sensor technology has arrived.

Actual pixels with Leica M9P + Leica 21mm f/1.4 Summilux-M ASPH @ f/1.4
Actual pixels with Leica M9P + Leica 28mm f/2 Summicron-M ASPH @ f/2

See also :


MacPerformanceGuide.com
View all handpicked deals...

Nikon AF-S NIKKOR 24-70mm f/2.8E ED VR Lens
$2397 $1897
SAVE $500

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.