Latest or all posts or last 15, 30, 90 or 180 days.
Memory Upgrades for 2019 Mac Pro - Save Up to 65% vs Factory Costs
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$130 $115
SAVE $15

$100 $25
SAVE $75

$200 $130
SAVE $70

$3498 $3198
SAVE $300

$2347 $1897
SAVE $450

$1297 $1097
SAVE $200

$597 $497
SAVE $100

$2297 $1997
SAVE $300

$699 $499
SAVE $200

$60 $40
SAVE $20

$1699 $1199
SAVE $500

$950 $950
SAVE $0

$1997 $1097
SAVE $900

$1499 $1379
SAVE $120

$400 $400
SAVE $0

$372 $247
SAVE $125

$9999 $2999
SAVE $7000

$4500 $3500
SAVE $1000

$1000 $500
SAVE $500

$1398 $898
SAVE $500

$799 $799
SAVE $0

$935 $549
SAVE $386

$309 $259
SAVE $49

$1300 $900
SAVE $400

$450 $280
SAVE $170

$1499 $1249
SAVE $250

$700 $600
SAVE $100

$2000 $1270
SAVE $730

$1499 $779
SAVE $720

$450 $120
SAVE $330

$249 $240
SAVE $9

$3998 $3498
SAVE $500

$150 $80
SAVE $70

$369 $175
SAVE $194

$1699 $1199
SAVE $500

$649 $449
SAVE $200

$1498 $998
SAVE $500

$999 $949
SAVE $50

$1099 $999
SAVE $100

$400 $300
SAVE $100

$2399 $2199
SAVE $200

$3399 $2199
SAVE $1200

$7697 $4997
SAVE $2700

Kolarivision Sony A7R II with Leica M Lenses: Coming Soon

See previous coverage on the Kolarivision modifications to Sony mirrorless to deliver far superior performance with Leica M lenses. This coverage has been, and will be in Guide to Leica because lens performance is always covered in the native guide. But as before, I’ll likely show some examples elsewhere

Coming soon is a Kolarivision-modified Sony A7R II in which the sensor cover glass has been replaced by glass the same thickness as the Leica M (sensor cover glass still has negative effects even on a a Leica M240, but far less than the thick glass as shipped with Sony mirrorless).

My intent is to compare an unmodified Sony A7R II to a modified modified version, using various wide angle lenses as well as the Leica 50mm f/2 APO-Summicron-M ASPH (which is impaired until at least f/5.6 on a stock Sony, even though it is a 50mm lens). However, a trip to Germany very soon for a special event may delay it by a week or so.

Note well the absurdity being bandied about on internet that the new sensor in the Sony A7R II can somehow undo astigmatism caused by the thick sensor cover glass. Such claims are an exercise in optical ignorance—never mind optical facts. However, the new Sony A7R II sensor is far superior for color shading.

For an example of just how severe the quality losses can be, see the MTF series and through-focus MTF for the world-class Zeiss ZM 35mm f/1.4 Distagon (courtesy of Zeiss)—its world-class performance rendered mediocre by thick sensor cover glass. A jewel into paste glass, just because of the sensor cover glass (until stopped down to f/8 or more).

See also:


Our trusted photo rental store
View all handpicked deals...

Sony 256GB SF-M Tough Series UHS-II SDXC Memory Card
$130 $115
SAVE $15

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2020 diglloyd Inc, all rights reserved.