Latest or all posts or last 15, 30, 90 or 180 days.
Welcome to
In-depth review coverage is by subscription.
Also by Lloyd: and
First-time visitor
Capacities up to 48TB and speeds up to 1527MB/s
🌈Shooting in Mountains thru ~Oct 27
I descend for internet service each day *when feasible*, but not always. Please be patient when subscribing. Hiking injured knee but cycling is therapeutic.

Sony G Master 85mm f/1.4 Focus Accuracy on Sony A7R II with Firmware 3.1

Get Sony G Master Lens at B&H Photo.

Sony 85mm f/1.4 GM

A few days ago, I showed focus error with the Sony 85mm f/1.4 GM on the Sony A7R II. That was with firmware 3.0, with version 3.1 recommended with the 85/1.4 GM.

But it seems the firmware version has nothing to do with problematic performance.

Using the Sony A7R II with the very latest firmware (version 3.1), I put focusing to the test under controlled conditions in which every effort was made to help the camera succeed.

Focus Accuracy at f/1.4 and f/4, Controlled Conditions (Dolls)

Shot at two different distances and at both f/1.4 and f/4 to confirm the findings.

I prefer my images as sharp as the lens can deliver, which is why I do all my evaluation work with manual focus whenever feasible, which is almost always.

So we can forgive some error at f/1.4 (but on mirrorless?!), but what about f/4 too?

Comparing autofocus and manual focus


Durable and fast, up to 1800MB/s
B&H Deal ZoneDeals by Brand/Category/Savings
Deals expire in 8 hours unless noted. Certain deals may last longer.
$2699 SAVE $300 = 10.0% $38 FREE ITEMS Canon 11-24mm f/4 EF L USM in Lenses: DSLR
$774 SAVE $222 = 20.0% $100 GIFT CARD Pentax 10x43 Z-Series ZD ED Binocular in All Other Categories

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2008-2017 diglloyd Inc, all rights reserved.