Latest or all posts or last 15, 30, 90 or 180 days.
Welcome to diglloyd.com
In-depth review coverage is by subscription.
Also by Lloyd: MacPerformanceGuide.com and WindInMyFace.com
First-time visitor

SAVE $1000 Apple 15.4" MacBook Pro with To…

$466 FREE ITEMS SAVE $1100 Nikon D750 DSLR with 24-120mm
$556 FREE ITEMS SAVE $800 Nikon D810 DSLR with 24-120mm
$468 FREE ITEMS SAVE $470 Nikon D500 DSLR with 16-80mm
$61 FREE ITEMS SAVE $570 Nikon D7500 DSLR with 16-80mm
SAVE $40 Samsung 500GB T5 Portable Solid…
SAVE $50 Samsung 2TB 860 EVO SATA III 2.…
SAVE $2500 Hasselblad X1D-50c Medium Forma…
SAVE $3500 Hasselblad X1D-50c Medium Forma…
SAVE $3500 Hasselblad X1D-50c 4116 Edition…
SAVE $350 Z CAM E1 Mini 4K Interchangeabl…
SAVE $100 Sigma sd Quattro H Mirrorless
SAVE $100 Sony a5100 Mirrorless (Black, B…
SAVE $400 Sony a7R II Mirrorless
NEW! SAVE $100 ZEISS 18mm f/2.8 Bati…
SAVE $1251 ZEISS 15mm f/2.8 Distagon T* ZF…
SAVE $623 ZEISS 135mm f/2 Apo Sonnar T* Z…
$37 FREE ITEMS SAVE $100 Sony DSC-RX100 III
SAVE $200 Sony a7R III Mirrorless
NEW! SAVE $100 ZEISS 18mm f/2.8 Bati…
SAVE $1251 ZEISS 15mm f/2.8 Distagon T* ZF…
SAVE $623 ZEISS 135mm f/2 Apo Sonnar T* Z…
SKU FUGFX50S32L
SKU FUGFX50S45L
SKU FUGFX50S63L
SAVE $300 Sony 24-70mm f/4 Vario-Tessar T…
$20 FREE ITEMS SAVE $450 Canon EOS 77D DSLR with 18-135m…
SAVE $400 Olympus OM-D E-M1 Mark II Mirro…
SKU SOA7R324704K
$466 FREE ITEMS SAVE $500 Nikon D750 DSLR
SAVE $100 Sigma 30mm f/1.4 sd Quattro Mir…
SAVE $100 Sony a6000 Mirrorless Body
$9 FREE ITEMS SAVE $160 Steiner 8x32 XC Binocular
DZ SAVE $80 Interfit F5 Two-Head Fluores…
DZ SAVE $15 GOgroove BlueSYNC TYM Blueto…
DZ SAVE $240 ONA Chelsea Camera Bag
View all 36 deals…

Durable and fast, up to 1800MB/s

Update on Nikon D850 Flange Focal Distance

Get Nikon D850 at B&H Photo and see my Nikon wishlist.

See my growing review of the Nikon D850—to expand over time.

My Nikon D850 has been back for a while from Nikon service, but because of the Fujifilm GFX + 45/2.8 + Sony A7R III plus a miserably stressful and enervating 3 days of evaluating health care for 2018*, I have not had time to verify all aspects of its flange focal distance behavior, nor to carefully evaluate the symmetry corner to corner.

* That health-care plan evaluation time cut out my field work by 3 days, a great source of frustration being perfectly positioned with ideal weather conditions, but it could not be put off due to the Dec 15 “open enrollment” deadline.

I have nothing but terse notes on the repair slip from Nikon, which turned around my D850 in one day, which I appreciate as excellent service. As for the issues I raised, I do not expect that any comment or clarification from Nikon on any of these concerns will be forthcoming, as I predicted last month—unfortunate, but I’m “moving on”.

But here is one thing I can state clearly: I see no change in the flange focal distance at 24°F; the Zeiss 18/2.8 has scarcely 0.5mm of focus throw left at that frigidity (way past the infinity mark), just as I reported last month, and, also, an authority of impeccable credentials confirms my findings but I cannot name or quote that expert here, regrettably.

Things are what they are. As the D850 has so far not prevented me from getting to infinity focus (except perhaps in the mid zones for the 55/1.4 Otus), I am going to move on and accept the behavioral change. (which is not to say I will let the matter rest if and when I gain more insight).

The D850 is a very fine camera clearly a step up from the Nikon D810 in most all respects. As I’ve said before, I consider the D850 the finest DSLR ever produced, in haptics/ergonomics and image quality, excepting the too-small 4-way controller which makes use with medium-weight gloves difficult.

One more point for those shooting old Nikkors and the like: have no concern.

The infinity focus issue (flange focal offset distance) appears to be provoked by lenses having outstanding correction for color, which means special types of glass that are sensitive in refraction characteristics to temperature. Older lenses have little or no such glass, so breathe easy if that is the concern. Wider focal lengths with high degree of color correction seem particularly susceptible, longer ones less (e.g., 100mm or 135mm).

Durable and fast, up to 1800MB/s
B&H Deal ZoneDeals by Brand/Category/Savings
Deals expire in 17 hours unless noted. Certain deals may last longer.
$1049 SAVE $450 = 30.0% $20 FREE ITEMS Canon EOS 77D DSLR with 18-135mm USM in Cameras: DSLR
$2497 SAVE $470 = 15.0% $468 FREE ITEMS Nikon D500 DSLR with 16-80mm in Cameras: DSLR
$1497 SAVE $500 = 25.0% $466 FREE ITEMS Nikon D750 DSLR in Cameras: DSLR
$1997 SAVE $1100 = 35.0% $466 FREE ITEMS Nikon D750 DSLR with 24-120mm in Cameras: DSLR
$1747 SAVE $570 = 24.0% $61 FREE ITEMS Nikon D7500 DSLR with 16-80mm in Cameras: DSLR
$3297 SAVE $800 = 19.0% $556 FREE ITEMS Nikon D810 DSLR with 24-120mm in Cameras: DSLR
$1998 SAVE $400 = 16.0% Sony a7R II Mirrorless in Cameras: Mirrorless
$648 SAVE $100 = 13.0% $37 FREE ITEMS Sony DSC-RX100 III in Cameras: Point and Shoot
$300 SAVE $160 = 34.0% $9 FREE ITEMS Steiner 8x32 XC Binocular in All Other Categories
$1399 SAVE $100 = 6.0% ZEISS 18mm f/2.8 Batis in Lenses: Mirrorless

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.