Latest or all posts or last 15, 30, 90 or 180 days.
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$1450 $900
SAVE $550

$2445 $2145
SAVE $300

$1199 $999
SAVE $200

$5699 $4699
SAVE $1000

$1799 $1349
SAVE $450

$2999 $2399
SAVE $600

$18599 $17599
SAVE $1000

$600 $400
SAVE $200

$249 $249
SAVE $click

$1149 $799
SAVE $350

$1499 $999
SAVE $500

$1799 $1349
SAVE $450

$1399 $1049
SAVE $350

$150 $50
SAVE $100

$380 $340
SAVE $40

$440 $440
SAVE $click

$249 $249
SAVE $click

$370 $330
SAVE $40

$420 $170
SAVE $250

$1499 $699
SAVE $800

$1499 $699
SAVE $800

$420 $170
SAVE $250

$369 $200
SAVE $169

$1699 $1399
SAVE $300

$1498 $998
SAVE $500

$999 $949
SAVE $50

$1099 $999
SAVE $100

Upgrade the memory of your 2019 iMac up to 128GB
OWC Envoy Pro EX SSD
Blazingly fast Thunderbolt 3 SSD!

Up to 4TB capacity, USB-C compatible.

USB-C model also available


Great for travel or for desktop!

Reader Comment: Lens Adaptability, Lens Adapters

The golden age of photography is upon us, which includes the golden age of lenses. Optical quality has never been better—along with the grunt to make it even better, computational photography.

Chris R writes:

Here’s another observation, in the not so distant future, regardless of which system you use, there will be an adapter for just about every system so that any third party lens, or indeed, camera system will be universally adaptable to any lens so it won’t be as much of an issue which system you settle for.

DIGLLOYD: sort of, but not so much at a practical matter, for many reasons.

I do go to the trouble of adapting lenses in special cases, such as shooting Zeiss DSLR lenses in Multi-Shot High-Res mode, or F-mount lenses on the Nikon Z7 or Canon EF lenses on the Canon EOS R, but it’s far from ideal from a handling perspective (and no EXIF either).

Flange focal distance

First, the flange focal distance governs whether a lens adapter can be inserted between a lens and the camera. For example, the 16m flange focal distance of the Nikon Z7 lets (in priniciple) all other mirrorless and DSLR and rangefinder lenses mount via a lens adapter.

That’s because the flange focal distance of other camera present camera systems range are 18mm or greater, thus allowing at least a 2mm gap for an adapter to be inserted between lens and camera. While 2mm is iffy for support/stability reasons, it already exists for Nikon DSLR lenses (46.5mm FFO) to Canon DSLR (44.0mm FFO). Thi

The foregoing is why just about any lens can be mounted on the Nikon Z7, but Nikon NIKKOR Z lenses cannot be adapted to any other system, at least not without inserting additional optics (yuck) or dubious into-camera-throat designs.

Fujifilm lens mount schematic: implies 3.1mm thick sensor cover glass, 26.7mm flange focal distance

Electronics

Most lenses these days lack an aperture ring, so a lens adapter has to, at the least, provide electronic translation from the camera to the lens for aperture control. And when it comes to autofocus support, good luck with many adapters—poor AF performance.

Lens support

Camera brand X does not support lens correction of random Camera brand y lenses—so distortion correction and chromatic correction and vignetting correction are all off while shooting. This is sometimes OK, but sometimes a serious problem in that framing becomes difficult for a lens with significant distortion. Worse, most raw convertes including ACR do not provide any selectable lens profile support for Lens Y on Camera X, recognizing the len properly only when shot natively.

Physical

Many lenses are too heavy and too awkward to be practical and increase the risk of damage to both lens and camera flange (bumps, sheer weight). There are also two additional mounting surfaces which have significant risk of having planarity deviations versus a single mounting interface of a native lens.

Optics and sensor cover glass

The variations in sensor cover glass* thickness can be small to large, but high performance lenses can be very sensitive off-axis to differences. Thus performance of a lens designed for 0.8mm thick Leica M sensors is most often degraded massively on mirrorless—no exceptions so far—see MTF on Mirrorless Cameras of the Zeiss ZM 35mm f/1.4 Distagon for the huge losses (although it can offer stunning performance by f/8).

* Total effective filter stack thickness includes the sensor cover glass and its index of refraction, plus additional layers such as an IR-blocking layer.

Differing sensor cover glass thickness vs design parameters causes light rays to diverge inappropriately, killing performance

OWC Accelsior 4M2 PCIe SSD
6000 MB/sec!
Mac or PC.


Ideal for Lightroom, Photoshop, video.
Capacity up to 16TB!
OWC Thunderblade Thunderbolt 3 SSD

Blazing fast, up to 16TB.

YEE HAH!



√ No more slow and noisy hard drives!
Save Big $$$$ on Memory for 2019 Mac Pro

Up to 65% better pricing than Apple

Lloyd recommends 32GB RDIMM modules for most users (more expensive LRDIMMS are for 512GB or more).


Canon EOS R5

NEW! Available for pre-order.

45 megapixels, 8K30 and 4K120 10-bit video, IBIS, 5.7 megadot EVF, 20 fps.

Save the tax, we pay you back, instantly!

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.