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

Potential Uses for Canon 5D Mark IV Dual Pixels as per Alex Tutubalin of LibRaw

See RawDigger and FastRawViewer 25% Off, plus get a 30-day trial of RawDigger.

Alex Tutubalin of RawDigger has some interesting findings on the new Canon 5D Mark IV:

Alex writes:

Dual Pixel stuff looks very promising feature if properly supported in raw processing software.

Each pixel is divided in two parts, left and right, each looks into left and half sides of the lens. Primary usage is to allow phase autofocus on sensor (for video), but when combined and one half parts are stored separately in RAW this allows some interesting features:

As advertised in Canon materials:
- Slight refocusng after shot (because each half of pixel is effectively shot at extra aperture stop, so DOF is deeper. Refocused image looks not ideal sharp, but this may save slightly wrong focused image)
- Possible to remove flare if it come from one side of lens (left or right, not top or bottom)
- Possible to build image 'depth map' (by phase difference on two halves) and add additional blur on out-of-focus areas, creating more 'bokeh'.

Not advertised, but looks possible in some cases
- Extra stop in highlights ('half' part is one stop lower than combined, while data range is the same)

Not advertised, needs more testing:
- in focus areas are not 'phase shifted' in pixels halfs, this may allow extra resolution in sharp areas (effectively up to 60Mpix).

For the price:
- doubled file size
- lower burst FPS
- lower burst length (?? not sure, buffer size for dual-pixel raws not mentioned in manual, while lower burst FPS is)

Noise is not increased, because 'A+B' data looks digitized the right way (combined before ADC used).

We have only two samples with this feature enabled, so all findings about one extra stop are based on these two files (but looks very promising with second sample with blown out sky).

Do not know what possibilities will be supported for raw converters. Adobe promised 'support' in LR/ACR, but no details.

Durable and fast, up to 1800MB/s
B&H Deal ZoneDeals by Brand/Category/Savings
Deals expire in 5 hours unless noted. Certain deals may last longer.
$1199 SAVE $500 = 29.0% $19 FREE ITEMS Canon 18x50 IS Image Stabilized Binocular in All Other Categories
$999 SAVE $700 = 41.0% $101 FREE ITEMS Canon EOS 6D DSLR in Cameras: DSLR
$649 SAVE $250 = 27.0% $20 FREE ITEMS Canon EOS 77D DSLR in Cameras: DSLR
$1049 SAVE $450 = 30.0% $20 FREE ITEMS Canon EOS 77D DSLR with 18-135mm USM in Cameras: DSLR
$1299 SAVE $500 = 27.0% $101 FREE ITEMS Canon EOS 80D DSLR with 18-135mm in Cameras: DSLR
$70 SAVE $20 = 22.0% $19 FREE ITEMS Celestron 15x70 SkyMaster Binocular in All Other Categories
$1697 SAVE $300 = 15.0% Nikon D750 DSLR in Cameras: DSLR
$2197 SAVE $900 = 29.0% Nikon D750 DSLR with 24-120mm in Cameras: DSLR
$3297 SAVE $800 = 19.0% Nikon D810 DSLR with 24-120mm in Cameras: DSLR
$300 SAVE $160 = 34.0% $9 FREE ITEMS Steiner 8x32 XC Binocular in All Other Categories
$1099 SAVE $200 = 15.0% ZEISS 25mm f/2 Batis in Lenses: Mirrorless
$1299 SAVE $200 = 13.0% ZEISS 21mm f/2.8 Loxia in Lenses: Mirrorless
$1999 SAVE $300 = 13.0% ZEISS 18mm f/2.8 Milvus ZF.2 in Lenses: DSLR

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.