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Breakthrough Photography 6-stop ND Polarizer for Motion Blur in Broad Daylight + Reader Comments

My last trip included a lot of Voigtlander FE NOKTON 21mm f/1.4 and Canon RF 85mm f/1.2L and Canon RF 28-70mm f/2L and Canon RF 35mm f/1.8 Macro images. But it’s going to take some time to publish all that as I work through the Fujifilm GFX-100, whose clock is ticking on the loaner period. But I thought I’d show one interesting image here today.

Below, this image is a 4-frame focus stack with a Breakthrough Photography 6-stop ND polarizer. It allows shooting at relatively slow shutter speeds at mid-day, thus allowing motion blur.

CLICK TO VIEW: Breakthrough Photography Filters at B&H Photo

Since B&H Photo has a very limited selection of Breakthrough Photography products, be sure to visit the Breakthrough Photography web site at and specifically the X4 CPL Dark 6-stop.

Continues below...

Full resolution image available in Canon RF 85mm f/1.2L Examples: Eastern Sierra, more images later.

Log across Mill Creek, Lundy Canyon
f11 @ 10.0 sec focus stack 4 frames, ISO 50; 2019-07-16 13:05:06
Canon EOS R + Canon RF 85mm f/1.2L USM + polarizer Breakthrough Photography 6-stop ND polarizer
ENV: Lundy Canyon, altitude 7600 ft / 2316 m, 70°F / 21°C
RAW: USM {8,50,0}

[low-res image for bot]

John G writes:

Breakthrough Photography makes the best ND filters. Incredibly color neutral. But you must buy the X4 version for greatest color accuracy.

All the other filters I’ve tried, and I’ve tried nearly half-dozen brands, have severe color shift by comparison. Would your readers be bored to tears by an ND filter comparison? I would have save a ton of money if I hadn’t had to do the comparisons myself.

DIGLLOYD: agreed—the X4 filters have outstanding coatings—see the X4 Performance Gallery and free Essential Reference Guide to LONG EXPOSURE Photography.

Scroll down on this page for more:

Our state-of-the-art multi-resistant coating (MRC) is an optical coating applied to both surfaces of the glass disk to reduce reflection and to increase surface durability. Our proprietary MRC coating is structurally harder than the glass itself and the reduced reflections improve the efficiency since less light is lost. The reduction of reflections also improves the contrast of the image by elimination of stray light. The real world result? Better contrast and color.

Low light transmission and green flaring are common problems with uncoated glass. As MRC coatings are added to each side of the optical disk light transmission steadily increases with flaring steadily decreasing. In our lab tests light transmission apexes at about 16-layers of MRC, and slowly decreasing in transmission at 18 and above. 8-layers of MRC are applied evenly to both sides of each optical disk resulting in MRC16.

Transmission spectrum using scan speed of 1200 nm/min at 2.00nm resolution. Analyzed on a Hitachi U-4150
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