White Square Bookshelf

I tested the 77mm Tru Match Vari Nd MKII on a Nikon Z6 with Nikon PC 85 mm and Nikon Z 20 mm lenses. No vignetting on either lens. With 85 mm I got 5 to 10.5 stops of adjustment before artifacts started in the corners. 10.5 stops with a landscape and 5 stops with the color checker. With Z 20 mm I got 7 stops of adjustment before corner artifacts with a landscape (same one as for 85 mm) A crude test of sharpness with the 85 mm, without filter, filter min setting, and filter one line down from max - no noticeable sharpness degradation. I created images of a GretagMacbeth ColorChecker Color Rendition Chart with 85 mm and found colors at any usable filter setting were fine for me. I developed in Lightroom Classic, set the white balance for each image from the center of the white square (#19) and adjusted the exposure of all images to match the white square of image 1 (no filter). I recorded the L*a*b* reading of square #6, bluish green. There is a 5 stop difference in exposure from min to maximum usable (no artifacts) for this subject. no filter 86.6 -20.7 -3.2 min 86.6 -21.2 -3.9 2 86.4 -21.2 -3.8 3 86.4 -20.9 -3.9 4 85.9 -21.8 -4.1 5 86.6 -20.6 -3.7 6 86.9 -20.7 -4.0 7 86.9 -20.4 -4.1 8 86.7 -20.6 -4.1 9 87.4 -20.3 -3.3 10 87.3 -20.3 -4.0 Be careful with taking pictures through glass that has a film coating. I saw purple hazing in sky pictures.

If you print black and white photos stock up on this stuff as the Pro-300 uses a lot of it. The Pro-300 with OEM inks like this are costing me about $0.00909 to $0.01015 per square inch or an average of $0.01 per square inch. With the amount I'm printing I am going through one of these every 1.5-2 weeks.

Exactly what I needed for my bookshelf speakers!

Sounds great crossed over with bookshelf speakers in a 5:1 configuration!

I've used it successfully on a square beam too.

Great size for bookshelf speakers, Light and easy to put together ..

Great colors convenient square sizes.

Used with a Times Square Lighting ellipsoidal.

Small, square, black and performs as expected.

I like the outer square dimensions, packs well with other gear.