Today we will look at a variable ND filter from the manufacturer Kent & Faith.
This brand specializes in the production of various photo equipment and photo / video accessories, such as tripods, filters, various adapters and adapters for lenses, photo backpacks and more. There is a website where you can view and purchase their products. There is also a store on AliExpress.
On the product page there are different variations of ND filters, for different threads and with different levels of darkness. In this case, we are talking about an ND2-32 filter with a diameter of 52mm.
Let’s test it on a Sigma 30mm 1.4 lens (Sony A6300 camera).
The filter housing is made of aluminum, the assembly is of high quality, there is no backlash. Filter weight — 26 grams.
The body is made of two parts, the level of darkness is adjusted by rotating the front. The rotation is smooth, moderately tight. When the maximum / minimum values are reached, a stop occurs.
Due to the ribbing of the second part, the filter is convenient to twist and remove from the lens, it does not slip.
The advantages of this lens include the absence of a “cross” defect on wide-angle lenses. Checked on the action camera SJCAM M20.
Examples of photos without a filter, with minimum and maximum eclipse, automatic settings:
ISO 100, f/2.8, 1/2300
ISO 100, f/2.8, 1/900
ISO 134, f/2.8, 1/100
The sharpness of the image with the filter drops very slightly, almost imperceptibly.
Examples from a Sony camera (without filter, with minimum and maximum eclipse):
ISO 100, f/6.7, 1/90
ISO 100, f/6.7, 1/45
ISO 100, f/6.7, 1/4
If we compare the exposure value without a filter and with its maximum eclipse, there is a decrease in exposure by 3–3.5 stops (from +2 to ‑1/-1.5). The shutter speed decreases from 1/250 to 1/10. The aperture changes from 13 to 3.5.
The filter allows you to shoot in bright sunlight at the widest aperture. For example, without a filter at aperture 1.4 and ISO 100, the shutter speed was maximum (1/4000) and there were flashes, with a filter at maximum eclipse, the shutter speed dropped to 1/750.
Using the filter, you can take pictures in the daytime with a long exposure (about 1 second at aperture 8 and above) and get interesting effects.
You can also make light drawings during the day 🙂
Original photos can be viewed/downloaded here
+ presentable packaging (suitable as a gift);
+ high-quality assembly;
+ excellent picture quality at any filter value.