7artisans 25mm F1.8 E-mount lens review by QuietOC
|QuietOC#44391 date: Oct-19-2019|
flare control: 3
|ownership:||I own this lens|
|compared to:||Sony DT 16-50 F2.8 SSM|
Sigma 17-50mm F2.8 EX DC OS HSM
Sigma 20 F1.8 EX DG
Sony E 20 F2.8
Minolta AF 20 F2.8 & RS
Sony Distagon 24 F2 ZA SSM
Minolta AF 24 F2.8
Sigma AF 24 F2.8 II
Discover/Neewer 25 F1.8
Canon EF 28 F1.8 USM
Sigma 28 F1.8 HS & EX DG
Sony FE 28 F2
Minolta MD & AF 28 F2
Canon EF 28 F2.8 IS USM
Minolta/Sony AF 28 F2.8
Neewer 28 F2.8
Sigma 30 F1.4 DC DN C & EX DC
Sigma 30 F2.8 DN Art
Sony DT 30 F2.8 Macro SAM
7Artisans 35 F2
|price paid:||75 USD (new)|
|positive:||Size and weight|
|negative:||Mild barrel distortion|
Mild vignetting wide-open
Issues in corners
|comment:||This is a small metal manual lens with a native E-mount that is available under several brand names. It has been heavily marketed by 7Artisans recently.|
I purchased the silver Discover version for $75 shipped in 2016 from an eBay seller based in California. I purchased the black Neewer branded version in late 2018. These look and function very similarly. "MADE IN CHINA"
The original Zonlai version of this lens had the aperture ring at the front of the lens and was listed for $130. Zonlai also sold a similar looking 35 F1.8 lens, and now has a 22 F1.8.
Meike sells a MK 25 F1.8 that has a larger filter thread diameter. I have a C-mount 25 F1.8 that has a more complex optical formula. I've also tried another C-mount 25 "F1.8" mini lens that was awful.
It feels nicer than the Kaxinda/Neewer/Meike primes. There is no roughness in either the focus or aperture throws. Both are nicely damped. The focus is the opposite direction to Minolta and Canon lenses. This lens focuses much closer than the Meike, but not as close as the Green-ring C-mount lens.
The center sharpness is good wide-open, but the corners are a bit dark and mushy. It has a similar amount of barrel distortion as the 16-50PZ, 18-55 SAM, and Minolta AF 24mm F2.8.
It seems to let in more light than the printed aperture numbers report--brighter than other F1.7 and F1.8 primes. The aperture scale is off more than a full stop comparing both exposure and visual aperture measure. F/4 on the scale seems to be closer to f/2.8--f/16 on the scale is more like f/8. I redid the charts using equivalent exposures to adjust the aperture instead of relying on the printed aperture scale.
Test charts and sample images here.