Samyang 135mm F2.0 ED UMC

Extremely sharp from edge to edge. No distortion. Wide aperture.

Some fall-off at f/2. Omits autofocus and image stabilization.

Image Quality and Conclusions I used Imatest to check the sharpness of the lens when paired with the full-frame Nikon D810 . At its widest aperture the lens puts up incredible numbers. It scores 3,620 lines per picture height on a center-weighted...

sensational resolution in the frame centre ; excellent image quality on the edge of APS-C/DX ; very good image quality on the edge of full frame ; imperceptible longitudinal chromatic aberration ; negligible lateral chromatic aberration ; no problems...

too high vignetting on full frame

Excellent sharpness from maximum aperture ; Smooth manual focus action ; Good build ; Low CA ; Low distortion

Lack of autofocus may be enough to put many off this lens ; Loss of contrast when shooting into the light

Those interested in a fast 135mm, who are either on a budget or don’t need autofocus for their work, should certainly consider this lens. It’s more than capable of delivering sharpness on a par with high-end lenses, but at a fraction of the cost. This,...

SHARP and contrasty from f2.0! Beautiful bokeh

Manual focus, but in my Nikon D750 i have the dot focus confirmation so it's not a big problem.No stabilization

sharp sharp sharp; contrasty

big

I use it for astrophotography, and point light sources on black ground are a nightmare for all optics. This lens is totally sharp and colour free to the FF edge wide open at f/2. Unbelievable!See: http://www.astrobin.com/228813

No autofocus, no stabilization

Razorsharp from f/2 to f/5.6 (best @f/4)Smooth but firm focus ringGreat contrast and micro-contrastShort minimal focusing distancePouch & reversible hood includedPrice

Not distributed everywhere for m4/3Focusing is critical but is awaited for this range of focalHeavy

incredible sharpness, contrast, colour and bokeh at any aperture*beautiful rendering*short minimal focusing distance*price

very critical manual focusing, split-field or microprism screen necessary ; needs getting used to*slightly heavy