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Good value for money; Excellent sharpness in the centre from maximum aperture; Very good sharpness towards the edges stopped down to f/4 or beyond; Hyperfocal scale; Low CA levels; Good build

Wavy distortion pattern may be difficult to correct in image editing software; No hard infinity stop

Gary Wolstenholme reviews the Samyang 10mm f/2.8 ED AS NCS CS ultra wide-angle lens with Nano Coating System.

Good value for money; Excellent sharpness in the centre from maximum aperture; Very good sharpness towards the edges stopped down to f/4 or beyond; Hyperfocal scale; Low CA levels; Good build

Wavy distortion pattern may be difficult to correct in image editing software; No hard infinity stop

This manual focus wide angle lens for APS-C format cameras, offers a fast angle of view equivalent to a 15mm lens, with a relatively fast maximum aperture of f/2.8 for a budget launch price of around £429.

This manual focus wide angle lens for APS-C format cameras, offers a fast angle of view equivalent to a 15mm lens, with a relatively fast maximum aperture of f/2.8 for a budget launch price of around £429.

In April, 2014, the Samyang 10mm F2.8 ED AS NCS CS made its debut as a premium ultra-wide angle DSLR lens with some of Samyang's latest optical technologies, including the Nano Coating System.

Widest rectilinear prime available for Pentax; Exceptionally sharp across the frame; Fast F2.8 aperture; Unobtrusive barrel distortion; Good contrast; Minimal chromatic aberrations; Resistant to ghosting; Nice starburst effect at night; Compact and easy to carry; Automatic aperture control (full P,...

Prominent vignetting at F2.8 and F3.5; Difficult to focus on nearby subjects through the viewfinder; Harsh bokeh / sub-optimal for close-ups; Not possible to use lens filters; Prone to harsh flare in strong; direct light; No in-camera lens corrections; Only 1 year of warranty in the US; Potential...

In April, 2014, the Samyang 10mm F2.8 ED AS NCS CS made its debut as a premium ultra-wide angle DSLR lens with some of Samyang's latest optical technologies, including the Nano Coating System.

Widest rectilinear prime available for Pentax; Exceptionally sharp across the frame; Fast F2.8 aperture; Unobtrusive barrel distortion; Good contrast; Minimal chromatic aberrations; Resistant to ghosting; Nice starburst effect at night; Compact and easy to carry; Automatic aperture control (full P,...

Prominent vignetting at F2.8 and F3.5; Difficult to focus on nearby subjects through the viewfinder; Harsh bokeh / sub-optimal for close-ups; Not possible to use lens filters; Prone to harsh flare in strong; direct light; No in-camera lens corrections; Only 1 year of warranty in the US; Potential...

I bought this lens to use with my Nikon D7100 for milky way photography. The lens exceeded my expectations-- it was easy to use and the images were phenomenal-- a great angle of view and sharp detail. I could not be happier.

another good lens from SamYang/Walimex/Rokinon

sharp; contrasty; nice format this is a very good Ultra Wide and much better than Sigma 10 20 at 10mm It is also better than Sigma 8 16 at 10mm (but Sigma is also very very good

like every SY distance scale needs to be calibrated with Live View/ Contrast detect; but after that has been done...perfect

another good lens from SamYang/Walimex/Rokinon

sharp; contrasty; nice format this is a very good Ultra Wide and much better than Sigma 10 20 at 10mm It is also better than Sigma 8 16 at 10mm (but Sigma is also very very good

like every SY distance scale needs to be calibrated with Live View/ Contrast detect; but after that has been done...perfect

I purchased this specifically for astrophotography as it provided a large aperture. As auto-focus doesn't work when focusing on stars, the lack of it on this lens is not an issue for me.