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Samyang 10mm f/2.8 ED AS NCS CS Lens Review

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

| Samyang 10mm f/2.8 ED AS NCS CS in Interchangeable Lenses

Handling and Features

Samyang 10mm f/2.8 ED AS NCS CS Lens Review: Samyang 10mm F2 8 ED AS NCS CS Lens (5)
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 lens is available to fit many different types of camera with an APS-C or smaller sensor, including Canon, Nikon, Pentax, Sony, Samsung NX, Micro Four Thirds and Four Thirds SLRs. When used with an APS-C sensor camera, this lens provides an angle of view of up to 109.9 degrees. In this review we will be taking a close look at the Nikon version, which comes equipped with a metering chip, so that Matrix metering is supported on all Nikon camera bodies.


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Samyang 10mm f/2.8 ED AS NCS CS Handling and Features

Samyang 10mm f/2.8 ED AS NCS CS Lens Review: Samyang 10mm F2 8 ED AS NCS CS Lens (6)
Even though this lens is keenly priced for its specification, the build quality is excellent. Lightly textured high quality plastics have been used for much of the lens barrel, with a metallic red ring placed just after the aperture ring, which is a feature of Samyang's premium lenses. Despite its robust construction, the lens isn't overly heavy, which will make it feel just as at home on more compact camera bodies as it does on the Nikon D300 used for testing.

The manual focusing ring is smooth to operate and is a pleasure to use as a result, with just the right amount of damping making fine adjustments easy to apply. A very useful hyperfocal scale is provided on the lens barrel, which is adequately spaced to ensure accurate setting of the lens. Unfortunately, due to the use of low dispersion glass in the optical design, there is no hard stop for infinity focus, which may cause issues for those wanting to use this lens for astro photography. This lens' excellent manual focusing action will make this lens ideal for those who shoot video with their SLRs.

Samyang 10mm f/2.8 ED AS NCS CS Lens Review: Samyang 10mm F2 8 ED AS NCS CS Lens (2)
Closest focus is 24cm, which should be ideal for shooting in cramped environments or even for the occasional close up, where the wide angle will allow more of your subject's surroundings to be included than is possible with longer focal length lenses. Focusing is performed by moving lens element inside the lens barrel, so the length of the lens doesn't change. Due to the extreme wide angle nature of this lens, there is no filter thread provided and a deep, petal-shaped hood is built into the design of the lens.

Samyang 10mm f/2.8 ED AS NCS CS Lens Review: Samyang 10mm F2 8 ED AS NCS CS Lens (7)





Samyang 10mm f/2.8 ED AS NCS CS Performance

At maximum aperture, sharpness is already excellent in the centre of the frame, and good towards the edges of the frame. Stopping down improves performance across the frame, although it takes longer for the clarity towards the edges to catch up to that seen in the centre. Outstanding sharpness is achieved in the centre of the frame at f/4 and sharpness approaches excellent levels towards the edges of the frame at f/8.





Samyang 10mm f/2.8 ED AS NCS CS Lens Review: MTF
MTF @ 10mm

How to read our charts

The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges. Averaging them out gives the red weighted column.

The scale on the left side is an indication of actual image resolution. The taller the column, the better the lens performance. Simple.

For this review, the lens was tested on a Nikon D300 using Imatest.

Chromatic aberrations are very well controlled for this type of lens, remaining under half a pixel width in size at all apertures. These low levels of fringing should be barely visible in images, even with high contrast areas towards the edges of the frame.





Samyang 10mm f/2.8 ED AS NCS CS Lens Review: CA
Chromatic aberration @ 10mm

How to read our charts

Chromatic aberration is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. It can be cured in software.

Apochromatic lenses have special lens elements (aspheric, extra-low dispersion etc) to minimize the problem, hence they usually cost more.

For this review, the lens was tested on a Nikon D300 using Imatest.

Falloff of illumination towards the corners is well controlled for a wide angle lens with a fast maximum aperture. At f/2.8 the corners are only 1.63 stops darker than the image centre and visually uniform illumination is achieved with the lens stopped down to f/4 or beyond.

Imatest detected 4.65% barrel distortion, which is a reasonably mild amount for a lens this wide, but may still become visible in images with straight lines close to the edges of the frame. Due to the distortion pattern having a slight wavy appearance to it, applying corrections in image editing software afterwards may be quite tricky.

This is one of Samyang's first lenses to sport their Nano Coating system, which does an excellent job of suppressing flare and retaining contrast when shooting into the light.

Samyang 10mm f/2.8 ED AS NCS CS Sample Photos




Value For Money

This lens is fairly unique in what it offers for crop-sensor SLR cameras, with most alternatives being zoom lenses with a slower maximum aperture. The closest equivalent currently is Tokina's 11-16mm f/2.8 lens, which costs around £495. Although it offers the flexibility of a zoom and the same maximum aperture, it isn't quite as wide-angle as this Samyang lens.

The next closest alternative is Sigma's 10-20mm f/3.5 EX DC HSM lens, which costs around £395. Again, this lens offers the flexibility of zoom, but in this case the maximum aperture is two thirds of a stop slower, which will make a difference in low light conditions.




Samyang 10mm f/2.8 ED AS NCS CS Verdict

Overall, this lens is a good performer, for a decent price. The combination of good sharpness levels and a relatively fast f/2.8 maximum aperture should have London estate agents excited, as they will be able to make their dark dingy shoebox-sized bedsits look like bright, airy mansions, thanks to the wide angle of view and fast maximum aperture. Other people will just enjoy the excellent overall performance that they can get with this lens, without breaking the bank.





Samyang 10mm f/2.8 ED AS NCS CS Lens Review:  
  The Samyang 10mm f/2.8 ED AS NCS CS offers excellent overall performance without breaking the bank.



Samyang 10mm f/2.8 ED AS NCS CS Pros

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



Samyang 10mm f/2.8 ED AS NCS CS Cons

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






Samyang 10mm f/2.8 ED AS NCS CS Specifications

Lens Mounts
  • Nikon AF
  • Panasonic Micro Four Thirds
  • Samsung NX
  • Pentax KAF
  • Sony A
  • Canon EOS
  • Sony Alpha
  • Minolta AF
  • Olympus 4/3rds
  • Pentax K SMC-F
  • Canon EF
  • Olympus Micro Four Thirds
Focal Length10mm
Angle of View109.5°
Max Aperturef/2.8
Min Aperturef/22
Filter SizeNo Data
35mm equivalent15mm
Internal focusingYes
Maximum magnificationNo Data
Min Focus24cm
Box Contents
Box ContentsFront and rear Lens caps, soft lens bag.

View Full Product Details






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josa 11 25 Czech Republic
14 May 2014 2:21PM
Excellent performer!!!
16 May 2014 3:37PM
Dear Gary,

Excellent job as usual.

Two clarifications .... the lens is actually available also for Fuji X (see here .... and from the review it sounded like you were going to give it a highly recommended. Why did you decide to go for recommended only?

Best Regards
Compatibility indicates "Olympus Four Thirds" which I presume should be "Micro Four Thirds"
joshwa Plus
12 927 1 United Kingdom
2 Sep 2015 9:23AM

Quote:Compatibility indicates "Olympus Four Thirds" which I presume should be "Micro Four Thirds"

This has been updated, the lens is available for both Four Thirds, and Micro Four Thirds, cheers.

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