#Samyang objektiv til nikon manual#
#Samyang objektiv til nikon software#

The one supplied with this lens didn't attach securely to the lens, falling off with the slightest knock.

#Samyang objektiv til nikon software#

The distortion pattern is uniform across the frame, so this mild distortion is simple to correct in image editing software afterwards if you must have absolutely straight lines.Ī shallow plastic circular hood is supplied with the lens as standard. Imatest could only pick up 0.162% barrel distortion. The corners are 2.19 stops darker than the image centre at f/1.4 and visually uniform illumination is achieved by f/5.6.īarrel distortion is present, but it is so slight that you'll be hard pushed to ever notice it. It can be cured in software.Īpochromatic lenses have special lens elements (aspheric, extra-low dispersion etc) to minimize the problem, hence they usually cost more.įalloff of illumination towards the corners is typical of a fast aperture lens like this. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. This low level should barely be visible, even when examining images at 100% on a computer screen.Ĭhromatic aberration is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Simple.įor this review, the lens was tested on a Nikon D600 using Imatest.Ĭhromatic aberrations are very well controlled, barely exceeding a quarter of a pixel width at all apertures, except f/22. The taller the column, the better the lens performance. The scale on the left side is an indication of actual image resolution. Averaging them out gives the red weighted column. The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges. Here sharpness in the centre is outstanding and clarity towards the edges of the frame is excellent. Stopping down improves sharpness across the frame with peak performance being realised between f/5.6 and f/8. Sharpness is already very good in the centre of the frame at maximum aperture, and good towards the edges of the frame. This lens performs way and above how you might expect a £300 optic to. As this lens is optimised for video, the focusing distance and aperture value need to be read from the side of the lens, rather than the top. There is no hyperfocal distance scale, or hard infinity stop, which is unusual for a lens like this, which uses no low dispersion glass in its optical design. We used this method for testing the lens and reading aperture values, so 'f' values will be referred to in this review. A maximum aperture of f/1.4 needs to be entered for the metering to work correctly. Most modern cameras won't benefit from the lens mount cut out, but Nikon's high-end DLSR bodies will support all metering modes if the lens' information is input into the Non-CPU lens data menu. The Nikon version of this lens meets AIS specification, which means it has the metering lug on the aperture ring and a small cut out in the lens mount. The lens takes 72mm filters and as focusing is performed internally, the lens doesn't extend and the filter thread doesn't rotate, which makes this lens ideal for use with polarising and graduated filters. Closest focus is one metre, which is fine for most portraits, but can be a little limiting for general use.

Even if the lens is focused by hand, the geared surface provides a comfortable and sure grip and the focusing action is well damped, which makes applying fine adjustments a pleasure.

#Samyang objektiv til nikon manual#

The manual focusing ring on this lens sports a geared grip for use with video focusing rigs and follow focus equipment. Weighing 513g, this lens isn't overly heavy for a lens of this type and it balances well with the Nikon D600 used for testing. This lens is very well put together, thanks to the use of high quality plastics and a metal lens mount. Samyang 85mm T1.5 AS IF UMC Handling and Features In this review we will be testing the Nikon version.

This lens is available to fit Canon, Nikon and Sony DSLRs. Optically, the lens is the same as Samyang's 85mm f/1.4 we have tested previously. Transmission stops take into account light that is lost as it passes through the lens, which is important when attempting to gain a consistent exposure filmed with different lenses.

This lens is optimised for those wishing to record video with their DSLR, which is why 'T stops' have been used instead of 'F stops'. This manual focus medium telephoto lens, offers a fast T1.5 maximum aperture for a budget price of around £300.