Recently I got the chance to beta test the Nikon fit AF 14mm 2.8 F by Samyang optics. The Samyang 14mm 2.8 F is the first autofocus lens to be compatible with a full frame Nikon range. That's right Landscape and astrophotography pixel peepers. We now have a high resolution 14mm 2.8, at the fraction of the cost. Thanks to Samyang Optics!
But why is it so good? Let’s break down some of the leading points to the spec of this lens.
The Samyang AF 14mm 2.8 F lens is a ultra wide angle lens. With a upto 116 degree angle (depending on the size of you on your size sensor). Meaning you have the field of view of around one of your own eyes. Making it’s a ultra wide angle lens.
The Samyang AF 14mm 2.8 F lens is made with 2 aspherical lens; this means it uses curved glass to improve optical performance and improve aberration correction.
The Samyang 14mm 2.8 F for Nikon has a refractive count of 4. To understand this, you have to understand that when light passing through thick glass, it changing direction a tad (for my tech people, you can find software online to mathematically calculate the change of direction).
The aspherical lens means its middle part of the glass is thicker than the sides; meaning the light rays change direction more in the middle, then the sides, and this can distort the frame. This also changes the speed that the light hits the sensor of the camera as the speed slows down more when the light goes through the thicker part of glass light than the sides.
A high refractive index helps to reduce the fraction speed between the thick and thinner parts of the glass; which in turn helps the light to reach the seacor faster. To put it in perspective; A 1st class pair of focal glasses for nearsighted, or farsighted people might have around 2.5 refractive index count to reduce the glass distortion. The Samyang 14mm 2.8 F has a 4 index which is a high level count. Which equals a faster, less distorted lens.
The Samyang AF 14mm 2.8 F for Nikon also has a 1 extra-low dispersion lens elements, which helps with lens reducing chromatic aberration. To understand this, you need to understand that different colours travel through the lens at different speeds. So some colours travel through faster than others, with red traveling the fastest, and purple traveling the slowest, so you might see a purple ghosting around your subject. The extra-low dispersion elements will help to reduce the aberration.
The Samyang 14mm 2.8 F Nikon Fit also has 7 aperture blades. Blades relates to the part of the aperture that open and closes. This lens has 7 blades that create a circle that can be open or closed. With 7 blades, it offers 14 points (14 points will help to spread the light to all parts of your frame). This factor is will be great for smooth and undistracting bokeh at f2.8, or starburst from f16 (this will come in handy with all of the LED lighting being used on public lampposts)
Using this type of ultra wide angle use to equal a whole load of lens distortion. Which is fine, as there is good editing software available. However, nowadays we have more options and if the glass is made well, it can help to make the distortions less visible, and this Samyang AF 14mm 2.8 F to fit Nikon didn’t let me down.
The Samyang 14mm 2.8 F is made with care and class. It's a ludicrous amount of good quality lens for the money. The outer casing is sturdy, smooth and made to last. With a manual to autofocus switch on the side, and petal lens hood built in to prevent light flare and protection for the glass. This lens is a great bit if kit and it has the potential to become a number 1 product for landscape, astro, street, documentary photographers who require a good quality lens, at a low price.
This lens is available in September 2018 for around £650!