Rokinon 16mm F 2 0 Full Frame

How do they compare.

Rokinon 16mm f 2 0 full frame.

Stopping down to f 2 8 makes a significant improvement in sharpness especially in the center of the frame. Focus is achieved without any lengthening or rotation of the front lens element. At wide apertures like f 2 2 8 the image is also soft even in the centers which i didn t expect. Can properly cover full frame sensors equivalent in size to 35mm film 36 x 24mm as well as smaller aps c and mft size sensors.

Mf digital photo. It provides a 79 5 angle of view which translates into a 35mm format equivalency of 25 6mm. Aps c dx 77mm. The samyang 16mm f 2 lens is slightly soft at f 2 but rather evenly so across the entire frame.

Click here to view a larger version the rokinon 16mm f 2 is a very special lens because it is one of the first wide angle fast aperture primes ever made specifically for aps c crop sensor dslr cameras. The 16mm f 2 0 ed as umc cs lens from rokinon is a manual focus wide angle lens compatible with aps c format dslr digital cameras. Until now if you wanted a lens faster than f 2 8 and wider than 35mm your only options were the expensive 24mm full frame primes used on full frame cameras. The center of the frame is very sharp at f 2 8 and even slightly sharper at f 4.

A fast maximum aperture of f 2 0 is effective in low light shooting and provides shallow depth of field. It provides a 79 5 angle of view which translates into a 35mm format equivalency of 25 6mm. 3 27 inches 84 millimeters wide 3 42 inches 86 millimeters long with a moderate weight of 20 ounces 571 grams. Here i ve tested five popular wide angle lenses for astrophotography.

Optically speaking the rokinon 16mm f 2 is excellent but only in a narrow range like f 4 5 6 stopping down to f 8 or smaller results in serious diffraction and makes the image look soft. A fast maximum aperture of f 2 0 is effective in low light shooting and provides shallow depth of field. Another couple inches of length are added with the hood but only about an ounce or so of weight. The laowa 12mm f 2 8 rokinon 14mm f 2 4 samyang 14mm f 2 8 nikon 14 24mm f 2 8 and irix 15mm f 2 4.

Before getting started i d like to mention that this only covers a small sample of the total number of good astrophotography lenses out there.