It provides a 79 5 angle of view which translates into a 35mm format equivalency of 25 6mm.
Rokinon 16mm f 2 0 full frame.
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.
Mf digital photo.
Here i ve tested five popular wide angle lenses for astrophotography.
Rokinon 16mm f 2 ed as umc cs.
Focus is achieved without any lengthening or rotation of the front lens element.
A fast maximum aperture of f 2 0 is effective in low light shooting and provides shallow depth of field.
The 16mm f2 0 ed as umc cs 499 is just one in rokinon s line of affordably priced manual focus lenses for slrs and mirorless cameras it covers a very wide field of view and opens up all the.
At wide apertures like f 2 2 8 the image is also soft even in the centers which i didn t expect.
The center of the frame is very sharp at f 2 8 and even slightly sharper at f 4.
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.
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.
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.
Another couple inches of length are added with the hood but only about an ounce or so of weight.
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.
Stopping down to f 2 8 makes a significant improvement in sharpness especially in the center of the frame.
A fast maximum aperture of f 2 0 is effective in low light shooting and provides shallow depth of field.
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.
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.
The samyang 16mm f 2 lens is slightly soft at f 2 but rather evenly so across the entire frame.
Aps c dx 77mm.