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