Samsung NX 30mm f/2 Pancake on NX20
How does this classic standard stack up against the 20 MP sensor in the NX20?
I am updating resolution numbers from my review of the lens on NX11. Picture from NX11 review.
Uncorrected Optical Performance
Comments on the Results
These are uncorrected results from LR4.1. The lens is extremely sharp in the center at all aperture settings and very good even in the corners from wide open, but excellent by f/4 to f/8. The resolution characteristics of this lens are great considering the size and cost.
Distortion isn’t bad considering this is uncorrected at about -1.15% (numeric average for all apertures) for a lens that was meant to have corrections applied by the camera.
Lateral CA is well controlled, even without corrections, having only about 3/4 pixel width at the edges uncorrected. Longitudinal CA is visible at f/2, but mostly disappears on stopping down (see graph photos at end of review).
Purple fringing is visible, mostly at f/2, but it isn’t bad. Average for this class of lens.
Coma and astigmatism aren’t bad, but there is some deformation of the bokeh circles in the corner wide open that disappear once stopped down.
I will update flare resistance and post some gallery shots in the next week or so.
I measured the focal length again, and got the same result of 33mm at 1:54 magnification. This makes this lens a true 50mm equivalent (1.53 * 33 = 50mm).
Pros and Cons
- Overall Performance
- Compact Size
- Visible Longitudinal CA at f/2
- Minor Coma/Astigmatism at f/2
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