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rectilinear ultra-wide angle zoom with field of view as for 14-28mm in 35mm terms
cannot use filters as very convex glass element
minimal barrel/pincushion distortion, almost zero at 10mm focal length.
very sharp;
performs best at f/5.6-f/8.
this lens is so good & allows unique creative opportunities, I just had to get one :)
perfect for indoor work
seems to have an inbuilt polariser-like effect on blue sky - perhaps the Brewster effect?
a little purple fringing wide open outdoors at 7mm in high contrast situations at the periphery.
flare spots if you allow light sources to hit its convex outer lens.
780g;
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see my photos using the 7-14mm: