THESE 24mm and 21mm lenses (21mm being a novelty for 35mm film and digital cameras) have had their optics enhanced to such an extend that photographers will need to ‘redefine wide-angle low light photography’.
What will come as a pleasant surprise is that where you would usually expect distortion to show up in the wide-angle shots, with these lenses, this will be less the case as the distortion and vignetting issues have been seriously tackled here.
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