If you head over to the review of the shiny new Viltrox AF 35mm f/1.7 Air, you'll see that we liked it rather a lot, awarding it a highly respectable four-and-a-half stars and our coveted 'recommended' badge to boot. But there's one thing that really gets my goat: that f/1.7 aperture.
What gives with these unnatural fractions of an f-stop? I know where I am with an f/1.8 lens, just as I know the score with an f/1.4 or f/2 or f/2.8 lens, because they follow the longstanding accepted convention of dealing with f-stops in full or third stops.
