Re: EF 24-70 f/4L IS & EF 35 f/2 IS
Why the filter size of 77mm still? Why didn't they make it 67mm just like the 70-200mm f4L and IS? I guess the 17-40mm f/4L is also 77mm, but I see most first-time FF users pairing this lens up first with the tele zoom and then adding the UWA later.
Same is true for the rumored 35mm. Why 67mm (up from 52mm of the previous model)? I would think that 58mm just like the 24 and 28mm IS lenses would make a lot more sense. 58mm is easily big enough to squeeze in the objective element for 35mm f/2. The objective elements in the 24mm and 28mm are a larger diameter than they mathematically need to be, and maybe that factors into their excellent performance. Maybe the 35mm f/2 is even larger and will have similar or superior IQ because of it.
Why the filter size of 77mm still? Why didn't they make it 67mm just like the 70-200mm f4L and IS? I guess the 17-40mm f/4L is also 77mm, but I see most first-time FF users pairing this lens up first with the tele zoom and then adding the UWA later.
Same is true for the rumored 35mm. Why 67mm (up from 52mm of the previous model)? I would think that 58mm just like the 24 and 28mm IS lenses would make a lot more sense. 58mm is easily big enough to squeeze in the objective element for 35mm f/2. The objective elements in the 24mm and 28mm are a larger diameter than they mathematically need to be, and maybe that factors into their excellent performance. Maybe the 35mm f/2 is even larger and will have similar or superior IQ because of it.
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