Larger lenses for digital cameras?

Discussion in 'Digital Photography' started by BOOSTD, Dec 5, 2007.

  1. BOOSTD macrumors member

    Nov 8, 2007
    Hello all, I have a 1981 Minolta x-700 with a rokkor 50mm lens f/1.4. The other day I was comparing it to my Canon ef 85mm f/1.8 and noticed that (in general) film camera lenses have significantly smaller diameter lenses (just the glass) than newer digital SLR lenses. Having compared similar focal lengths and max aperture lenses from the canon line and (antique) Minolta 35mm lenses, it seems like this is the trend. Has the diameter of newer lenses been increased to accommodate the lower light sensitivity of CMOS sensors vs film (IS there a difference in sensitivity?).

  2. ChrisA macrumors G4

    Jan 5, 2006
    Redondo Beach, California
    You have to compare lenses with identical specs. Film or digital, an 85mm f/1.8 lens will be larger then a 50mm f/1.4 Do you have examples where you meared the diameter of the two same-spec lenses?

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