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Thread: difference between prosumer n slr

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    Default difference between prosumer n slr

    i own a olympus c-750. on my cam the aperture setting is only available between f/2.8-f/8. isit that only in a slr cam can i acheived a small aperture size of f/16?

  2. #2
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    Default Re: difference between prosumer n slr

    Quote Originally Posted by corporal007
    i own a olympus c-750. on my cam the aperture setting is only available between f/2.8-f/8. isit that only in a slr cam can i acheived a small aperture size of f/16?
    Usually for prosumers their smallest aperture is around f/11. SLRs/DSLRs usually can reach a max of f/22 - f/38, depending on the type of lens used.
    Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.

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    Default Re: difference between prosumer n slr

    what happens is that in digicams, the physical focal length of the lenses is very very short already, in the region of 5mm. as aperture is expressed as a division of the focal length, an ƒ/8 on a digicam would be the same as ƒ/80 on a 50mm 35mm format lens. when it comes to such small physical number, the actual absolute number becomes important, since a 5mm lens at ƒ/8 gives you an aperture of only 0.625mm which is VERY SMALL and hard to engineer properly. also at that kind of microscopic size, diffraction becomes an issue.

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    Default Re: difference between prosumer n slr

    In addition, the DOF on compacts/prosumers are very large.
    Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.

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