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Thread: SIGMA 28-300mm F3.5-6.3 DG Macro

  1. #1
    Member
    Join Date
    Jul 2005
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    Singapore
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    Default SIGMA 28-300mm F3.5-6.3 DG Macro

    Hi All

    I bought this lens and found it quite handy. Anyone can share more tips on how to maximise the potential of this lens while i am still clicking away with this lens using my D50 esp those who have it/ using it.

    http://www.sigmaphoto.com/lenses/len...05&navigator=2

    The web states:
    Macro photography with a 1:3 ratio

    The 28-300mm F3.5-6.3 DG MACRO lens has a minimum focusing distance of 50cm at all focal lengths and is equipped with a macro mechanism for close-up photography at 300mm telephoto, allowing a reproduction ratio of 1:3.

    Can i know what does it mean
    Thanks!

  2. #2
    Member
    Join Date
    Jul 2005
    Location
    Singapore
    Posts
    289

    Default Re: SIGMA 28-300mm F3.5-6.3 DG Macro

    anyone?

  3. #3

    Default Re: SIGMA 28-300mm F3.5-6.3 DG Macro

    What it means is:
    1. At the longest focal length (300mm),
    2. Closest focusing distance (0.5m),
    3. Your subject will be at a magification of 1/3 its original size on the film/sensor.
    For example, at the above criteria you tried to shoot a coin which is 30mm in diameter. The image of the coin formed on the film/sensor will be 10mm diameter in size (1:3 reproduction ratio).

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