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Thread: 500D or macro lens

  1. #1

    Default 500D or macro lens

    Tried macro snaps with 300L f4 with and without EF 1.4x. Magnification seem like not much difference with or without ef 1.4x (full frame ~6-7cm).

    Just wondering what would be the dimension at full frame (with or without ef 1.4x) on 20D with 500D?

    This option is cheapest & make use of available IS. Is the extra $ worth spending on macro lens
    Sigma 150 or tamron 180?

    Thanks in advance.

  2. #2

    Default Re: 500D or macro lens

    Quote Originally Posted by bigmouse
    Tried macro snaps with 300L f4 with and without EF 1.4x. Magnification seem like not much difference with or without ef 1.4x (full frame ~6-7cm).

    Just wondering what would be the dimension at full frame (with or without ef 1.4x) on 20D with 500D?

    This option is cheapest & make use of available IS. Is the extra $ worth spending on macro lens
    Sigma 150 or tamron 180?

    Thanks in advance.
    Magnification will not increase if you just use 1.4x teleconverter. It will only increase the focusing distance. You need to use ext. tube or closeup filter like 500D.

    Click here to check the list of Canon EF lens via 250D/500D/ext tube 12mm,25mm

    From the above site, full frame result will give (0.59x to 0.7x) magnification for 300mm f4 + 500D.

    So for 20D should give a magnification of 1.6x (0.59 to 0.7) = 0.944x to 1.12x

    with 1.4x TC, it should give a magnification of 1.4x (0.944 to 1.12) = 1.3216x to 1.568x

    My advice is do not use 1.4 TC since it will not give significant magnification different and will degrade your quality.

    Using 500D , your working distance is 1 foot.
    See my Photo Gallery at the Clubsnap

  3. #3

    Default Re: 500D or macro lens

    Thanks megaweb.... Yes I did realise that the working distance is greatly increased with the ef1.4x but was a bit disappointed the it did not increase magnification.

    I think the 500D option is more versatile. Fix on to shoot bugs, take off to shoot birds.
    500D here I come...

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