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Thread: Getting a Four Third system simply for the x2 crop factor?

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    Default Getting a Four Third system simply for the x2 crop factor?

    If use a 70-200 f/2.8 that would mean 400mm at f/2.8 which is pretty cost effective.
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    Senior Member denniskee's Avatar
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    Default Re: Getting a Four Third system simply for the x2 crop factor?

    but why cant u just crop for example :

    a 70-200 f/2.8 mounted on a ff dslr than go home crop the image by 1/2?
    photography makes one sees things from all angles.

  3. #3

    Default Re: Getting a Four Third system simply for the x2 crop factor?

    Quote Originally Posted by denniskee View Post
    but why cant u just crop for example :

    a 70-200 f/2.8 mounted on a ff dslr than go home crop the image by 1/2?
    cropped image = enlarged pixels in the case of serious cropping. On a Full Frame, a telephoto 70-200 seems kinda wasted but thats my opinion.
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  4. #4

    Default Re: Getting a Four Third system simply for the x2 crop factor?

    does getting a 4/3 system mean going on a different system from what you currently have? if yes means you cant use your existing lenses and you have to buy new lenses which means no economies of scale.

    imo a 1.6x crop factor is not much different from 2x.

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    Default Re: Getting a Four Third system simply for the x2 crop factor?

    Quote Originally Posted by Reportage View Post
    cropped image = enlarged pixels in the case of serious cropping. On a Full Frame, a telephoto 70-200 seems kinda wasted but thats my opinion.
    Hi there Reportage, i believe cropping dosent involve enlarged pixels unless u cropped a photo and enlarged the cropped area back to its original resolution or to a bigger print size. If thats the case you might want to check out the new High Resolution APS-C cameras as they are already cropped to 1.6x and the resulting 400mm fov would be of higher resolution.

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    Default Re: Getting a Four Third system simply for the x2 crop factor?

    Quote Originally Posted by Reportage View Post
    If use a 70-200 f/2.8 that would mean 400mm at f/2.8 which is pretty cost effective.
    Because you don't get the DoF control of a 400/2.8 nor do you get the noise performance of a FF.

    You do, of course, as you point out, save a bucketload of .

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    Senior Member wildcat's Avatar
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    Default Re: Getting a Four Third system simply for the x2 crop factor?

    Quote Originally Posted by Jed View Post
    Because you don't get the DoF control of a 400/2.8 nor do you get the noise performance of a FF.

    You do, of course, as you point out, save a bucketload of .
    This is true, plus the number of lenses available for 4/3 and especially m4/3 are still limited compared to Canikon. I am moving the normal way, i.e. from m4/3 to Nikon 1.5x cropped and maybe a couple of years from now, to FF.

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    Senior Member giantcanopy's Avatar
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    Default Re: Getting a Four Third system simply for the x2 crop factor?

    i would probably adopt it for the compactness and the cross mounting possibilities rather than the crop

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    Default Re: Getting a Four Third system simply for the x2 crop factor?

    Quote Originally Posted by Reportage View Post
    If use a 70-200 f/2.8 that would mean 400mm at f/2.8 which is pretty cost effective.
    Add a further 2x teleconverter for a maximum 35mm equivalent focal length of 280-800mm.
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  10. #10

    Default Re: Getting a Four Third system simply for the x2 crop factor?

    The poor dynamic range of 4/3 kills it for me.
    Alpha

  11. #11

    Default Re: Getting a Four Third system simply for the x2 crop factor?

    Quote Originally Posted by Reportage View Post
    If use a 70-200 f/2.8 that would mean 400mm at f/2.8 which is pretty cost effective.
    Dun think there is such a lens in the 4/3 range .....

    BUT yes, if teles are what you are interested, then the 4/3 system does gives better value. More compact allowing for better handheld. Compare the 50-200/f2.8-3.5 Zuiko to ANYTHING in the Canikon system and you'll NOT find much equivalent. Esp the IQ for the price.

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    Default Re: Getting a Four Third system simply for the x2 crop factor?

    Quote Originally Posted by Reportage View Post
    If use a 70-200 f/2.8 that would mean 400mm at f/2.8 which is pretty cost effective.
    I'm assuming that the lens you are intending to use is for 35mm full frame format?

    I believe it's a very bad idea, unless you are using a tripod all the time.

    The handling will be lousy and you risk breaking your mount (and the adapter) when you handhold it.

  13. #13

    Default Re: Getting a Four Third system simply for the x2 crop factor?

    mounted my 70-200 on my PEN-1 and in video mode..

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    Member 9V-Orion Images's Avatar
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    Default Re: Getting a Four Third system simply for the x2 crop factor?

    Quote Originally Posted by seafood View Post
    Dun think there is such a lens in the 4/3 range .....
    Sigma.
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  15. #15

    Default Re: Getting a Four Third system simply for the x2 crop factor?

    Quote Originally Posted by 9V-Orion Images View Post
    but that is a 35-100mm, equivalent to 70-200 f2.8 on FF nia, TS is talking about a focal length equivalent to 140-400mm..

  16. #16

    Default Re: Getting a Four Third system simply for the x2 crop factor?

    Quote Originally Posted by 9V-Orion Images View Post
    You are right

    http://www.sigmaphoto.com/shop/70-20...o-hsm-ii-sigma

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    Member 9V-Orion Images's Avatar
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    Default Re: Getting a Four Third system simply for the x2 crop factor?

    Quote Originally Posted by miaoteh View Post
    but that is a 35-100mm, equivalent to 70-200 f2.8 on FF nia, TS is talking about a focal length equivalent to 140-400mm..
    There is a vertical scrollbar at the side of a browser for a reason and I did said Sigma.

    There is also a Olympus Zuiko Digital ED 90-250mm f/2.8 if you need an even longer reach.
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    Senior Member denniskee's Avatar
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    Default Re: Getting a Four Third system simply for the x2 crop factor?

    Quote Originally Posted by Reportage View Post
    cropped image = enlarged pixels in the case of serious cropping. On a Full Frame, a telephoto 70-200 seems kinda wasted but thats my opinion.
    sorry, i still dont understand this.

    if i took a photo using the same lens on a ff dslr eg 5dmkll, than crop the image by half, u mean the image degrade to be worst than using same lens but shot with a 4/3 camera, eg oly e3?
    photography makes one sees things from all angles.

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    Senior Member giantcanopy's Avatar
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    Default Re: Getting a Four Third system simply for the x2 crop factor?

    Quote Originally Posted by denniskee View Post
    crop the image by half,
    the 35mm sensor area is 3.5x larger than the micro 4/3 sensor, need to crop more than half ..

  20. #20
    Senior Member denniskee's Avatar
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    Default Re: Getting a Four Third system simply for the x2 crop factor?

    Quote Originally Posted by giantcanopy View Post
    the 35mm sensor area is 3.5x larger than the micro 4/3 sensor, need to crop more than half ..
    hahaha, i thought since oly is 2x crop sensor, so half the ff sensor lor, i forgot about the difference in aspect ratio.

    but should there be difference?
    photography makes one sees things from all angles.

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