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Thread: 15-85mm on Crop camera = 24-135mm on Full Frame??

  1. #1

    Default 15-85mm on Crop camera = 24-135mm on Full Frame??

    So if i would have switch from a Canon Crop camera with 15-85mm to a FF camera with 24-70mm lens.

    The widest side is the same, when i view on both camera??

    Is this correct??
    Canon EOS 7D | 15-85mm | 50mm f1.8 | Sigma 35mm f1.4 A | 580 EXII

  2. #2

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    Yes. The angle of view should be fairly similar at the widest setting of each setup.
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  3. #3

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    Depth of field will be diff... eg 2.8 on cropped sensor and on FF will give diff DOF

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    Senior Member ZerocoolAstra's Avatar
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    Default Re: 15-85mm on Crop camera = 24-135mm on Full Frame??

    Quote Originally Posted by blazin View Post
    So if i would have switch from a Canon Crop camera with 15-85mm to a FF camera with 24-70mm lens.

    The widest side is the same, when i view on both camera??

    Is this correct??
    Yes the angle of view should be similar (15mm on crop vs 24mm on FF)
    If you're talking abt looking through the viewfinder, there may also be differences due to different cameras' VF coverage (eg 96%, 100%, etc)
    Exploring! :)

  5. #5

    Default Re: 15-85mm on Crop camera = 24-135mm on Full Frame??

    I am using a 7D so should be 100% VF rite??
    Canon EOS 7D | 15-85mm | 50mm f1.8 | Sigma 35mm f1.4 A | 580 EXII

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    Senior Member ZerocoolAstra's Avatar
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    Default Re: 15-85mm on Crop camera = 24-135mm on Full Frame??

    Quote Originally Posted by blazin View Post
    I am using a 7D so should be 100% VF rite??
    According to Canon's site, 7D is 100% viewfinder coverage.
    5D mkIII is 100% coverage
    5D mkII is 98% coverage

    So if comparing 5DmkII @ 24mm vs 7D @ 15mm, my assumption is that you see a SLIGHTLY wider view through the 7D's viewfinder

    Details... details.... don't let that get in the way of good photography
    Exploring! :)

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    Moderator catchlights's Avatar
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    Default Re: 15-85mm on Crop camera = 24-135mm on Full Frame??

    Quote Originally Posted by ZerocoolAstra View Post
    According to Canon's site, 7D is 100% viewfinder coverage.
    5D mkIII is 100% coverage
    5D mkII is 98% coverage

    So if comparing 5DmkII @ 24mm vs 7D @ 15mm, my assumption is that you see a SLIGHTLY wider view through the 7D's viewfinder

    Details... details.... don't let that get in the way of good photography
    photographers need to pay attention on the details IN THE PHOTOS, that separates between a good photographer and a sloppy photographer.
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    Senior Member ZerocoolAstra's Avatar
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    Quote Originally Posted by catchlights

    photographers need to pay attention on the details IN THE PHOTOS, that separates between a good photographer and a sloppy photographer.
    Yes that is so true
    Exploring! :)

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    Member SyncGuy's Avatar
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    Quote Originally Posted by trd2970
    Depth of field will be diff... eg 2.8 on cropped sensor and on FF will give diff DOF
    Hmm.... Sorry to butt in. But I "think" this sounds weird.

    DOF remains the same, be it crop or FF, at the same distance, with the only difference of having the "further" flexibility of having the ability to move in closer with FF as the FoV would be wider; therefore affecting the distance to subject to background distance which then will affect the DoF, right?
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    Member Unagidon's Avatar
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    Default

    Quote Originally Posted by SyncGuy

    Hmm.... Sorry to butt in. But I "think" this sounds weird.

    DOF remains the same, be it crop or FF, at the same distance, with the only difference of having the "further" flexibility of having the ability to move in closer with FF as the FoV would be wider; therefore affecting the distance to subject to background distance which then will affect the DoF, right?
    Its not weird, if subject is in the same distance, both camera crop and ff with focal length at 50mm (35mm equivilent and crop should be around 35 mm), ff should have a smaller dof compare to the crop

    This is why when you go into bigger format focusing accuracy have to be very accurate at wide aperture
    Last edited by Unagidon; 19th August 2012 at 09:40 AM.

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    Default Re: 15-85mm on Crop camera = 24-135mm on Full Frame??

    same angle but you will think that your crop sensor body will not be that wide as the viewfinder is smaler than the full frame camera...

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    Member Chrissp's Avatar
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    Default Re: 15-85mm on Crop camera = 24-135mm on Full Frame??

    Quote Originally Posted by SyncGuy View Post
    Hmm.... Sorry to butt in. But I "think" this sounds weird.

    DOF remains the same, be it crop or FF, at the same distance, with the only difference of having the "further" flexibility of having the ability to move in closer with FF as the FoV would be wider; therefore affecting the distance to subject to background distance which then will affect the DoF, right?
    Right.
    The camera and lens do not make bad photos, the photographer does.

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