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Thread: MF Crop sensor vs 1.1 sensor

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    MF Crop sensor vs 1.1 sensor

    I'm trying to upgrade from CFV16 (1.5x Sensor) to CFV39 (1.1x Sensor).
    Besides the difference of FOV, is there a difference of DOF as well?

    In 35mm, it is my understanding that, for instance, 5D MkII has thinner DOF versus the 7D....
    Is it the same way with the CFV16 and CFV39?

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    Re: MF Crop sensor vs 1.1 sensor

    If you stood in the same place with both cameras the DOF is the same.

    However with a larger sensor in order to fill the frame with the subject you would be using a larger frame then you'll be standing closer to the subject and the thing DOF effect will be enhanced.

    I know this both from theory and from real world use: A P45V (1.1 crop sensor that can mount vertical or horizontal) provides a smaller DOF (at any given aperture) than a P20 (the same sensor as the CFV16), assuming you are framing the subject the same size within each frame.

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    Re: MF Crop sensor vs 1.1 sensor

    When using the same optics/lens, the smaller sensor will have less DoF.

    When using the same field of view, the smaller sensor will have more DoF.

    The change in depth of field is proportional to the crop factor. With the same lens and compared to 35mm chip, an APS sensor (crop factor 1.5) will have about one less stop and a m4/3 (crop factor 2) will have two stops less, meaning if you were using a lens designed for 35mm and the aperture was set to f/11, you would use the f/8 Dof lens scales for the APS and the f/5.6 scales for the m4/3.

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    Re: MF Crop sensor vs 1.1 sensor

    Thank you so much for the kind info....
    It cleared my misinformed learning......

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    Re: MF Crop sensor vs 1.1 sensor

    it is exactly same as with DSLRs.

    Smaller sensor/film doesnt change DOF by itself (same goes for increasing size btw) It changes circle of confusion, and thats about it (hence why bokeh looks hell of the lot tastier on larger fims/sensors and why lenses designed for 35mm film look worse on digital sometime when comparing out of focus parts).

    But since you trying to get comparable sizes in frame - you have to move out (away from subject). And as you moving out - your DOF increases.

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