Reply To: What practical use of connection between Image Render Output Dimensions and Camera Sensor Size?

Forum Archive What practical use of connection between Image Render Output Dimensions and Camera Sensor Size? Reply To: What practical use of connection between Image Render Output Dimensions and Camera Sensor Size?

#57210
Ingmar Franz
Participant

    A smaller sensor size is basically cropping out a portion of what is projected, which makes it appear more zoomed (when technically it isn’t)

    I hope that made sense.

    Yes, it does make sense since this is the “crop factor” (https://en.wikipedia.org/wiki/Crop_factor). If you print this image from a smaller sensor onto the same format as you did before with an image from a bigger sensor, you have to scale it up which makes it look as if it had been taken with a longer focal length (= zoomed in), but this is an illusion since changing the sensor size doesn’t influence the depth of field (DOF) but the focal length does (the longer the focal length the less DOF and the smaller the viewing angle). 

    Where I’m still wondering is why in the last image from above the camera has zoomed out when switching from “Auto Sensor Fit” to “Vertical Sensor Fit” although the focal length is still 35mm and the image sensor width hasn’t changed.

    With a render image size of 4700 x 80 und “Vertical Sensor Fit” the output image looks as if taken with a wide angle lens at a viewing angle of 180 degrees:

     I don’t know whether this would be the case if there where a real digital camera where you could select such an extreme format.