Crop Factor, Low Light and Aperture with m4/3 lenses?

Started Jun 15, 2014 | Discussions thread
Truthiness Regular Member • Posts: 122
Re: Handevision Ibelux ?

eyeswideshut wrote:

I get the sense you are inferring from enlargements of film using an enlarger lens?


I'll try to simplify this:

  • The lens of the camera draws an image (43mm diagonal on full frame, of which 36mm by 24mm is used by the sensor of film)
  • This image is enlarged to the output size, maybe A4 or whatever by irrelevant means
  • The more you need to enlarge this image, the more the imperfections of the camera lens will show.
  • Because the smaller formats require larger enlargement, the lens used byt the camera needs to have better optical quality than if a larger format is used. (And this is often the case.) Also it means that adapter FF vintage lenses don't necessarily perform as well on m43 than they do on FF.
  • It doesn't matter if the device recording the image the lens draws is an image sensor or film
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