Tiny zoom movie full#

Yes, it is just an illusion that makes the smaller cropped image (is smaller in mm size) to appear as if it were actually zoomed larger.Ī camera with a smaller sensor will crop the image smaller, resulting in a smaller field of view. If with same focal length, larger sensors see wider views, and smaller sensors see a smaller field of view. If both sensor sizes are using lenses of the same focal length (and assuming all lenses are proper choices to at least cover their referenced sensor size), the larger frame shows a Field of View that is X times larger (a wide angle view) than the smaller cropped sensor which crops the lens Field of View smaller.

Tiny zoom movie full#

The smaller image necessarily requires X times greater enlargement to reach the same viewing size of full frame (for both to be the same specific print size for example). Two frame sizes with the same Aspect Ratio could compare widths or heights without error, but different aspect ratios can only meaningfully compare the diagonals.Ī Crop Factor value of X is a size ratio that means the 35 mm film diagonal is X times larger than the diagonal of this sensor size.

Therefore, comparing the diagonals is important to account for Aspect Ratio differences. Different aspect ratio frame shapes can fit in the circle, but their sizes all have the same diagonal, which is the largest dimension of the frame. The diagonal is the important comparison, because the view from a lens is a circular area, and the largest rectangular frame that can fit in the circle has a diagonal equal to the diameter of the circular lens view. Full Frame is our 35 mm standard of comparison, of 1x itself. So “Full Frame” and “1x crop” are synonyms for the size of 35 mm film. A digital sensor this same size is called a Full Frame digital sensor (i.e., not cropped as compared to 35 mm film), with crop factor 1x.