Question on using a FF lens in crop mode on A7RIV

Started 2 months ago | Discussions thread
noel2 Senior Member • Posts: 1,095
Re: Question on using a FF lens in crop mode on A7RIV
2

Brian_Smith wrote:

The aperture of a full frame lens remains the same in crop mode.

Absolutely.

Aperture is focal length divided by diameter of the entrance pupil. It is independant of the sensor size.

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