Calculating focal length conversion, DX -> FX, FX -> DX

Started May 21, 2020 | Discussions thread
ForumParentFirstPrevious
Flat view
river251
river251 Regular Member • Posts: 467
Calculating focal length conversion, DX -> FX, FX -> DX

Is this correct?

On a DX camera,

A 100mm FX lens will have an effective focal length of 150mm

A 100mm DX lens will have an effective focal length of 100mm

On an FX camera,

A 100mm FX lens will have an effective focal length of 100mm

A 100mm DX lens will have an effective focal length of 67mm

Thank you, be safe.

Jim

ForumParentFirstPrevious
Flat view
Post (hide subjects) Posted by
ForumParentFirstPrevious
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow