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Understanding Camera Flange Depth: Adapt Old Lenses to New Cameras

Camera Flange Distance is a very important subject to understand if you want to adapt older lenses or lenses from one camera brand to another. Why can’t a Nikon F mount lens be adapted to a Canon EF mount camera? Oppositely, why can you adapt a Nikon F mount lens to a Sony Alpha A7RIII? Flange Depth is your answer.

If you already know about Flange Depth or just want a solution to adapting your fungus-filled pre-war Russian “art” lens to your $2,000 shiny new camera, you can jump straight to the business in our Lens Adapter Guide.

LensFinder has saved you the time of a lengthy google search and had one of our experts on staff curate all the best articles we can find on Flange Depth in one place. You can shop for vintage or new lenses from 1000’s of shooters like you in our LensFinder Browse section.

Flange Depth is the distance from the lens mount to the sensor or film plane. You need a lens with more flange depth than your camera to use an adapter. Adapter works if = Lens Flange Depth > Camera Flange Depth. Ok we’re done.

No? Ok well check out this article from Brian Smith that does a really good job of explaining it.