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What to look for when buying an extension tube?

Started Nov 27, 2018 | Discussions thread
Lemming51
Lemming51 Forum Pro • Posts: 15,278
And compatibility with EF-S lenses

R2D2 wrote:

Just make sure they're “auto,” and have the electronic pass-through contacts.

R2

And compatibility with EF-S lenses.  Older model extension tubes (Canon's own and third party) have hard plastic internal baffles that interfere with the extended rear mount of EF-S lenses.

For example, Canon's original Extension Tubes EF 12 and EF 25 cannot mount to EF-S lenses, but the current model EF 12 II and EF 25 II can.

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