This question already has an answer here:

Are all the lenses compatible with 7d? Especially EF-S? Anyone having a autofocus issue with 55-250mm IS lens?

marked as duplicate by Philip Kendall, Hugo, Matt Grum, chuqui, Caleb Mar 9 '15 at 18:58

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • 2
    The question linked above should answer your basic question about compatibility, but it sounds like you're having an additional, specific problem with the 55-250mm lens. Can you elaborate on that? – mattdm Mar 9 '15 at 12:36
  • I have a 7D and 55-250mm IS and they work fine together. – Conor Boyd Mar 9 '15 at 22:07
  • The 7D is fairly well known to have the worst frame-to-frame AF consistency of any of Canon's recent digital bodies. And not just with consumer grade lenses such as the 55-250mm lens. – Michael C Mar 13 '15 at 7:45

Short Answer: Yes.

All EF and EF-S lenes are compatible with your 7D. You should not have any autofocus problems if camera and lens work well. Otherwise you should check the lens on an other eos (if you can) respectively the camera with other lenses.

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