I am looking to upgrade the lens on my canon 550d. An EF-S 18-135mm f/3.5-5.6 seems to be an all rounder for my needs. But i am thinking if there is any compatibility issue or such with a USM compared to an STM lens with the specific camera model.

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    Possible duplicate of Why do higher end lenses use USM instead of STM? – OnBreak. May 28 '19 at 23:25
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    Voting to close as a dupe because the answer of that question should show the pro's and con's of each well enough for you to make a purchase decision. If not, please edit your question to include why the linked one's answers do not provide you what you need. Thanks! – OnBreak. May 28 '19 at 23:25
  • Basically i was hoping to clarify if there will be any compatibility issue with the 550d on the USM or STM lens. – user85045 May 28 '19 at 23:51
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    Any EF-S or EF lens should work on your camera regardless of features such as USM/STM. Any competent camera retailer would be able to verify compatibility with a specific lens before you order as well. – trognanders May 29 '19 at 0:01
  • Ah okay. That is awesome thank you. – user85045 May 29 '19 at 0:14

Any Canon EF or EF-S lens made since the EOS system was introduced in 1987 is fully compatible with your EOS Rebel T2i/550D. This is true regardless of whether the lens in question uses a "micro-motor", USM, or STM to move the lens' focussing elements.

For the differences and advantages/disadvantages of using each type of lens, please see:

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