Question about Canon 75-300mm f/4-5.6 III USM EF Lens

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I would like to disassemble my canon 75-300mm lens

Can anyone please give me a step by step instruction to disassemble a canon 75-300 mm lens for cleaning. Thanks and regards

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  • kakima May 12, 2010

    Before you take it apart, consider this: Do you have a lens collimator and other equipment necessary to make sure you reassemble it properly? If you don't get the elements aligned properly, the results will be worse than what you're getting now. If you don't have the proper tools, I suggest you leave the job to a professional.

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6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

  • 37 Answers

SOURCE: quantaray 300 mm mirror lens

You can get an M42 adapter; try bhphotovideo.com.

Posted on Jan 20, 2008

cammedic
  • 667 Answers

SOURCE: tamron 28-300mm lens disassembly help

Both, But start at the rear to remove the electronics and the outer barrels. Remove any rubber grip to expose 'hidden screws'. I would mark everything or document with pictures during disassembly.

Posted on Jan 29, 2008

  • 2 Answers

SOURCE: Quantarary for Canon AF 75-300 mm F4-5.6 25-166-4561

I have been researching this problem and found there's nothing you can really do. Appararently, the quantaray, being an older lens, wasn't made to work with this latest era of cameras. Though it might work perfectly with your older camera, its technology is outdated as it relates to digital cameras1.gif and can't mesh with the latest and greatest. By the way, most of my questions were answered on the Digital Camera1.gif Resource page (www.dcresource.com

Posted on Mar 14, 2008

jcdill
  • 121 Answers

SOURCE: vivitar 75-300mm lens

The Vivitar brand has been bought and sold quite a few times in the past 10 years.

KEH Camera has quite a few used Vivitar lenses listed on their website. They are priced very low, from just $4 to $49, so it's highly unlikely that the lens is worth repairing.

Posted on Dec 23, 2008

  • 130 Answers

SOURCE: Water inside the lens (Canon EF-S 17-85mm F4.5-f5.6 lens)

if it is only fogged you can blow hot air on the lens while fully zoomed in and after the water has evaporated, zoom out to compress the moist air out. do this several times.

Posted on Jun 13, 2009

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Can you give me the instructions on how to assembly/disassemble the ef 75-300 f/4* lens?


you can get it on ebay.com for cheap price .But first - try to look it for free on google.com. Sometime you can easily find it.

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My name is Rick and I'm a professional repair technician with over 20 years in the business and have repaired many of these. I'm semi retired and work from home with little overhead so I can keep repair costs low. If you decide to have the camera repaired, please click HERE for a directory listing that suits your needs.


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