Canon EF 70-300mm f/4-5.6 IS USM lens disassembly

[@romanr.soroka1940]

Love this channel. Has the most detailed info about assembly and disassembly

[@CamerasLensesEtc]

Thank you for your comment, I'm glad that my videos have helped you.

[@yuedianazhang7635]

hi thx for the share, could you do a dissembly video on canon ef 70-300 is II usm please, i have one with dust in front lens but dont know how to open to clean it, many thx

[@CamerasLensesEtc]

I don't have that lens, so I'm not going to have video about it.

[@raishul]

Hi, Excellent video! By the wat, I have one of this same lens and the issue of the lens is: -The lens shakes violently up and down during focusing while stabilizer is on in either mode. I tested with different full frame DSLR with same issue. During shaking the LCD is turned off and the same shaking happens in the optical view finder. I cleaned the outside electrical connections with 90 percent rubbing alcohol. The shaking does not happen when stabilizer is off. Please advise.Thanks in advance

[@CamerasLensesEtc]

Most likely the IS unit is broken, and needs to be replaced.

[@raishul]

​​@@CamerasLensesEtc Thanks a lot for the advice. Now the lens shakes violently even I turn of the stabilizer and AF. The apurture numbers goes flickers 0 to 5.6 and live view and view finder gets closed. Sometimes, both AF and stabilzer works fine for few seconds and can take very sharp pictures though. Is this can be apurture machanism issue?

[@CamerasLensesEtc]

@@raishul It is unlikely aperture problem. My guess would be the IS unit. Also, check and clean the connectors of the flat cables which goes into the PCB.

[@raishul]

@@CamerasLensesEtc Thanks a lot, will try

[@СергейВладимирович-у7ч]

Красавелла! Спасибо)

[@CamerasLensesEtc]

You're welcome!

[@shady_mixes]

bro u need to turn up the volume man

[@CamerasLensesEtc]

bro just crank up your hearing aid