Fixing Sony 140GM lens collar knob

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BlackRockArt

BlackRockArt

Well-known member
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Hi y'all, I would like to share a little repair job.

Two weeks ago I was in Yosemite National Park to take pictures of Firefall, in the middle of it, the 100-400mm G Master lens got stuck when I tried to rotate the lens collar ring. It just became so hard to turn, I thought I was going to break it.

After I got home I did a search on Youtube to find it's the lens collar knob wearing out. Credit goes to Malcolm Walker for his excellent video guidance.

Oliver
 
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sony140GM01.jpg
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On the left is the worn out knob piece, on the right is the new improved design: now it's the alumnim piece.

NOTE the part number.
 
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sony140GM05.jpg
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I used a small flat head screw driver to push out the cap, need the screw

Go Slow, this thing can fly.
 
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Malcolm used a sharp knife CAREFULLY shaved off a tiny bit of the new knob so that the screw can sit in fully. I think I will go a different method.


sony140GM07.jpg
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I got the 100-400GM lens as soon as it came out, since then it's been one of my most used travel & nature wild life lens. It was used for landscape photography extensively along with 24-70mm.

It's light, compact, the image quality is great.

Here are a few shots I have taken.

Oliver

Great Egret

https://flic.kr/p/2mV8VjG

Pelicans

https://flic.kr/p/2mVdLxC

Bluebirds

https://flic.kr/p/2mVfS7h

24 BRC03283YosemiteFirefall45CropBCG.jpg
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