gordon_kraeger1
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Posts posted by gordon_kraeger1
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I have come up with a satisfactory fix for the zoom creep on this
lens. It's a little detailed, but if any one is interested just e-
mail me and I'll get back to you.
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OK. This is what I wanted to get a handle on; it does rely on pentaprism size. Thanks.
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I have noticed a couple of mentions about the relatively small view
finder area compared to the actual view of the camera. I have a 7E
and have had a Rebel 2000. When looking at the specs these
percentages of view through the view finder get better with the cost
of the camera. This kind of defies logic. Are the lenses not the
same? Is the view finder frame encroaching on the view? It just
seems like a problem that shouldn't have to be. Is there a
characteristic of view finder image compared to actual image that
makes it a matter of being more expensive to approach 100%?
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Can I find out how many shutter activations there have been on my
camera or is this something only the factory can do?
Fix for Canon 100-300 f4.5-5.6 USM lose zooming.
in Canon EOS Mount
Posted
Sorry gentlemen; I wasn't trying to be difficult. I just didn't want to take up room on the forum to give dimensions and all. Basically, I've looked for a way to externally apply some friction to the lens zoom mechanism for quite some time. I first thought of a band of neoprene, but to make a circle of neoprene it has to be stitched and there's no stretch to work with then. Next I thought of a wide rubber band, but couldn't find any of the width and circumference needed. Then I saw a product made by "Velcro" called "One Wrap". Its a 3/4" wide velcro tape that has the loops on one side and the hooks on the back side. I found mine at Ace hardware; 3 feet for $4.
Cut it to length with some to overlap, add a very thin second layer to compensate for the slight neck down of the lens barrel and wrap it tightly aroung the lens barrel and zoom collar just ahead of the focus ring. The suzzy loop side goes in toward the lens and creates just enough friction to keep the lens from self-zooming by gravity. It works well and I can still operate the focus ring by hand when needed. Not too sophisticated, but it's working.
Again, if you need to get some photos of the process, just e-mail me.
Enjoy!
Gordon