edward_h Posted March 31, 2005 Share Posted March 31, 2005 Yesterday I noticed my 35/2 wouldn't autofocus out of minimum focusing distance: when I tried to focus on something far away it wouldn't budge. I had to manually turn the ring a few times before it managed to autofocus again. Anyways, so I goes to the camera repair shop and ask what it would cost to repair it. About half the new price of the lense. :( I'm generally careless with my own equipment and the 35/2 could probably have gotten a bump sometime or other (not that I remember when it could have happened) but anyways: I decided to keep the semi-broken 35 and build some protection for it. I went to the hardware store, looked around and found a plastic pipe round about the same diameter as the 35. I sawed it down to about 7cm (5.5cm is the length of the 35), put on some masking tape (which will be replaced with black electrician's tape sometime in the future) and then squeezed it onto the 35. The result, as y'all can see below, is a slightly longer 35/2 that now can take a beating; all external forces hitting the front of the pipe are directly transfered straight to the camera body which means the lens (and bayonet mount) go unharmed. Also, the protective pipe acts as a small lens hood. I could have made the pipe several centimeters longer which would have improved the hood characteristics, but I wanted to keep it compact. PS: The lens now focuses completely fine, for some reason. Maybe the stuck focus was a sign for me to go get some protection for it?<div></div> Link to comment Share on other sites More sharing options...
oofoto Posted March 31, 2005 Share Posted March 31, 2005 I wish I had as much time as you Edward ;) Link to comment Share on other sites More sharing options...
oofoto Posted March 31, 2005 Share Posted March 31, 2005 Have you dis-canoned your Canon also? Link to comment Share on other sites More sharing options...
edward_h Posted March 31, 2005 Author Share Posted March 31, 2005 > Have you dis-canoned your Canon also? Yeah. I'm not into large logos and being a walking advertisement. I've taken the tape off now, btw. A couple of pieces of pipe (from the sawing) will probably fall off, but it attracts less attention being all black. Link to comment Share on other sites More sharing options...
rob_murray Posted March 31, 2005 Share Posted March 31, 2005 Looks heavy duty but you lose the ability to use manual focus? Link to comment Share on other sites More sharing options...
shambrick007 Posted March 31, 2005 Share Posted March 31, 2005 "all external forces hitting the front of the pipe are directly transfered straight to the camera body which means the lens (and bayonet mount) go unharmed."<p>Except for the tangential lateral forces at the end of your pipe that get transferred directly to the lens mount.<p> You gotta stop hanging out w/those black electrical tape Leica shooters... Link to comment Share on other sites More sharing options...
tjavery Posted March 31, 2005 Share Posted March 31, 2005 The same thing has happened to my 50mm f/1.4. The lens had taken a hard hit to the front (enough to jam the lens cap down into the filter threads), and now the AF won't rotate out of the minimum focus region. I have to manually rotate the focus ring a bit, and then the AF motor will take over. I use a generic rubber hood that screws into the filter threads, and it doesn't offer much protection. But I've noticed that the real hood (from Canon) will fit bayonet-style onto the main barrel itself. This hood, which is hard plastic, would definitely guard against shock-loading the inner lens barrel. -TJ Link to comment Share on other sites More sharing options...
edward_h Posted March 31, 2005 Author Share Posted March 31, 2005 > Looks heavy duty but you lose the ability to use manual focus? Yeah, but I never manually focus anyways so it's no loss for me. Link to comment Share on other sites More sharing options...
niels_de_boissezon1 Posted March 31, 2005 Share Posted March 31, 2005 Use a lens hood to protect your lens.I've used to use the ET-65 hood (the one for the 85/1,8). It does not vignette with either a 1,3 or a 1,6 crop camera. You can't reverse it for storage though... Link to comment Share on other sites More sharing options...
edward_h Posted March 31, 2005 Author Share Posted March 31, 2005 > Use a lens hood to protect your lens. How do you attach a hood to the 35/2? To the filter thread? In that case it's not going to help my any from shocks and harsh treatment. I sure don't see where else one can attach a lens hood to it. Link to comment Share on other sites More sharing options...
awindsor Posted March 31, 2005 Share Posted March 31, 2005 The hood for the 50 1.8 actually makes the lens more vulnerable. It is lateral force applied to the moving inner lens barrel which causes the lens to malfunction. The inner lens barrel is the attachment point for the hood. Those lenses where the lens hood is attached to the rigid outer barrel provide more protection. Link to comment Share on other sites More sharing options...
niels_de_boissezon1 Posted April 3, 2005 Share Posted April 3, 2005 Edward> Not on the filter thread The EW-65, ES-65 and the ET-65 are all clip-on hoods that can be clipped on the outside of the lens. The ET-65 is ,obviously, the most efficient hood. The EW-65 is the hood that Canon recommends for the 35/2. Try it out - you can get a used ET-65II for 20$ and it works very well... Link to comment Share on other sites More sharing options...
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