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Some third party manufacturers design their lenses in such way that in order to disassemble them you have to remove the nameplate. And these are most likely made of aluminum – very soft metal, easy to scratch or bent, so it looks very unprofessional if you are not careful while removing them. Here I’ll show you how to do it safely. So, before you start, you need sharp and strong tweezers – this is important, with poor quality tweezers you are guaranteed to make scratches, also a tiny amount of isopropyl alcohol, and optionally a label backing paper and x-acto knife or some other sharp blade.Put a couple drops of alcohol around the edges. Be careful not to flood this whole lens. It immediately goes around on its own. Let’s put some more. And now I’m going to wait about 1 minute or maybe less. Once it dries up it might leave a bit of white residue, but don’t worry about this, it’s easy to get rid of later. Although it is a good idea to test the alcohol on your particular lens models nameplate, to make sure it doesn’t react in some weird way. This plate is held by a double-sided sticky tape, so the alcohol will make it slightly softer and then evaporate, leaving this tape perfectly intact. Let’s add some more and wait again. I usually repeat this 2 or 3 times. Now I insert the tip of my tweezer over here, between the edge of the nameplate and this plastic ring. The goal here is to do it in such way that there are no marks left on either the plastic barrel or the nameplate itself. I start in one of the corners and pull it gently. I pull it very gently but with a steady force for like 15 or 20 seconds. It should come off easily. If it doesn’t. Don’t force it, reapply the alcohol one or 2 more times and try again. Okay, now I move to the other corner. It starts to move and it’s loose now. So this is good. Let’s go to the other side. Again, be very careful don’t leave any marks or scratches. And again, I pull it gently applying very little force for several seconds. Okay and it’s done. Actually, this one came off surprisingly easily, may because it’s a brand-new lens. Usually it takes a bit more time to get it loose. It’s in perfect shape and there are no kinds of marks on the nameplate or plastic edges around. It’s perfectly fine. This is the double-sided sticky tape that’s holding it. The alcohol will evaporate within a minute or so and it’s going to hold very well, when I put it back in place, after I’m done working with this lens. Now, same process for this plastic window. This one should come off even easier. But still, I’m extremely careful with it. Because there is just no way I could logically explain to any of my customers - why I left a nasty scratch on his focusing window. There is just no excuse. And even if I wanted to replace this part. There is still no way I could explain to my customer why he has to wait an additional week or 2 to get his lens back. For popular lenses repair shops usually have many parts in stock, but this one is not so popular. Overall, what my customers often don’t realize, is that my job is mostly about being careful and not destroying stuff. The whole diagnosing, repair, and all other things come later.
Hi, I am Mike, independent camera repair tech with over 10 years of experience, working specifically on cameras and lenses. I love it! And from time to time I record a video showing some teardowns, reviews, repair tips of photo gear. Subscribe if you wish, there is more coming soon! All questions are welcome here!!! Although, I definitely don't know all of the answers… :)
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