UV Filter "stuck" on Lens After Drop

Discussion in 'Canon EOS' started by david_jones|16, Oct 17, 2003.

  1. I need advice on the best/safest way to remove a damaged filter from a lens.
    I'll explain why:

    My ESO 10D and attached 17-40 L took a nosedive from my shoulder bag
    when somebody accidentally backed into me. The kit fell lens first onto a hard
    floor from about 4 ft. Luckily as there were a lens cap, polarizer and UV filter
    on the front which appear to have taken the brunt of the force, the lens itself
    seems upon initial inspection to have survived intact. I've also checked the
    camera and all functionality is there, though only time will tell if the electronics
    have had some sort of damage.

    The point is that after removing the lens hood and polarizer (by force), I'm
    having real difficulty unscrewing the UV which has bent slightly and seems to
    have locked the thread. Any advice on how to get this unscrewed without
    putting too much force on the front of the lens barrel?.

    As the UV glass has cracked and there are tiny shards of class on the front
    element of the lens, I need to take extra care not to scratch the coating, just
    incase that I have been lucky enough to get away with it!!

    Anyone been in a similar situation? Any advice will be greatly appreciated

    The only advice I can give in return is.... ALWAYS zip up your camera bag
    when you're carrying it around!!!! :)

    You have to laugh don't you!

    I must compliment Canon on the build quality. Now I'm gald I did'nt go for the
    300D !!!!
  2. This has happened twice with my girlfiends Rebel. Both times the UV ring was bent and the glass badly broken, like in spidered so bad that there were splinters of glass that had fallen out. Both times I managed to remove all the broken glass from filter leaving just the metal ring. The first time I bent it back grabbed it, at point of impack, with needle nose pliers and it turned and I unscrewed it. The second time that didn't work as it was bent very badly. I had to grab the UV ring and twist it until there was a kink that decreased the circumference enought that it popped out. Very tricky. Both times I was able to do it with any damage to lens.

    You have to do this holding the lens upside down to keep glass off the front element of lens. The first one took me umost two hours. The second one over three. Very tedious and nerve wracking, but can be done. The first accident was over two years ago. The second six months ago. I'm glad to say that she has not had a problem with either lens or the camera. Yes, the barrel remained in tact and she can easily screw on and off filters.
  3. I would imagine most any local camera repair shop should have filter wrenches available which should be the safest way to get the thing off, given that you've been unable to do so yourself. Just minimize how much you move the lens around given the possibility of your glass shards scratching the lens coating.
  4. So long as it isn't to badly bent (in which case go to a camera repair person) try pressing the filter ring flat and square into your neoprene mouse matt (or similar soft but 'grippy' surface), and turn the lens anti clockwise. This tip applies to all stuck filters and it increases the gentle leverage you can apply many times. In your case though ensure the broken glass won't distort into the front element, by touching the matt, and therefore scratch it. If you think it will, consider a harder surface, even wood. Many surfaces and materials will give you increased friction and leverage over pure hand power.
  5. Thanks all for your tips. I managed to “peel” back the metal lip that holds the UV inside the filter ring and whilst holding the lens front element downwards popped the glass out. I then used a mini-vac to suck up all the glass before wiping clean.

    Fortunately I was able to get all the tiny shards of glass off the front element without causing any visible harm. I've been very lucky here. There does not seem to be a single scratch on the lens glass, which is what I was mostly concerned about. The body seems to be working fine 24 hours later also which is good. I can live with the filter ring stuck on there until I get time to get hold of the appropriate tools to remove it. Even the lens hood was salvageable. Canon certainly make some sturdy kit.

    Once again thanks for the advice. It certainly paid off.
  6. I think I'd be taking in to a camera shop. I had a similar accident, and wasn't as lucky, the lens barrel had actually jammed.
  7. Off topic. Why do you mount a CPL on top of UV ? Don't you know that excess glass always result in poorer images and that every CPL is also a UV ?

    Happy shooting ,
  8. Oh how i despise computers!I had a great reply posted and lost it all.
    The short version is :relax,the elctronics can take enormous knocks when protected by the lens.It's the structural parts that most often get damaged.
    <BR>The pliers tricks mentioned above work very well.I've straightend metal filter rings with pliers padded with cloth and also done the 'bend inwards' technique to remove totally seized ones many times.All the best with it
  9. I am quite relieved to hear your 10D survived the fall unscathed. My Powershot G3, mounted to a 4 inch tripod, slid off the hood of my Suburban onto asphalt while taking a long sunset exposure (The mall security bozo distracted me). Initially I thought the fall was fatal, but I twisted the zoom element and somehow managed to get the lenses inside working again. It doesn't autofocus quite as fast now though. Having missed my G3 so much until I fixed it convinced me to get the 10D. The G3 is now a great backup camera (came in handy already on a rainy day in Salem, MA).
  10. Yakim, as it happens the CPL was screwed onto the end of the lens, simply as a place to store it. I had left the filter case in the car, so stuck it on the end of the lens as a safe place to hold it whilst i stopped in a cafe for some lunch!. I'm very glad I did. Had the thicker CPL filter not been on the end as well, I don't think the lens would have survived as the UV on its own would not have been sufficient protection for that fall. I take your point with regards to multiple filters and image degradation, but on this occasion the pros far outweighed the cons ;-)
  11. Wow, what a great help this thread was. I dropped my 24-105L a month after I bought my 5D kit. My heart sank but I still did a shoot with it. The AF was fine and everything worked fine. The filter saved my lens but it got stuck badly.

    I first tried with a needle nose pliers, didn't help. Thought about going to keeble and schuchat for help, but today they are closed and impatience got me. So I brought out my big normal pliers and a small file. What a great tool that small triangular file is. I filed two notches 3/4th inch apart, then carefully broke the glass off. Using th big pliers and bent the filter ring back and forth till one of the filed sections broke apart, and then I bent it inwards to make it free from the lens.

    End result - not one single scratch on lens and my 77mm warm filter went on perfectly. L lenses rock, and filters are lifesavers for every lens.

    Now question - does AWB compensate for a warm filter ? Or I must need another uv filter ?

Share This Page