Adam Savage (of Mythbusters fame) has risen to internet prominence in recent years on the Tested network. A nerd hero, Savage has long been a revered gadget hobbyist and DIYer, and on the latest episode of his web show entitled ‘Still Untitled’ he touched on repairing a lens for his friend and co-host Norman Chan.
Chan had recently purchased a Canon 5D Mark IV and had taken it into a cave to take some pictures when it was knocked from his hand and fell to the ground, lens first. The Canon EF 24-70mm f/2. 8L II, worth almost US$2,000 took the brunt of the hit. The image is painful to even think about, I know. Yet another reminder to always use a neck strap, folks!
The relevant segment starts at 11:20
Chan realised that although the camera was undamaged, the front part of the lens had been cracked, but couldn't tell if it was the glass or the protective filter that had smashed. Handing it over to his trusted friend Savage, Chan kept his fingers crossed that the lens could be recovered.
Setting to work, Savage describes how he first used a tiny hammer to extract the glass from the filter, then set about trying to remove the remaining filter ring from the camera using a variety of tools. With each attempt, the damaged filter ring remained firmly in place until Savage hit on an idea that would provide him with more leverage. Using a bandsaw (yikes!), he cut tiny grooves into the filter ring directly across from one another, then slotted a tiny piece of metal into the grooves that would act as a giant screwdriver. He then twisted the lens until the filter ring began to budge and was successfully removed, with the lens itself fully intact.
via YouTube/DIYer
YouTuber DIYer has demonstrated this technique in the video below, where he uses a slightly less dangerous method involving a file rather than a bandsaw, but with the same results. If you’re not a DIYer this might be a tricky job to emulate at home, but it’s good to know that a broken filter doesn’t have to stay stuck to your undamaged lens, but maybe Chan should invest in a lens hood next time.
. digitalrev.com
2016-10-31 03:00