<p>This was from earlier this year, but I don't believe anyone picked up on it - Al Reynolds (ibat400) shows how to first (semi-permanently) attach a filter mount to a Nokia 808 back over, then how to use it to take extreme long exposures and incredible macro shots. You might not want to try this at home, but the results are certainly spectacular.</p><p>Here's the set-up:I thought that Sugru might be the ideal way of fixing the filter mount to the spare back cover, although there was a question of whether it would adhere to the 808's polycarbonate material. I figured if I didn't stick then it would at least have been moulded to the right shape and I could superglue it to the cover afterwards.</p><p>I started by taking the cover off the 808, inserted a layer of clingfilm over the whole back including the camera hump, and then put the cover which I was modifying on over the top of the clingfilm:</p><p>Sugru doesn't stick to clingfilm, so this allowed me to fix the filter mount to the replacement cover without sticking anything to the camera hump. I then fixed the filter mount in place and trimmed the Sugru to fit. At the moment I am waiting for the Sugru to cure, which takes 24 hours. Here are some photos of the modified back cover:</p><p><a href="http://www.allaboutsymbian.com/flow/item/18468_Adding_DSLR_filters_to_a_Nokia.php">Keep reading...</a></p>