I've been doing some fiddling with hoods for about a year, and here are two items I have built up. (No, these are NOT taken with an EOS; they're quick-n-dirty from an Intel webcam!) Item I: 50 mm screw-on lens hood. http://home.swbell.net/dgweiss/camerastuff/pict0011.jpg This is just a generic collapsible round hood with a generic plastic lens cap chosen to fit the front of the hood. I cut a 2x3 aspect ratio hole in the cap, beveled the edges, covered them in black flocked paper, and glued the cap into the hood (after carefully seating the hood on the lens and then aligning the cap in the hhod). Cokin P-series hood modified for 2:3 aspect ratio http://home.swbell.net/dgweiss/camerastuff/pict0010.jpg The Cokin P-series filters and hoods accomodate square format cameras but we EOSers don't need that, do we? So I cut two thin strips of plastic, painted flat black on the outside, and glued them to the top and bottom of the hood. Everything inside, and on the edges, is covered in black-flocked paper. I have several Cokin P hood extensions that I can stack behind this one; I lined them with the flocked paper too. (In fact, the photo shows one of these underneath the masked unit.) Related to this modification, I have a Cokin adapter ring dedicated to each of my lenses. I mounted each ring to its lens with a "medium" amount of torque, so that I could have a couple of degrees of angular play in either direction and the ring will still stay on the lens. I then mounted the rectangular-modifed Cokin hood illustrated above to each ring. I carefully determined the correct angular position for it. I then marked the adapter ring and, with a jeweler's round file, I formed a small detent notch into the exact bottom of the ring. This notch is engaged by little pressure finger on the filter adapter that bears on the outer edge of the adapter ring. This allows me to find "top dead center" of the filter/hood assembly simply by feel, but still allows odd angular settings if the scene and the filter require it. (The Cokin polarizer, however, rotates within the filter holder, so it does not require the holder to rotate). I have also modified a Lindahl EFX (Compendium-like) shade in a manner similar to the above. The scope of those modifications is beyond the scope of this post, however. Finally, here is a link to the page displaying the flocked paper I used on the above hoods: http://www.edmundscientific.com/Products/ListProducts.cfm?catid=67 Notice that you get a "ton" of the stuff, since they sell it primarily to home telescope makers. I used the non adhesive version, preferring to use my own glue, but suit yourself. DGW * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
