By coincidence a friend showed me his laser focus aid Sunday. It is a green astronomy pointer that he says is useful for doing dim interiors. Got it from Amazon. It is a passive device not a detector or measuring gadget. I'd like to see a measuring device that works at larger distances than 100' I need it to set footage scale for camera with no viewfinder. AZ Build a 120/35mm Lookaround! The Lookaround Book. Now an E-book. http://www.panoramacamera.us > -------- Original Message -------- > Subject: [SPAM] Re: DIY photo equipment > From: rush rouge <pixelrouge@xxxxxxxxx> > Date: Sun, October 19, 2008 7:41 am > To: List for Photo/Imaging Educators - Professionals - Students > <photoforum@xxxxxxxxxxxxxxxxxx> > On Sun, Oct 12, 2008 at 3:03 AM, karl shah-jenner <shahjen@xxxxxxxxxxxx>wrote: > > *a laser focussing aid for macro and large format photography (it can be > > used on any camera) > > > > * a two / three beam pulsed infrared camera trigger - so say when the fly > > is precisely *here* in the frame (and 2 beams are broken) the camera goes > > off or, when something cat height walks through this precise spot the > > camera fires, but not if something dog height walks through. (I really > > should use this thing more too!) > hmmn , this should be a very useful DIY for me... Is there a possiblity of > having more info on this one ??? > Regards > Rush
