Re: [pinhole-discussion] re: Pinhole Camera Instructions... f/stops and needles
--- stephen ifstep...@yahoo.com wrote: hi phillip curious to know what are you using to create the pinhole? or do you know the approx f/stop? I use squares of aluminum cut out of old pop cans or disposable baking pans, and a pinhole drill made of a needle stuck in a pencil eraser. I spin the needle in the aluminum until the point just goes through, then sand the opposide side a little and drill from that side a couple of turns. After doing this drill/sand routine 2-3 times, I usually have a nice clean round hole. For 35mm I only get the point of the needle through, not the body of the needle, because I want a small hole. For these cameras, I don't worry about what f-stop I've really got: I just try them. With print film (lots of lattitude) and my exposure chart, I rarely see unprintable pictures: a first time pinholer I gave one of my cameras instructions to on world pinhole day got a whole roll of printable pictures! -- PA __ Do you Yahoo!? Yahoo! Calendar - Free online calendar with sync to Outlook(TM). http://calendar.yahoo.com
Re: [pinhole-discussion] re: Pinhole Camera Instructions... f/stops and needles
You can also find them in Wal Mart in the craft section. They usually come in a package of several different sizes ranging from 5 -10, etc. They will have the larger diameter (smaller number) and then a smaller diameter (larger number) separated by a slash such as 5/10. The #10 usually does correspond to the 0.018 diameter as I have used these and tested the holes that they make and measured them and they are accurate enough. Just remember that the smaller the needle number, the larger is the diameter of the needle. ive only been able to find sewing machine replacement needles with numbers but these are larger than what the mm size given in renners pinhole photography book (p 118, figure 5.21a) where can i get a #10 (0.46 mm/0.018 in) needle? thanks!
RE: [pinhole-discussion] re: Pinhole Camera Instructions... f/stops and needles
Hi Stpehen, Try a Michael's Craft store if there is one in your area. They are a big chain; but I don't know if they are nationwide. Tom Miller stephen wrote: where can i get a #10 (0.46 mm/0.018 in) needle? thanks!
