Re: [pinhole-discussion] Re: mini-pin + photo flo sub
Aaron, I would love it if you could send me one to see. Can I send you my address via personal e-mail? Thanks, Heather - Original Message - From: aaron Sent: Wednesday, March 06, 2002 6:24 PM To: pinhole-discussion@p at ??? Subject: [pinhole-discussion] Re: mini-pin + photo flo sub i too have heard that you can use dishwashing detergent in lieu of photo-flo, but i've never tried it. > Can you share how you made these mini-pin cameras? I am new to pinhole an= > d these sound really cool. I would love to try. > the mini-pin cameras are just 35mm film cannisters. i used a hole punch to make a large hole mid-way up one side. a pinhole poked into a piece of an aluminum baking sheet was taped to the inside of the cannister in the same place. the paper negs are 3 1/4 inches by 1 5/8 or so, and the exposure times have been about 3 seconds in bright daylight. i use a piece of black electrician's tape as the shutter. it's useful to build about ten of them to take out shooting at once, as you only get one shot per. they're pretty small so it's not so akward to carry that many around. don't use film cannisters from ilford films, as the tops (the bright blue, orange and grey) are not light proof. the image is a negative, so you'll have to make a contact print. i've tried enlarging them with a 35mm holder, and it works fine too, but you get a bit of paper texture, and the exposure times are LONG. you could use film in them too, but i haven't worked that way, as the prospect of processing lots of little clips of film seems rather daunting... if you send me your address, i'll send you a few as long as you share the results... but it's super easy to build your own. /aaron ___ Post to the list as PLAIN TEXT only - no HTML Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/
Re: [pinhole-discussion] panorama-camera
- Original Message - From: > and may be somebody can share the secret of how > to build a panorama pinhole ? I would be delighted. > > New guy on the list - Alf Christian Samuelsen Hello Alf, I don't do panoramic pinhole photography, but allow me to answer your question, anyway: Panoramic, *arguable* equates to a film format with one dimension of the rectangle being 2 - 3 times or more as the other one. As such, I'd say there are no secrets to construct non-rotational pano-pinhole cameras. Perhaps the easiest way to achieve panoramic is with single shoot cameras using food or other product containers, just load a piece of paper or film with a dimension ratio of at least 2:1 or larger. If you own a camera that takes cut sheet film, you could easily do panoramics by cutting an extra darkslide like this: http://www.benderphoto.com/2x5pa.htm , that would allow you to do two 2x5" or two 2.5x7" or two 4x10 per sheet of 4x5, 5x7 or 8x10 film, respectively. Guillermo
[pinhole-discussion] Re: Zero 6x9 pinhole
Thanks for your good words. What I can said is thanks to those who own our cameras. Thanks to all your supports. One more thing I can tell is there is more than 15 layers of hand paint lacquer for the finishing, all layers are applied by hand brush, not air spray gun. The ancient coloring and finishing method we adapted is now all wooden industry (or wooden product factory) will not use again because of the expensive production cost!! Sorry I don't know what you mean "stuff sack"? It seems we don't have a sack comes with the camera, is you mean the bubble-wrap? Now we got some camera owners ask for this sack!.. It seems I must design one now:-) Thanks again. If anyone who still don't have a pinhole camera, don't hestitate to get one (or make one), the pinhole world is wonderful! Let's come together to enjoy it and celebrate at the 2nd Worldwide Pinhole Photography day at http://www.pinholeday.org Zernike D.Alfrey wrote: > I strongly advise you to go ahead and buy the Zero Image Multi Format pinhole > camera for several reasons , all of which if you buy will come to agree is > worth the money . I have one, and have used it quite a lot , and the quality > is such that I am readying to buy Zero Image's 4X5 even though I have other > 4X5 pinhole cameras. > > The camera itself is in my not so humble opinion is an objet d' art alone. > its simplicity alone is amazing , but then arent all pinholes simple ? :-) > The craftmanship shows , and I quite often show it off , like one would a > new toy . > > Zernike Au who owns Zero Image sends the camera in a nice stuff sack, , but I > also protect mine from scratches by inserting it in a thick wool sock, for > added bump and scratch protection . > > > (Sorry, Zernike , if you are reading this plug for your works), but I > cant say enough good things about this camera, and I am usually given to > skepticism , and if others who own a Zero Image, be it the 6X6 , the Multi > Format, or the newer 4x5 version , I suspect you will find few detractors > from these cameras , Yes, seemingly the 200 dollar price might well seem > high to you initially, but once you have the cameras in your hands , you will > see it was well worth it. , but think of it this way, quality items well > crafted always carry a price, Ask anyone who would be willing to sell theirs, > and you would have few if any sellers I suspect , you can have my Zero Image > Multi Format , when you rip it from my dead cold fingers !! >
[pinhole-discussion] Pinhole Calculations
Query to Larry Bullis: I have experimented with a set of 12 pinholes obtained fromCalumet, ranging from 0.0059 to 0.032 inches in diameter, on a 4x5 view camera. It quickly became apparent that angle of view is dependent only only on lens to film plane distance. Any of the 12 varying pinhole sizes give the same angle of view at a given bellows extension. The difference is in the amount of light admitted by the pinhole aperture. Thus it makes sense that, as the pinhole aperture becomes smaller , admitting less light, the bellows extension must decrease, to maintain the same amount of light, which means the focal length gets smaller. You've given a formula to calculate the optimum pinhole size for a given focal length to give the "sharpest image." The formula is pinhole(in) = square root FL x 0.0073 or pinhole(mm)= square root FL x 0.03679. My question is; does this formula really give the sharpest image? First, you've said that depth of field is essentially uniform from near to far and somewhat soft because of diffraction. Since, for a given focal length, aperture(pinhole) varies inversly with f-stop, the formula must be designed to balance pinhole against f-stop, one admitting more light and the other admitting less light. The constant (.oo73 or .03679) is what determines the answer. So, now the question is; How is the constant determined? Does it give the "sharpest" image or is it just a trade off between exposure time and pinhole size? Do smaller pinholes give more diffraction and thus less sharp images? Using a different constant will gives different answers; what is unique about the given constants?
Re: [pinhole-discussion] Zero 6x9 pinhole
I would second that advice. The formulas give you supposedly the most "sharp" picture for the given focal length and pinhole size... but, is that really what you want from a pinhole image- the most sharp picture you can get? You can be *way* off, and still get great pictures. On Sun, 2002-03-10 at 07:12, Bill Erickson wrote: > There are at least two different formulas for the pinhole to film plane > distance question. There are lots of different tables already calculated > that have been referred to before. See Eric Renner's book for a long > detailed description. Also, since you can be off from the "right" distance > by a factor of 10 and still get usable images, just try something and see > what you get. > > - Original Message - > From: "cfowler" > To: > Sent: Saturday, March 09, 2002 7:49 AM > Subject: [pinhole-discussion] Zero 6x9 pinhole > > > > Hi all, > > > > How about different subject than photoflo ! > > > > I am getting ready to order the zero 6x9 multiformat pinhole > > camera, has anybody used this camera's ? is it worth 200 Bucks ? > > I have mostly used large format camera's, I have a big 5x7 view > > camera, I dont think it be hard to convert to pinhole but how do > > select the distance of the bellows ( pinhole to film plane ) ? > > is there certain rule ? > > > > C.H. Fowler > > > > > > ___ > > Post to the list as PLAIN TEXT only - no HTML > > Pinhole-Discussion mailing list > > Pinhole-Discussion@p at ??? > > unsubscribe or change your account at > > http://www.???/discussion/ > > > > > ___ > Post to the list as PLAIN TEXT only - no HTML > Pinhole-Discussion mailing list > Pinhole-Discussion@p at ??? > unsubscribe or change your account at > http://www.???/discussion/
[pinhole-discussion] Re: Pinhole-Discussion digest, Vol 1 #650 - 16 msgs
i've built 110 cartridge cameras with kids around 13 yrs... they seemed to like it, and it's very easy. it avoids using a darkroom, which may or may not be to your advantage... there are lots of sites adapting the instructions formerly posted by kodak. this one is pretty fun: http://pinholespy.com/ one last thing about photo-flo/dish soap: as someone who is not by any means a chemist, i have been interested lately in the "household chemistry" darkroom. this has led me to alternatives such as the dish soap for photo-flo, as well as other more interesting formulae like a coffee developer (there is a vitamin-c version as well). i'd be curious if anyone on the list has experimented with this... the motivations to substitute are varied, but mostly NOT economic. some people do this for environmental reasons, others just to experiment. the results i've seen (especially from the coffee) are pretty amazing. /aaron
[pinhole-discussion] Re: Pinhole-Discussion digest, Vol 1 #650 - 16 msgs
i've built 110 cartridge cameras with kids around 13 yrs... they seemed to like it, and it's very easy. it avoids using a darkroom, which may or may not be to your advantage... there are lots of sites adapting the instructions formerly posted by kodak. this one is pretty fun: http://pinholespy.com/ one last thing about photo-flo/dish soap: as someone who is not by any means a chemist, i have been interested lately in the "household chemistry" darkroom. this has led me to alternatives such as the dish soap for photo-flo, as well as other more interesting formulae like a coffee developer (there is a vitamin-c version as well). i'd be curious if anyone on the list has experimented with this... the motivations to substitute are varied, but mostly NOT economic. some people do this for environmental reasons, others just to experiment. the results i've seen (especially from the coffee) are pretty amazing. /aaron
[pinhole-discussion] the forum experiment...
Hi everyone, I've closed down the "Pinhole Day 2002/Pinhole Photography" public forums at http://www.???/forum/ after trying it out for the past few months. I don't recall exactly when it was opened up, but I think it was in the late fall of last year. It hasn't been used very much and discussion subjects there seemed to mostly overlap with our existing channels of communication, such as this discussion list. If, at any time, anyone has a need for a "special forum" to discuss things outside of this list, such as the forum for the last "Christmas card swap", or something similar, please get in touch with me and I'll be glad to set it up for you. Any forum I set up will require someone to serve as "moderator" and be responsible for the forum. Thanks, - Gregg _ Pinhole Visions at http://www.??? Worldwide Pinhole Photograhy Day at http://www.pinholeday.org
Re: [pinhole-discussion] Zero 6x9 pinhole
There are at least two different formulas for the pinhole to film plane distance question. There are lots of different tables already calculated that have been referred to before. See Eric Renner's book for a long detailed description. Also, since you can be off from the "right" distance by a factor of 10 and still get usable images, just try something and see what you get. - Original Message - From: "cfowler" To: Sent: Saturday, March 09, 2002 7:49 AM Subject: [pinhole-discussion] Zero 6x9 pinhole > Hi all, > > How about different subject than photoflo ! > > I am getting ready to order the zero 6x9 multiformat pinhole > camera, has anybody used this camera's ? is it worth 200 Bucks ? > I have mostly used large format camera's, I have a big 5x7 view > camera, I dont think it be hard to convert to pinhole but how do > select the distance of the bellows ( pinhole to film plane ) ? > is there certain rule ? > > C.H. Fowler > > > ___ > Post to the list as PLAIN TEXT only - no HTML > Pinhole-Discussion mailing list > Pinhole-Discussion@p at ??? > unsubscribe or change your account at > http://www.???/discussion/ >
Re: [pinhole-discussion] Zero 6x9 pinhole
I can't say enough good things either the Zero 6x9. It's a beauty, it's easy to use, it does multiple formats (I use mine mostly on 6x9). You make friends from people who want to know what it is you are doing when you shoot a picture (you know, like walking a dog gets you to meet all sorts of new people). And when you're done you've got wonderful pinhole prints. What more can you ask. A jewel! Guy - Original Message - From: "cfowler" To: Sent: Saturday, March 09, 2002 8:49 AM Subject: [pinhole-discussion] Zero 6x9 pinhole > Hi all, > > How about different subject than photoflo ! > > I am getting ready to order the zero 6x9 multiformat pinhole > camera, has anybody used this camera's ? is it worth 200 Bucks ? > I have mostly used large format camera's, I have a big 5x7 view > camera, I dont think it be hard to convert to pinhole but how do > select the distance of the bellows ( pinhole to film plane ) ? > is there certain rule ? > > C.H. Fowler > > > ___ > Post to the list as PLAIN TEXT only - no HTML > Pinhole-Discussion mailing list > Pinhole-Discussion@p at ??? > unsubscribe or change your account at > http://www.???/discussion/
Re: [pinhole-discussion] Zero 6x9 pinhole
- Original Message - From: "cfowler" > > I am getting ready to order the zero 6x9 multiformat pinhole > camera, has anybody used this camera's ? is it worth 200 Bucks ? I don't own the camera, but I've seen it and -as I have said before, the darn thing is a beauty, no question about it. From the point of view of craftmanship I'd say it is worth the 200 american pesos and I'd bet its pinhole-photographic functionality is up there, too. > I have mostly used large format camera's, I have a big 5x7 view > camera, I dont think it be hard to convert to pinhole A view camera hardly needs any thing done to it to convert it to pinhole camera, you just basically need to use or dedicate a lens holder to mount a pinhole on it. > but how do > select the distance of the bellows ( pinhole to film plane ) ? > is there certain rule ? You mention the distance "pinhole to film plane", that is the focal length of your set up. The rule, (which is meant to be broken to suit your purposes, BTW) is given by the formula for the "optimum" pinhole diameter. You don't have to use that distance, but at least it gives you a reference point from which depart. If you don't care in measuring pinholes and calculating "optimum" diameters of focal lengths, then, you don't have to care in measuring the bellows extension, either, just find by trial and error a bellows extension point you like the results from and that would be the "optimum" focal length for that particular pinhole. Guillermo
