let's make a pinhole polaro

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let's make a pinhole polaroid camera!

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Duchamp(38 meses atrs)

A few weeks ago I attended a pinhole camera workshop by Dave Kempat InterAccess. Thisworkshop was a real inspiration, and since then, I've been going a little bananas with this wholepinhole thing. It's also helped me understand a bit more about regular photography.

I thought I'd pass along some of what I learned.

In the workshop we used photographic paper as a negative in our pinhole cameras, and wehad a darkroom setup w ith all the developing chemicals and timer, etc. I'm a little too impatientand lazy to mess around with that stuff, so I've been toying with using sheets of Polaroid 600film to get instant gratification.

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For this pinhole camera, we'll use aluminum foil baking pans. I found a pack of 5 tins for about$1.50 in my local grocery store. These tins come with cardboard lids.

Paint the inside of the tin black, to s top light from bouncing around. If you don't do this, the finalimage will look foggy.

This is the hardest part of the whole process of making the camera. Living in a condo, I don'treally have a work space to spray paint stuff, so I had to do it with everything inside a plasticbag. Not fun. I had to do about 3 coats to cover all the shiny spots.


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Measure the depth of the tin, up to the inner rim where the lid will rest. (I used calipers, but aruler will do) This will be the distance from the pinhole to the film, or the focal length.

Measure the diameter of your pin. This will be the size of the hole, or aperture. I'm using a fairlyregular sized pin which is about 0.6 mm.

Carefully poke a hole right through the tin.


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There ya go. A pinhole.

The F-stop of this camera is calculated by dividing the focal length by the aperture.

In this case... 35mm / 0.6mm = 55

So this is an f 55 camera. You can round up to f 60 if you like. Using the pinhole exposure

calculator at www.mrpinhole.com/, you can make a chart to convert from another f stop toanother.

More on exposure time later...

(DO THIS STEP IN COMPLETE DARKNESS)

In total darkness, slide a sheet of Polaroid film out of a Polaroid cartridge.

With a little bit of tape, fasten the film to the inside of the cardboard lid. You'll want to put thefilm in upside down. (I mark the outside of the lid with an arrow pointing up)


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Place your the lid with film into the tin, and crimp the edges closed.


Place a double layer of tape over the pinhole. Curl a little flap over so you can easily peel it off.This is your shutter. To take a shot, you'll peel this off and expose the hole, and then put thetape back on.


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You'll probably want to tape up the seams to stop light leaks. It's not entirely necessary, sincethe leaks can look pretty n ifty.

There ya go. A complete polaroid pinhole camera.

Here's the business end of the camera.


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There's no need to ever focus this camera. Since there is no lens, there is no need to focus.Things in the foreground will be in the same amount of focus as things in the background. It'sinfinite depth of field. I never really understood this concept until I started to fiddling withpinhole. A lens bends a point of light like a cone, and when in focus, the tip of the cone hits thefilm. When stuff is out of focus, the tip of the cone is not quite at the same distance as the film.This isn't the case with pinhole. With pinhole photography, instead of a cone of light bent by alens, it's more like straight shafts of light from the subject to the film. The size of the pinholedetermines the sharpness of the image.

Metering

If you have a light meter, then lucky you, but for the rest o f us, we'll use our other "real" camerato meter. I set my camera to the same ISO as the Polaroid 600 film, which is ISO 640. I then setthe camera to aperture priority and set the aperture to f16. With a half-press the shutter release

on the camera to meter the scene, we get the exposure time at f 16 at ISO 640, in this case a 2second exposure.

Now using the chart generated at www.mrpinhole.com/exposure.php?Fstop=55, we see thatthe equivalent exposure time for f55 is 24 seconds.

That's a pretty long exposure time, so this is where things get a little tricky with Polaroid film.The film isn't designed to be exposed that long. There is a this thing call "reciprocity law failure"to account for. Basically, after about a couple seconds, the film's ability to capture an image isreduced, so to compensate, we're going to take that calculated exposure time, and multiply it bysome number.

It took a lot of mucking around in a spreadsheet, but I've figured out a chart for compensatingfor the exposure time.

calculated exposure time --> Polaroid 600 exposure time1/30 Secs --> 1/30 Secs1/15 Secs --> 1/15 Secs1/8 Secs --> 1/8 Secs

1/4 Secs --> 1/4 Secs1/2 Secs --> 1/2 Secs1 Sec --> 1 Sec3 Secs --> 4 Secs6 Secs --> 8 Secs11 Secs --> 16 Secs22 Secs --> 33 Secs45 Secs --> 1 Min 13 Secs1 Mins 29 Secs --> 3 Mins3 Mins 59 Secs --> 9 Mins6 Mins 58 Secs --> 18 Mins12 Mins 57 Secs --> 44 Mins24 Mins 54 Secs --> 1 Hour 4 Mins48 Mins 49 Secs --> 3 Hours 40 Mins

So, for my test shot that metered for 2 seconds at f16 converts to 24 seconds at f55 but insteadwe'll expose it for about 40 seconds to account for the reciprocity failure of the film.

Once you have taken your shot and put the tape back over the pinhole, you'll need to process

the shot.


Integrated Polaroid film is developed by squishing the gooey chemicals in the thick part of thewhite border over the exposed film surface. You could use some sort of really hard roller like anacrylic brayer on a hard surface, which would be really DIY, but I opt for an easier and morereliable way to roll the film.



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I use rollers from a broken Polaroid camera. This is the "jaw" part of the camera that covers thefilm compartment.

Place the fat part of the film sheet into the rollers and crank the gear to run it through.

Tada!

There ya go. This would look a little sharper if I could sit still for 40 seconds. Since we're notusing a negative, and the image isn't being made using a mirror like inside a regular Polaroidcamera, the final image is flipped backwards horizontally. I think that's just kinda one of coolthings about this kind of pinhole polaroid photography. You'll find that the shots are a bitdisorienting, like some sort of snapshots of a parallel mirror world.

moonwire (38 meses atrs)

this is awesome! i am definitely going to make a pinhole cam soon.

.Allan (38 meses atrs)

I echo the awesomeness factor here - so cool.

myles.tan (38 meses atrs)

wow, i was gonna make one but had NO IDEA where to start, this will help :). thanks!

uwajedi (38 meses atrs)

sweet... thanks for taking the time to prepare this how-to.

Burlap Jacket (38 meses atrs)

Thanks so much for putting this together. It's a great resource.

traskblueribbon (38 meses atrs)

you have to get one of these it will make your life much easier...

polaroid 600 back

Duchamp (38 meses atrs)

Nifty back. I had no idea such a beast existed.

Lex in the City (38 meses atrs)

Awesome.


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Now, the only supplies I currently have in my possession is the aluminum tray (used mainly formeatloaf) and a pin (to hold up the hem of my pants). Me needs to go shopping. :^)

jordanzanatta (38 meses atrs)

You think a plain ol' pizza dough type rolling pin would work? It'd be really ghetto.


Sure, any hard roller on a hard surface would do. Ideally you need to have even pressure.Even cranking it through my rollers I get some banding since I'm cranking the gears a bit at a

time with my thumb.

SantiagoLeal (38 meses atrs)

love it

nariobarbosa (38 meses atrs)

muito bacana um tcnica artesanal mesmo com a tecnologia podemos captar imagens com umsimples orificio. parabns thank you.

anderspace (38 meses atrs)

Supercool.

louisclub (38 meses atrs)cool

Tamiro (38 meses atrs)

awesomeness!! thanks for the effort! TY TY!!

--Seen in a discussion of Homemade Pinhole. (?)

bexbrent (38 meses atrs)

O man, we spent all afternoon building this camera, but non of our photos turned out : (

Wish I could figure out what is going wrong, but the result we are getting is that the photos arejust a bunch of colours like red, gold etc (chemicals) - is this to do with the rolling? We used therollers from a polaroid camera.

I don't get it!


As long as the chemical where spread evenly over the film, the rolling should be fine. Did youpaint the inside of the tin? If not, then you will get a lot of fog over your shot, Can you scan andpost your results?

cre8tive1der (38 meses atrs)

WOW!!! ! It just so happens that I have an old sx-70 that I can tear apart for the guts to try thismyself>>>>>COOL!!!! I love COOL!!!! thanks for the ideas and especially the clearinstructions.

.eburn (38 meses atrs)

wow... this is so cool! If I don't have one of those polaroid camera's rollers what else do youthink I could use? Cheers from Chile.

--Seen in a discussion of Pinhole.(?)

traskblueribbon (38 meses atrs)

I'm working on my pinhole-a-roid right now and can't wait to use it...

carloslazaro (37 meses atrs)

Gracias por tu generosidad

chinosol (37 meses atrs)

excellente! :)


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constantlycrafting (37 meses atrs)

Wonderful! Thanks for sharing.

Polaroid Joe (37 meses atrs)

Hi, I'm an admin for a group called Polaroid Camera Conversions/Modifications, and we'd loveto have your photo added to the group.

Toycamaniac (37 meses atrs)

I love this project! Gave me lot of ideas.

Cleo Brekelmans (37 meses atrs)

I would love to one too, but I really don't get that exporure time/metering thing. How do youknow which exposure time you have to take? And why do you use an exposure time of 40 secwhen you said that it can only handle a couple of seconds?


Polaroid film doesn't handle long exposures well. To compensate for it, you need to multiply theexposure time according to a reciprocity failure curve. My timing chart figures that out for you.

wire tap (36 meses atrs)

what do I do if I can't change my camera's ISO to 640? The c losest ones are 400 and 800

Sam Watmore (28 meses atrs)thanks im gonna try this as i have 600 film but i cant get it to work in my Polaroid SX-70 ,actually i dunno if you could help with that ?

Cliff Davis [excludo] (26 meses atrs)

you rock you just gave me an idea!

resistance_is_futile (23 meses atrs)

thank you for instructionsI was wondering if it won't be easier to use peal off polaroids?

Nobledesign (22 meses atrs)

LOVE this. Thank you.

toasty lady (22 meses atrs)

this is super! do you know if you can do this with a 669 pack? it would be more tedious to pulleach one out in the dark and there is more risk in exposing the whole pack, but i am toying withthe idea...


If you are going to use 669 pack, you might be able to get a polaroid back and build somethinga but more sturdy than this. All the same principles work, but you would need to research thelong exposure timing for that film a bit.

Happy world pinhole day!

naomi rose (22 meses atrs)

argh I just tried it and three roids didn't come out, sad face :(

toasty lady (22 meses atrs)

thanks for the insite, i have not thought about needing extra support. i tried it with a foil box andnothing came out.... back to the drawing board.

happy world pinhole day!

amnesiak1978 (20 meses atrs)

great idea, thanks for sharing!


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giacomo . (18 meses atrs)

wow, thanks for sharing

The Ghosts You Draw On My Back (13 meses atrs)

hey, im using a p inhole camera with f150 and fuji100 film, ive calculated exposure times butneed to add time for reciprocity failiure but dont know what facctor to multiply the numbers by,do you have any advice you could give me? cheersisaac

_nod (11 meses atrs)

This is brilliant, thank you!

maryjteraji (10 meses atrs)

This is awesome, but I don't understand... I thought polaroid film wasn't being made anymore?where do you get it?

amaliachimera (10 meses atrs)

You know, if you shoot the photo by putting a whole pack into the p inhole, you can then put thepack into any camera and it will eject it, thinking it's a darkslide, and therefore running thephoto through rollers and developing it for you. For all the people who don't have a spare set of

jaws from an SX70, this would be helpful! I guess it would mean the photo is closer to thepinhole and change some measurements, but thanks to the mr. pinhole that would be easy tocalculate.

I'm making a pinhole for peel-apart and was hoping to find out about the reciprocity failure, too,

but it looks like that's not here. :( But it will be fun to test out this on 600 film, since I never use itand you've already done all the math for us!

Zoomfreaky (7 meses atrs)

Coollll! Thanx a lot for this tutorial!

chocomento (6 meses atrs)

Great idea!! :D

ohmynezzy (4 meses atrs)

do you think there's any other film paper aside from polaroid 600 we can use?

tigertimby (6 semanas atrs)

This is really cool (:I don't have any 600 film left, but I have loads of spectra film.Do you know if this would work well with spectra?

sheilawesome (2 semanas atrs)

this is so sick.

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let's make a pinhole polaro

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