Forums › Forums › Farktography General Chat › This week’s contest › 12-03-08 – Pinhole Camera
- This topic has 64 replies, 20 voices, and was last updated 15 years, 4 months ago by corsec67.
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November 21, 2008 at 8:40 pm #19774sooshParticipant
yeah, with digital, you get far worse diffraction, and there’s really not a lot of ways to combat that.
you can try making a larger hole and put your camera on aperture priority to let it take an appropriate amount of light in.
November 21, 2008 at 8:53 pm #19775ElsinoreKeymasterI think I’m going to shoot with both my homemade Lensbaby version (which is bigger) and the bodycap version and see what works out best. I’ve found that with both, the camera’s meter doesn’t handle the exposure well, even on aperture priority.
November 21, 2008 at 9:20 pm #19776sleepingParticipantThere is a reason not many people use pinholes. I think that the quality get better as the film size gets bigger, but the aperture gets much smaller. (Smaller than f/200?!)
Yeah, I think film size is a big factor, most of the good stuff I’ve seen has been medium/large format. However, it is possible to do some really stunning stuff with pinholes. These are from one of my Flickr contacts:
November 22, 2008 at 1:44 am #19777nobigdealParticipantI’m going to drill a body cap & try it on my 40d and A2 and see what has the best results.
I also have used a piece of paper with a small hole behind a UV filter on a lens to get a faux pinhole effect
This
Is an example of something that was done sitting in a field without much effort, but I think I want to try the real thing for the theme.
November 23, 2008 at 4:47 am #19778U-ManParticipantI made a pinhole “lens” today. While I looked at several sources, I think that I just copied how one guy did it. I drilled a smallish hole in the center of a camera body cap. Then I cut out a circle from an aluminum can several mm smaller than the inside of the cap (I think that an even smaller disc would be better to allow more area for tape to stick). I then sanded both side of the aluminum to make it a bit thinner. I used a sewing needle to make the smallest hole I could. Sanding down the bump before the needle actually penetrated seemed to be helpful. Working on the inside of the cap, I just lined up the tiny hole in the middle of the larger one in the cap and pressed down the tape.
Here it is in pictures –
November 23, 2008 at 5:00 am #19779U-ManParticipantI then went out with the kids and looked for stuff to photograph. The results were less than stunning. Everything was pretty blurry. I couldn’t match the clarity of corsec67’s lamp.
Here’s one of the first ones with the pinhole lens only 5 minutes old –
Here’s one down by the river –
I’ll try some more stuff. Oh yeah, and by the way, blow off that sensor before doing these pinhole pics. Sensor dust just jumps out and pokes you in the eye.
/or maybe leave it there. The specks just might add something to this format.
November 23, 2008 at 4:05 pm #19780corsec67ParticipantThe results were less than stunning. Everything was pretty blurry. I couldn’t match the clarity of corsec67’s lamp.
Here is a macro of the hole in that lens:
The ruler at the top is in mm, so that puts the hole at about .3mm. If you have a laser pointer, shining the laser through the hole can tell you if you have issues other than size, like paint causing too much spreading of the light. (I had that on the first pinhole lens, I forgot to remove the epoxy on the inside of the can.)I think you are fairly close, though.
As for the dust: dust is more visible at higher f-stops, and these lenses are about f/200, so this is really the perfect “dust test” lens.
November 23, 2008 at 4:16 pm #19781SilverStagParticipantUnless I pull off some miracle of insight, I’m going to be sitting this one out. I cannot, for the life of me, make an image that isn’t all diffraction all the time. Certainly nothing I’m happy with.
November 23, 2008 at 8:44 pm #19782olavfParticipantUnless I pull off some miracle of insight, I’m going to be sitting this one out. I cannot, for the life of me, make an image that isn’t all diffraction all the time. Certainly nothing I’m happy with.
I feel like I’m almost, but not quite there.
Buried down in the reader comments on some site that suggested dimpling the aluminum and then sanding it back to the desired diameter. It seems to have helped, but now I’m wondering if the 320 grit sandpaper wasn’t fine enough and that if I were to go even finer that might help.
Beer-can lens take one:
November 26, 2008 at 12:56 am #19783wrayvynnParticipantwould it be okay if i took pictures through holes in random objects?
December 1, 2008 at 10:25 am #19784Choc-Ful-AParticipantI’m afraid I’m out for this one. I am looking forward to seeing what you all come up with, perhaps even more than normal because I’ve got nothing. But figuring out how to make a pinhole camera out of the equipment I have is beyond my ability (meaning available time plus mental capacity) this week. I’ll still participate in the voting though, so best of luck to you all.
December 2, 2008 at 2:07 am #19785nobigdealParticipantI made a 1/2 ass pinhole lens today at work.
Results seem to be typical for everyone else.
There has got to be a way to use this effect artistically, I just don’t know if I will have time.
Examples:
December 2, 2008 at 5:50 am #19786sooshParticipantone of the things you really gain with a pinhole is everything from right next to the camera on out is in as much focus as everything else. I think the best shots are ones that emphasize that, almost to the point of hokey 3-D movie effects.
I don’t know if I’ll have anything for this contest or not.
December 2, 2008 at 1:03 pm #19787staplermofoParticipantI made a 1/2 ass pinhole lens today at work.
Results seem to be typical for everyone else.
That might be because those of us with crappy results kept them to ourselves.
I can’t even center my @#$%ing hole.
December 2, 2008 at 10:05 pm #19788SilverStagParticipantI can’t even center my @#$%ing hole.
Think of it as an involuntary lens shift.
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