pinhole - laser drilled cap - anybody tried?

[--]

Has anybody tried shooting pinhole with the R-D1(s) with a cap that has a laser drilled hole? Any links?

Thanks in advance
Karspoul

 

[eli griggs]

A quick Google for laser pinhole caps found this:

http://www.lenoxlaser.com/pinholephotos/SLR_Pinhole_Camera_Kits.html

I've never used one but they are on my list of things to try.

Cheers

 

[uhligfd]

A pinhole suffers from unsharpness all over. So a large sensor/film (MF or better LF) would be ideal for this. On a 35mm camera pinhole caps are giving soso results. And on 120 film they perform nicer etc on up in size.

I would say it is not worth much on a small size sensor. And also realize that you will be shooting at around f/185 or so, so you will need a tripod or a least way high ISO in the sun on a beach: not really rangefinder good sense.

Laser drilled or pin pricked does make no difference here. At the microscopic sizes of pinholes, the fraying edges of the material will be the limits of precision ...
And the unsharpness has very little to do with the clearcut hole or not so clearcut hole ...

 

[ampguy]

also a couple of vendors on ebay with them

also a couple of vendors on ebay with them

on my list to try as well. Let me know if you have luck with any of these.

A quick Google for laser pinhole caps found this:

http://www.lenoxlaser.com/pinholephotos/SLR_Pinhole_Camera_Kits.html

I've never used one but they are on my list of things to try.

Cheers

 

[__hh]

I am also skeptical of this... how high tech can a hole get?

 

[manojd]

Not exactly a pinhole, but I converted a P&S lens into a cap mount. See this thread: http://www.rangefinderforum.com/forums/showthread.php?t=34501

 

[kbg32]

Pinole body cap.

Pinole body cap.

A pinhole example of my significant other.

http://www.pbase.com/keithbg/image/38790543

 

[JoeV]

A pinhole suffers from unsharpness all over. So a large sensor/film (MF or better LF) would be ideal for this. On a 35mm camera pinhole caps are giving soso results. And on 120 film they perform nicer etc on up in size.

I would say it is not worth much on a small size sensor. And also realize that you will be shooting at around f/185 or so, so you will need a tripod or a least way high ISO in the sun on a beach: not really rangefinder good sense.

Laser drilled or pin pricked does make no difference here. At the microscopic sizes of pinholes, the fraying edges of the material will be the limits of precision ...
And the unsharpness has very little to do with the clearcut hole or not so clearcut hole ...

I might add that the math for optimal pinhole size vs projection length favors longer projection lengths over shorter ones.

Meaning that if you compare two hypothetical pinhole camera setups, both with the same angle of view, that the longer projection length will fit a larger film format, and will also have a much larger allowable F-ratio for an optimal pinhole size.

And thus the longer projection length setup can have both a sharper image due to a higher focal ratio pinhole, and sharper image because the larger format doesn't require enlargement to the same degree as the smaller format.

Until someone is intent on dedicating a medium format scanning back to pinhole use, I think film and paper-negative based large format pinhole cameras will still rule the day in terms of image quality from a micro aperture.

~Joe

 

[anselwannab]

Guys, its a pinhole, not the Hubble Telescope.

If you want optimal optical performance, buy a Leica lens you cheap b@stards.

I thought the point of a pinhole lens was that it wasn't perfect and was more an interpretation of the scene.

Let's see:

Triplet
Doublet
Singlet
None-let