Pin-Hole Zorki

[khairi]

Originally Posted by Max 2.8 I use a needle, the finest I can find at home, slowly "drill" until got hole. I've got a feeling hole maybe too big, thats why image not sharp But the holeis really tiny, my ruler can't even measure it....so dunno how to make smaller hole....

technically, yes...think the hole is a lil big and it's wide because of the distance
between the pinhole and the film plane is very near. If you do a search, you can calculate
how big a pinhole you should 'drill' for sharp picts.

but, on the other hand, WHO CARES...aiyah...if too tech then no fun mah....just shoot!
love the result anyway.

[TrailsofLife]

Originally Posted by khairi technically, yes...think the hole is a lil big and it's wide because of the distance between the pinhole and the film plane is very near. If you do a search, you can calculate how big a pinhole you should 'drill' for sharp picts. but, on the other hand, WHO CARES...aiyah...if too tech then no fun mah....just shoot! love the result anyway.

I did, i used mrpinhole.com to calculate the pinhole...it must be o.17mm! how to be so accurate

[ullyss]

Here's a thought, I would probably try it when I have more time. Let me know if it works.

Tape up your lens filter. Punch a hole on the tape where you can physically measure the diameter.

[canonaffair]

yea must hold up the pinhole against the light to see where the hole is otherwise cannot see at all! really quite tough to get a hole that small. hmmm.. anyone has any ideas?

Originally Posted by Max 2.8 is it? Will try again...thinking of how to get really tiny hole now....

[alvinsclee]

Originally Posted by canonaffair yea must hold up the pinhole against the light to see where the hole is otherwise cannot see at all! really quite tough to get a hole that small. hmmm.. anyone has any ideas?

Try using acupuncture needles... they are the finest I've known... see if you can talk to your friendly neighbourhood chinese medical hall for some.

These needles come in various length and thickness. It is the thickness that we are concerned here. Thickness is categorised in "gauge numbers". Here are the approximate measurements...

Gauge Number : Thickness (mm)
#38 : 0.18 mm
#36 : 0.20 mm
#34 : 0.22 mm
#32 : 0.25 mm
#30 : 0.30 mm
#28 : 0.35 mm
#26 : 0.40 mm

Happy experimenting!

[TrailsofLife]

Originally Posted by alvinsclee Try using acupuncture needles... they are the finest I've known... see if you can talk to your friendly neighbourhood chinese medical hall for some. These needles come in various length and thickness. It is the thickness that we are concerned here. Thickness is categorised in "gauge numbers". Here are the approximate measurements... Gauge Number : Thickness (mm) #38 : 0.18 mm #36 : 0.20 mm #34 : 0.22 mm #32 : 0.25 mm #30 : 0.30 mm #28 : 0.35 mm #26 : 0.40 mm Happy experimenting!

I think it'll be too soft?

[alvinsclee]

Originally Posted by Max 2.8 I think it'll be too soft?

Drill a bigger hole and cover the hole with black aluminium foil. Then, use the acupucture needle to poke the foil (which will be soft enough to make a tiny hole, yet hard enough to remain in shape). Good thing is that you can easily make more if the foil gets damaged during use.

[csisfun]

It's not really so much how accurate your pinhole is in diameter, the other more important factor that everyone has missed is how round the hole is.

Check your hole through a microscope or your scanner, and you will find that it's never perfectly round.

The problem with smaller holes (35mm pinholes) is that they are usually so small that it gets even more difficult to poke a round hole.

The second problem with using 35mm for pinholing is the magnification needed. I'm sure you scan at a very high dpi, and thus the negative gets magnified a lot. The problem with this is that the blur gets magnified on the way. So, your pictures look as such.

I shoot with paper... for a good reason. See the pic.

[TrailsofLife]

All this make sense...the the process is too much for me.... Will attempt to poke another piece when I am free....thanks for the advices, guys

[StreetShooter]

There are some tips on making the pinhole and measuring it in this thread.

http://forums.clubsnap.org/showthread.php?t=50110

Here are some of the shots made with the camera:

http://forums.clubsnap.org/showthread.php?t=59087
http://forums.clubsnap.org/showthread.php?t=59084
http://forums.clubsnap.org/showthread.php?t=50863

Agree that using paper gives you the best results. But the exposure time is much longer. The upside is that you don't have to worry about people walking in front of you - they will be like "ghosts" and won't appear in the final print.

I started off with a film pinhole camera (using a very cheap plastic toy camera) and these are the results:

http://forums.clubsnap.org/showthread.php?t=46725

[TrailsofLife]

Originally Posted by StreetShooter There are some tips on making the pinhole and measuring it in this thread. http://forums.clubsnap.org/showthread.php?t=50110 Here are some of the shots made with the camera: http://forums.clubsnap.org/showthread.php?t=59087 http://forums.clubsnap.org/showthread.php?t=59084 http://forums.clubsnap.org/showthread.php?t=50863 Agree that using paper gives you the best results. But the exposure time is much longer. The upside is that you don't have to worry about people walking in front of you - they will be like "ghosts" and won't appear in the final print. I started off with a film pinhole camera (using a very cheap plastic toy camera) and these are the results: http://forums.clubsnap.org/showthread.php?t=46725

Thanks for the info Just made another pinhole for my zorki...its definitely smaller than the first one(looked at it with a 10X loupe) but its not round, its a tiny line....wonder if it works? I tested it with tracing paper pasted over the film window...seems ok ....

[meeky]

try using a proper lens. Much sharper pics for sure.

[nightwolf75]

Originally Posted by meeky try using a proper lens. Much sharper pics for sure.

u are soooo totally missing the point.... (pun intended)

either dat, or u have no idea wat max 2.8 is talking abt here....

[csisfun]

Originally Posted by nightwolf75 u are soooo totally missing the point.... (pun intended) either dat, or u have no idea wat max 2.8 is talking abt here....

I think he was trying to make fun of us chasing sharpness with a pinhole camera.

[TrailsofLife]

Originally Posted by csisfun I think he was trying to make fun of us chasing sharpness with a pinhole camera.

I think you're right. I search thru the net...most 135 format pinhole are not as sharp compared to paper. I think what I've got is pretty close...but no harm trying again...will post result once I do a test run on my second "pin-line" plate on my zorki....

[vortex]

Max,

The Hongkong 8 banner pinhole distributor posted this article for you

http://www.8banners.com/index.php?op...id=9&Itemid=33

[TrailsofLife]

Originally Posted by vortex Max, The Hongkong 8 banner pinhole distributor posted this article for you http://www.8banners.com/index.php?op...id=9&Itemid=33

Went thru the same process liao. except, I put my pin hole closer to the film plane. Mine is about 18mm.