Reading mode: Light Dark

How to make the worlds cheapest lens :-)

Go to last post
Hello,
Check this link:
http://www.photo.net/pinhole/pinhole

At the bottom, there are indications for focal lengthes of your home made length :)

I would like to try it for myself :)
Tony
thomas1973 said:
Take a piece of tinfoil from the kitchen, prick a tiiiny hole
through the middle with just the tip of the needle, then wrap the
tinfoil around your lens mount, with the pinhole as centred as
possible.

YOU HAVE JUST MADE YOURSELF A LENS! :-))

Here are some examples. Not very interesting, but just to show that
it works, and the image quality you can expect:





I'll try to shoot something more interesting later, and maybe some
of you guys can contribute too? :-)

Thomas.

===================================
Some explanation and advice:

I made the hole by placing the tinfoil on the table, and just
pricking the tip of the needle through the tinfoil - not the whole
needle, just the tip.

The size of the hole is not critical, neither is the positioning
over the lens mount. Just allign it as best you can.

The hole you made, is your tiny aperture, and because of the tiny
size, it also 'focuses' the light. The smaller the pinhole, the
longer the shutter speeds, but the sharper the images you get. So
you have to find your own balance here. You can always make a new
one :-)

You need long shutterspeeds, because of the small hole. Put your
camera in M mode. Just try it out, and watch the result on the LCD.
You probably need a shutter speed of several seconds.

BTW, the black dots on the images are the dust bunnies on my
sensor. Because of the small aperture, they turn out very clear.
===================================
Click to expand...
 
Check this one:
http://www.pinhole.org/make/exposure.cfm
Tony El Batal said:
At the bottom, there are indications for focal lengthes of your
home made length :)

I would like to try it for myself :)
Tony
thomas1973 said:
Take a piece of tinfoil from the kitchen, prick a tiiiny hole
through the middle with just the tip of the needle, then wrap the
tinfoil around your lens mount, with the pinhole as centred as
possible.

YOU HAVE JUST MADE YOURSELF A LENS! :-))

Here are some examples. Not very interesting, but just to show that
it works, and the image quality you can expect:





I'll try to shoot something more interesting later, and maybe some
of you guys can contribute too? :-)

Thomas.

===================================
Some explanation and advice:

I made the hole by placing the tinfoil on the table, and just
pricking the tip of the needle through the tinfoil - not the whole
needle, just the tip.

The size of the hole is not critical, neither is the positioning
over the lens mount. Just allign it as best you can.

The hole you made, is your tiny aperture, and because of the tiny
size, it also 'focuses' the light. The smaller the pinhole, the
longer the shutter speeds, but the sharper the images you get. So
you have to find your own balance here. You can always make a new
one :-)

You need long shutterspeeds, because of the small hole. Put your
camera in M mode. Just try it out, and watch the result on the LCD.
You probably need a shutter speed of several seconds.

BTW, the black dots on the images are the dust bunnies on my
sensor. Because of the small aperture, they turn out very clear.
===================================
Click to expand...
Click to expand...
 
What a hoot! The hightech D70 meets the lowtech pinhole!

Funny! The company that I'm working for is merging old and new technology to create a prototype to test a concept. I can't talk about it other than to say that it looks like a blend of the 50's bulk with 21st century micro circuitry.

dave
--
dave-the-slave
WB4LCN/6
'You've gotta serve somebody.' - Bob Dylan
http://dave-the-slave.smugmug.com



'By the way, that cloud looks like a pinhole camera!'
 
I thought D70 wouldn't let you press the shutter button without a lens on it. I guess I was wrong. :)

Interesting to see how a tiny pinhole plus D70 with long exposure beats all currently available camera phones. Talk about technology.. ha!!
thomas1973 said:
Take a piece of tinfoil from the kitchen, prick a tiiiny hole
through the middle with just the tip of the needle, then wrap the
tinfoil around your lens mount, with the pinhole as centred as
possible.

YOU HAVE JUST MADE YOURSELF A LENS! :-))

Here are some examples. Not very interesting, but just to show that
it works, and the image quality you can expect:

I'll try to shoot something more interesting later, and maybe some
of you guys can contribute too? :-)

Thomas.

===================================
Some explanation and advice:

I made the hole by placing the tinfoil on the table, and just
pricking the tip of the needle through the tinfoil - not the whole
needle, just the tip.

The size of the hole is not critical, neither is the positioning
over the lens mount. Just allign it as best you can.

The hole you made, is your tiny aperture, and because of the tiny
size, it also 'focuses' the light. The smaller the pinhole, the
longer the shutter speeds, but the sharper the images you get. So
you have to find your own balance here. You can always make a new
one :-)

You need long shutterspeeds, because of the small hole. Put your
camera in M mode. Just try it out, and watch the result on the LCD.
You probably need a shutter speed of several seconds.

BTW, the black dots on the images are the dust bunnies on my
sensor. Because of the small aperture, they turn out very clear.
===================================
Click to expand...
--
=========================
Jerry 'Knopfler' Yang, HsinChu, TAIWAN
http://www.pbase.com/knopfler
http://www.knopfler.idv.ms/photos.htm
 
secure one end of a heavy rubber band to the bottom of your kitchen cabinet and the other end to your D70. Use the remote to operate the shutter. Pics to follow.
thomas1973 said:
Take a piece of tinfoil from the kitchen, prick a tiiiny hole
through the middle with just the tip of the needle, then wrap the
tinfoil around your lens mount, with the pinhole as centred as
possible.

YOU HAVE JUST MADE YOURSELF A LENS! :-))

Here are some examples. Not very interesting, but just to show that
it works, and the image quality you can expect:





I'll try to shoot something more interesting later, and maybe some
of you guys can contribute too? :-)

Thomas.

===================================
Some explanation and advice:

I made the hole by placing the tinfoil on the table, and just
pricking the tip of the needle through the tinfoil - not the whole
needle, just the tip.

The size of the hole is not critical, neither is the positioning
over the lens mount. Just allign it as best you can.

The hole you made, is your tiny aperture, and because of the tiny
size, it also 'focuses' the light. The smaller the pinhole, the
longer the shutter speeds, but the sharper the images you get. So
you have to find your own balance here. You can always make a new
one :-)

You need long shutterspeeds, because of the small hole. Put your
camera in M mode. Just try it out, and watch the result on the LCD.
You probably need a shutter speed of several seconds.

BTW, the black dots on the images are the dust bunnies on my
sensor. Because of the small aperture, they turn out very clear.
===================================
Click to expand...
--
http://www.pbase.com/gwm247
 
You must log in or register to reply here.

Keyboard shortcuts

f
Forum
m
My threads
Mobile site
About
Editorial content
Cameras & Lenses
Community
All content, design, and layout are Copyright © 1998–2025 Digital Photography Review All Rights Reserved.
Reproduction in whole or part in any form or medium without specific written permission is prohibited.
When you use DPReview links to buy products, the site may earn a commission.
©GPS Media - Guides, Products, Services.
Back
Top