Super high resolution printing? - DPChallenge Forums

Canon 12x IS USM (S3 IS built-in Lens) -- 36-432mm (35mm EQ)

09/04/2008 03:28:22 PM · #1

Short version:
Anyone know where I can get something printed on a transparency at 2500 DPI?

Long Version:
So,

krnodil has got me thinking about zone plates. I found what looks to be a great resource for creating my own zone plates (they do all the math and actually generate the image file), but I now need to print the output at 2540 DPI on a transparency. Anyone have any idea where I could get this done? I have no desire to buy a printer, by the way, I would just like to walk in somewhere and get it done (or, less ideally, send the image somewhere and have the results shipped back). Just for kicks, I called a local Kinko's but the woman I talked to didn't seem to understand what I needed (so I still don't know if they could actually do it). Anyone have any other ideas?

GeneralE

Canon PowerShot S3 IS

09/04/2008 03:45:21 PM · #2

You might try a place which images slides/transparencies from files (e.g. Cantoo in Berkeley).

If you just need high-contrast B&W, I can image to graphic arts film at 2400 dpi at the place I work. I've printed patterns of black lines on clear film before.

What kind of file did they give you?

Message edited by author 2008-09-04 15:48:56.

Canon EF 100mm f/2.8L Macro IS USM

09/04/2008 04:01:33 PM · #3

It is just B/W. Here's an example of a zone plate image:

It's basically exactly that, printed at 2540 DPI (which makes the diameter of the outer ring about 3mm when printed). The output from the site I am using is a png file.

Sent you a PM, Paul.

Message edited by author 2008-09-04 16:17:18.

krnodil

Canon EOS-5D Mark II

09/04/2008 05:24:41 PM · #4

I watch with interest. Good luck with this, sorry I can't offer any constructive advice. This is exactly the issue that led me to buy a pre-made one. Do post how it works out for you.

Canon 12x IS USM (S3 IS built-in Lens) -- 36-432mm (35mm EQ)

09/04/2008 05:58:43 PM · #5

Originally posted by krnodil:

I watch with interest.

I thought you might. :)

You totally got me hooked on the idea, and by gosh I'll get one made yet! Hopefully the General can help us out.... Of course, if anyone else has any ideas, feel free to jump on in here!

GeneralE

Canon PowerShot S3 IS

09/04/2008 06:08:08 PM · #6

It looks like something I can output, but only at 2400dpi, not 2540. Not sure what to do about that except re-sample, if the physical dimensions are what's critical.

I'm going to PM you an alternate email where you can send the file and I can test it out -- include your mailing address.

Mephisto

Nikon Coolpix A

Panasonic Lumix G 14mm F2.5 ASPH

09/04/2008 06:27:08 PM · #7

just because i'm interested:
why would you wanna do something like this? i mean what's the use for you?

darnok

Nikon D850

Nikon AF-S Nikkor 16-35 f/4 ED VR

09/04/2008 07:11:07 PM · #8

Originally posted by Mephisto:

just because i'm interested:
why would you wanna do something like this? i mean what's the use for you?

You use it like a lens, pinhole camera style - from what I gather the diffraction pattern caused by the concentric circles focusses an image.

GeneralE

Canon PowerShot S3 IS

Canon 12x IS USM (S3 IS built-in Lens) -- 36-432mm (35mm EQ)

09/04/2008 07:17:58 PM · #9

So, when I set your file to 2400dpi, I get a square about 2" with a teensy pattern about 1/16" in the middle -- if you're making something like a pinhole camera that should be about right.