Wandering Part II - DPChallenge Forums

Tamron SP AF 17-35mm f/2.8-4 Di LD Aspherical IF for Canon

02/08/2005 01:04:12 PM · #1

Just out and about again. This morning was a bit foggy so I decided to try to take advantage of the situation. This time however all I took with me was my pinhole body cap. All of the images below were taken with it at ISO 800 to help create some grain. I think they turned out well but I know some do not like how soft the images end up being. I, however, am one that really enjoys the mood it creates.

This first one has some rainbow lines throughout the image. Couldn't really fix it unless I made it B&W, so i just left it.

My favorites are the last three. Feel free to leave any comments or concerns.

Message edited by author 2005-02-08 13:04:54.

Tamron SP AF 17-35mm f/2.8-4 Di LD Aspherical IF for Canon

02/08/2005 01:22:47 PM · #2

Wow definately the wrong crowd to post these to. I appologize and will never do it again. I will let this thread die now.

Bear_Music

Samsung Galaxy S24 Ultra

Sony 24-70mm F4 Vario-Tessar T* FE OSS

02/08/2005 01:28:47 PM · #3

Personally, I think they're great. I love pinhole work. It was part of the early lessons when I taught photography.

But yep, this is probably the wrong crowd.

Robt.

Kylie

Panasonic Lumix DMC-FZ35

02/08/2005 01:30:15 PM · #4

Why do you feel like you shouldn't have posted these? I love seeing the DPC tastes stretched and is one of the things we need so much more of. I am on my horrible, murky monitor at work, so they are appearing a bit too soft for me (I like a soft, painted look in many photos), but I think they are very engaging and beautiful. My favorite on this monitor is the last one. I will take another look from home tonight.

Edit: Bear types faster than I do. I still hope you continue to show your work - some of us hope for this.

Message edited by author 2005-02-08 13:31:05.

zarniwoop

Nikon D50

Nikon AF Nikkor 35mm f/2.0D

02/08/2005 01:30:29 PM · #5

I love them. It's not often I can immediately say that about a set of photos without adding a 'but'. However they capture a perfect dreamy mood without seeming twee or cliched.

Beautiful.

But some of them were a little too soft. Perhaps you try some different angles?

Message edited by author 2005-02-08 13:33:43.

Tamron SP AF 17-35mm f/2.8-4 Di LD Aspherical IF for Canon

02/08/2005 01:39:48 PM · #6

First off, thanks for the comments and encouragement.
Second, I didn't mean that I wouldn't post again, just that I wouldn't post pinhole shots. And as far as composition goes, it is a bit tuff, being that you cannot see what you are pointing the camera at until you take the shot and it shows up on the LCD. The images have been sharpened quite a bit as well. Much more and it really starts to show. I know that with film while using pinholes I was able to get images much sharper, but forwhatever reason when doing it digitally, it comes out really soft. I know others that have done this and had the same results. So until someone figures out how to get them sharper in camera, that is about the best I can do. The hole makes and equivalent of a 50mm lens at f/180. The dia. of the hole is .011" and is made by a laser, so it is about as close to being a perfect circle as you can get.

Message edited by author 2005-02-08 13:40:19.

Bear_Music

Samsung Galaxy S24 Ultra

Sony 24-70mm F4 Vario-Tessar T* FE OSS

02/08/2005 01:54:36 PM · #7

A "true" pinhole camera has no optics; the image is projected directly on the film, and is always sharp in the center and progressively blurs towards the edges, unless the film itself is held in a curved plane so all parts of the film are an equal distance from the aperture.

When you do a pinhole emulation, the lens is attempting to do corrections for a situation that no longer exists, and introduces its own soft focus.

Robt.

Tamron SP AF 17-35mm f/2.8-4 Di LD Aspherical IF for Canon

02/08/2005 02:01:08 PM · #8

This is true pinhole bear. There is no glass, no optics, just a hole letting light in onto the sensor. The only difference in this and traditional pinhole is that the light falls on film in traditional, and the light is falling on a cmos chip in my versions.

Bear_Music

Samsung Galaxy S24 Ultra

Sony 24-70mm F4 Vario-Tessar T* FE OSS

02/08/2005 02:04:08 PM · #9

oh, gotcha. The issue here might be the point at which the true focus of the pinhole is throwing then. I don't know how well it's been engineered. for any given diameter of hole there's an optimum distance the hole needs to be in front of the image plane; the smaller the hole, the shorter the distance.

I don't know, I've never pinholed with dogital. For all I know the sensors don't like it as much as film does?

Robt.

02/08/2005 02:08:54 PM · #10

"Generally a smaller pinhole will produce a sharper image than a larger one. If the pinhole gets too small, the image becomes less sharp because of diffraction."

Might this be the issue?

02/08/2005 02:10:02 PM · #11

Also, the pinhole is much closer to the sensor than what is optimal, I'm assuming...is this correct?

02/08/2005 02:12:13 PM · #12

Oh, and I love your photos...

Tamron SP AF 17-35mm f/2.8-4 Di LD Aspherical IF for Canon

02/08/2005 02:19:16 PM · #13

Well I guess here is the issue, and I do not know the answer. The cap is designed to be placed on any EOS film camera body. This is what it was designed for. The distance to the film plane on the film camera is what I am guessing the people that designed the cap for took into account for an accurate size of hole. The hole is .011" in diameter. It was made in a thin metal plate by a lazer. I would guess this makes it damn near, if not exactly, a perfect circle. The plate is then glued to a body cap with a larger hole in it for proper fitment. According to the stats on the package, on a film body, the cap makes an equivelent to a 50mm lens at an apperature of f/180. That is a pretty damn small hole. So here is the issue. Is the cmos sensor at the same exact distance that the film would sit from the lens mount. If so, I think the only thing that one could conclude is that the digital sensor has a harder time rendering a sharp image without the help of glass then film would.

I hope this makes sense. Read it through a few times and see if it does.
If not sorry.

02/08/2005 02:24:25 PM · #14

There seems to be some good information and math at the bottom of this link...I haven't had a chance to fully dissect the information yet...

Pinhole Photography

And please keep posting them!

By the way, where did you get the pinhole setup? I think I'd like to get one...

02/08/2005 02:27:10 PM · #15

Wait a minute, stupid question...

Is it because pinhole photography isn't intended to be blown up? I mean, wasn't it always straight to paper?

If that's the case, it would explain why everything's super soft when enlarged from sensor size to computer monitor size...

Nevermind...found the answer, film is used as well. But paper (or large format) seem to be more optimal.

Message edited by author 2005-02-08 14:29:00.