nick mulder
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- May 15, 2005
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A computer file.
I mean the original print from that computer file ...
What is it ?
A computer file.
I mean the original print from that computer file ...
What is it ?
Pinhole? No lens.
It isn't important in the least, simply the actual definition: "drawn with light"
The "end" as you call and dismiss it, is what we labor to create. The whole point of the endeavor. The result. All else is process.
I doubt Fox Talbot or Niepce would consider depositing pigment on a substrate in a mechanical fashion drawing with light. I do think they would be fascinated with the process.
I do know definitely from long experience that you are always right, so I'll leave it at that, and perhaps peruse your further gyrations around the definition if I feel inclined to do so. Enjoy.![]()
Since we are splitting hairs, a pinhole is a "lens", because it focuses light at a particular distance. Just doesn't have glass.
While we are splitting hairs: a pinhole does not focus light at all. (Can't, because it doesn't have that glass.)
It just restricts the angle of view rather seriously.
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You're so focused on that end thing that you no longer see that that drawing with light thing is how it all begins?
If you want to see a photograph, ask about how something started. Not how somethng ended up.
A pinhole restricts the size of the circles of confusion, so if you are talking about points of light, yes that angle is restricted, and that is how it focuses the light. Depth of field is infinite. The pinhole is absolutely functioning as a lens. Your contention is that a lens must be made of glass? That's about as silly as ink making a photograph. In any case, you are of course, right.
In addition, a pinhole has an aperture, a focal length, and thus an f/number. It creates a circle of confusion and has infinite depth of field as mentioned above of focus, and thus it also has infinite depth of focus. And creates optical aberrations.
Sounds like a lens to me.
A pinhole restricts the size of the circles of confusion, so if you are talking about points of light, yes that angle is restricted, and that is how it focuses the light. Depth of field is infinite. The pinhole is absolutely functioning as a lens. Your contention is that a lens must be made of glass? That's about as silly as ink making a photograph. In any case, you are of course, right.
Since we are splitting hairs, a pinhole is a "lens", because it focuses light at a particular distance. Just doesn't have glass.
The CoC of a pin hole is comparable to the hole diameter only if the incoming light rays are nearly parallel. As soon as your subject comes closer, your CoC gets larger. If object distance from the pin hole is equal to the distance between pin hole and film plane, your CoC has already doubled. You can't refocus a pin hole, but it does have a subject distance of minimal CoC: infinity.Using a pinhole, there is no plane of focus. No focussing distance nor fixed hole to film distance. No focus at all, in fact. No "f-stop".
It becomes an object because of its boundary. Its the fact that it is surrounded by intransparent matter that creates its optical properties.How can a hole be a lens? A hole it's not even an object. in a sense it doesn't even exist. It's space.
How can a hole be a lens? A hole it's not even an object. in a sense it doesn't even exist. It's space.
... I believe that a photograph in the strictest sense is a physical artifact created by light on a light sensitive surface.
A photograph is a thing, not a workflow, interpretation, or concept.
An inkjet is an illustration, because it is an artifact made from ink and paper. Indeed an inkjet printer will make an illustration of anything you send it. That's what the thing does. It's very simple, can't be argued except obtusely, for all the harrumphing around doesn't change the physical properties of the things, which anybody can witness, unless they are so vested in validation that they deny actual physical reality. I'll say it again, it's not how, it's what.
How can a hole be a lens? A hole it's not even an object. in a sense it doesn't even exist. It's space.
I suggest that we call a lens that bends rays of light by the process of refraction a "Genuine Lens". In fact, I've invented a label for it.
I'm not convinced that the question of photographing a digital composite has been fully addressed. It might indeed be possible to make a photograph of the composite and an inkjet print of the composite appear so similar as to be indistinguishable, in which case the concept of "Genuine Photograph" becomes less meaningful except in the strict technical sense. In fact, it's quite possible to deceive the viewer with a genuine photograph prior to releasing the shutter; it doesn't just have to be done by manipulation afterwards. For example, items could be selectively omitted from a picture by (in)appropriate framing, or the scene could be modified by introducing optical illusions using mirrors etc. So is it not also part of the "Genuine Photograph" concept that the photographer give an honest description of what it is that they have photographed?
When is a photograph not manipulated?
Does pulling and pushing count? Development duration and contrast control? Choice of developer and/or film to influence grain? Filters used on the lens? The choice of paper grade? Spotting? Dodging and burning? 'Alternative processes'? Etcetera.
As it is, i think this a completely unusable, because empty, concept.
But the arguing process back then was a least enjoyable. This is more like getting a root canal and waking up with the throbbing pain that just won't go away.
The best of phony name brand watches might only be discernible from the original by a person who knows a lot about watches. Does the difference cease to be meaningful?
The best of phony name brand watches might only be discernible from the original by a person who knows a lot about watches. Does the difference cease to be meaningful?
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