What is the resolution in pixels of a standard photographic positive print on 100 asa film?

Answer 1

That is a tough question because film really doesn't have "pixels". The rough equivalent is the molecules of silver compounds in the film coating. But they don't function exactly the same either.

So the answer is subject to a lot of debate.

I think the best answers are based on equivalent enlarging and printing performance. By this measure, a good lens in an 11 to 15 megapixel camera can match 35 mm film. (The film speed (100 asa) does not matter to resolution.)

But it only matters, in a practical sense, when you are printing big enlargements. Good lens 4 MP cameras can make good 8x10's, and good lens 6 MP cameras can make good 11x17's. If you are not printing bigger than that, the higher resolution just doesn't matter. Our eyes cannot see any more detail in smaller prints.

Good Luck

Answer 2

In excess of 300 dpi or pixels per inch, It doesn't really convert directly.

If you are scanning a colour photoograph then 300 dpi will give you a quality that can be handled by the average colour printer, which will be your limiting factor.

The dpi rate only gives you the ability to enlarge digital photographs, i.e. if a 7x5 photo is scanned at 300 dpi and then enlarged x2 the print dpi will be 150 dpi effective or half as sharp, try doubling it again and the result is really blotchy.

With high resolution cameras you can get sharp prints up to A3 size from a 8 megapixel without chromatic aberration depending on how good the lens is.

You will find it very hard to achieve this with a standard 35mm camera using 100 asa film.

Answer 3

Print resolution (for digital or film) is about 300 dpi for great quality. At this resolution, you can press your nose to a print and see tons of detail.
I'm not sure where you're coming from, but if you're trying to compare film to digital, a 35mm color film negative is equal to about 8 Megapixels of information. High end digital SLR cameras - notably the Canon 1Ds Mk2 - can comfortably out-resolve 35mm color film.
On the other hand, 35mm black and white film (when used with a stellar lens) can yield as much as 25 Megapixels of information.

Answer 4

On a standard 6x4 to 7x5 around 10 MILLION.
BUT 3 million is more than enough! digitally.
ANY MORE magnification and you will be needing 5 to 6 million to print-up superb prints to A4. Actually for most peoples photography 3 million pixels is more than enough.... if you just want standard print-outs.
I guarantee if I took a photo at 3 million pixels and just made a standard print you would be astounded at the quality. But then you knew that anyway?

Answer 5

Quite a controversial question! Can mean many things to many people.

The maximum resolution you can sensibly scan out of a 35mm negative is somewhere around 10-12 megapixels depending on who you speak to.

For an example of what this means, a 3000x4000 pixel image is roughly 12 megapixels. N.B. this is typically a 36 megabyte (MB)file uncompressed (i.e not a jpeg)!

Digitally printing at 300dpi (which is typical) would give you 10 inches x 13.3 inches.

Answer 6

Lots. Regular digital cameras still can't beat slide film imo, medium format digital probably could though. Another thing about film is that it usually has a much better range than digital, as in it can pick up more tones such as shady ground plus a bright sky with clouds. Digital cameras can rarely pick up both in the same shot.

Answer 7

Film does not have pixils, pixils are only in digital pictures. the film has grains instead. and a 100 ISO film should give you excelent quality for 4*6. thats because i used a 400 ISO film which has les contrast and i was able to develope pictures up to 8.5*11'', so your film is much better. i agree with fredship

Answer 8

I believe that would depend on the particular film. Is it color or b/w? What format? 35mm, 2x2, etc. Kodak, Fuji?? Also the quality of the print paper. How good is the enlarger? And on and on. It's well up into the millions at any rate.

'nuff said?

Answer 9

this is also govened by many factors...amount of detail in the shot apart from anything else. These days the cameras will take great shots if set up right.....but its then down to the printing equipment/paper/operator etc as to how well they come out

Answer 10

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