> Will D. wrote:
> > I remember hearing the opinion that 16Mp was approximately the
> > equivalent of 35mm film. If so, Canon's there.
> > Opinions/comments?
> > Will D.
> All the previous posts carry with them the myth that all you can do with
> a digital image is print it at it's initial resolution. This may be
> (almost) correct for cheap sensors recording lots of noise but certainly
> not for quality DSLR sensors.
> The process of enlarging digital images is called "Interpolation". This
> is the digital version of the old optical enlargers. My business
> operates a digital print lab in Australia which specialises in enlarging
> digital images.
> I regularly enlarge 4, 5 and 6 Megapixel images to poster prints 24" x
> 30" and 36" with absolutely stunning results. At least one of the
> responders to this thread seems to think the process is flawed and what
> I do for a living cannot be done. Odd that, considering the electric
> growth of my business in a rural region and the number of prints made by
> others doing the same thing.
> 35mm film has a number of issues when converting to digital or enlarging
> through diffused light and simply put, cannot be enlarged as cleanly or
> as big as a digital image.
> Digital images are nearly pure data. A scanned 35mm image has around 30%
> noise (some as much as 60%) which has no value on the image except to
> degrade it so... The attempts to compare a 8 or 16 Megapixel image with
> a film image are all invalid by virtue of the finished print or picture
> being the only truly valid comparison.
> What I would like to hear is the purpose a 16 Megapixel image or a 35mm
> image will serve. I always thought the purpose of a negative was to make
> a print and it was that print which became the photograph.
> When you consider a digital image, really it is just an electronic
> negative (or positive). For it to become a photograph it too need to be
> printed. It is the final print which matters, not the medium it is
> produced from, therefore... I offer the suggestion that at 4 (four) mega
> pixels, full frame DSLR cameras exceeded the (printable) resolution 35mm
> film could be usefully printed at and now, all the additional pixels do
> is bolster the advertising as true professional digital camera reach and
> exceed previous boundaries of film.