Digital BW, The Print

A 16megapixel camera gives an 8bit RGB file of around 48MB.

Stop being a diehard !

TonyR

 On 08/12/2005 11:15:06, garethjolly wrote:
> I'll confess, I'm a film die hard.
> 
> But I recently saw a very impressive print from a Canon 16 megapixel SLR.
> 
> It would have been maybe 1.2 x 40 cm.
> 
> Now, logic tells me film should be better.  I scan a B&W image at 4000
> dpi - it resolves down to a level where the grain is just perceptible
> as film grain using Tri X developed in Xtol.  That yields a 42MB file
> with 16 bit grayscale.  And that's B&W so a colour file would be
> around 120MB.
> 
> So, how can a 16 megapixel colour image (say 6MB grayscale image)
> compete with a 42MB file?
> 
> Is this correct or am I missing something?
>

Tony Riley wrote:

>A 16megapixel camera gives an 8bit RGB file of around 48MB.
>
>Stop being a diehard !
>  
>
If it's only resolution that you are interested in, those figures tell 
the story.

Film (esp. B&W negative) has a much broader espouse latitude and a 
generally finer gradation of tonality. However, even if you have that 
information, the trick is getting more onto a digital print or a silver 
print from a film negative.  There are also silver based emulsions (like 
Kodak HIE) that you cannot recreate the tonal effects from simply by 
running a Photoshop filter on and then converting to B&W..
Keith

 
Keith Krebs

"Just some guy," caretaker of the Multiverse's largest EPSON printer 
User Community (highly recommended by Vogon Poets and MegaDodo 
Publications), at:
http://groups.yahoo.com/group/EPSON_Printers/
and  the Multiverse's largest Canon printer User  Community at:
http://groups.yahoo.com/group/Canon-printers
"For the rest of you out there, the secret is to bang the rocks together 
guys"

Some aren't going transition for a while, if ever, because current
concepts should be retired within in a year or two. After all, who
wants to get stuck with $10,000 worth of antiquated EOS or Nikon
digital SLR concept?

One reported factor should be the new concave chip from Kodak et
al...higher-than-10MP resolution, designed specifically to facilitate
much smaller cameras and lenses: allegedly Leica's perpetually-pending
digital M, which would involve Panasonic.
 
Another is Konica/Minolta/Sony's alliance, which is about to produce a
much higher resolution, image stabalized digital SLR as well.

Why "go digital" just because it's available? If one's happy with
one's film strategy, why change? Perhaps one would move instead to a
larger or smaller film format, just for the aesthetics. Or perhaps one
would rather move from B&W prints to B&W videos? :-)


> A 16megapixel camera gives an 8bit RGB file of around 48MB.
> 
> Stop being a diehard !
> 
> TonyR
> 
> 
>  On 08/12/2005 11:15:06, garethjolly wrote:
> > I'll confess, I'm a film die hard.
> > 
> > But I recently saw a very impressive print from a Canon 16
megapixel SLR.
>

>A 16megapixel camera gives an 8bit RGB file of around 48MB.

And lets not forget that digital has no grain. There's also
economics to consider. If you shoot a lot of film the savings
on processing will pay for the camera in short order. My 1DS
Mk2 paid for itself in 4 months. Your milage may vary.

Regards, Walt

http://www.kauaiphotos.biz

Digital Photo Pro magazine has a really good article on several methods for converting color images to black and white, and it goes way beyond just converting them to grayscale.  It's the issue with a BW of Sharon Stone on the cover.
   
  Megan


 

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Was she converted?
:)
Mark

On Dec 8, 2005, at 6:11 PM, Megan Milligan wrote:

> It's the issue with a BW of Sharon Stone on the cover.

I think so.  She was mostly composited.
   
  M.

Mark Savoia <mark@ctphoto.com> wrote:
  Was she converted?
:)
Mark

On Dec 8, 2005, at 6:11 PM, Megan Milligan wrote:

> It's the issue with a BW of Sharon Stone on the cover.



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