Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@y..., Godfrey DiGiorgi 
<ramarren@b...> wrote:
> If you compare the scans made with the Minolta Scan Dual II and 
Epson 2450
> that are included in the package from 
> 
<http://groups.yahoo.com/group/SeePhoto/files/Godfrey/scaneg/reztest.z
ip>,
> I think you will see that the 2450 returns at least close to its  
rated
> 2400 ppi in comparison with the Minolta's rated 2820ppi. I have not 
done
> tests of a calibration negative (have to obtain one, haven't had the
> time) but my eyeball estimation is that it's delivering on its
> specification properly. 
> 
> I've been able to make some remarkably good 13x19" prints from 645 
and 6x6
> scans with the Epson 2450 at a nominal 300dpi output resolution.. 
> 
> Godfrey
> 
> On Tue, 9 Jul 2002, heliar333 wrote:
> 
> > Having read at www.kenrockwell.com that flatbeds often deliver 
only 
> > 60% of their promised resolution, I decided to test with my own 
> > equipment.
> > 
> > I have both an Epson 1640 and a Minolta Dimage Multi Pro. The 
Epson 
> > claims to deliver a 1600 dpi scan, but in fact, it most closely 
> > matches the Minolta at 800 dpi. SO I'd say that 60% is probably a 
> > good number.
> > 
> > On the other hand, I find that the Epson does a better job 
getting 
> > true colors off the film, and has a smoother, broader range of 
grey 
> > values. 
> > 
> > Applying the same logic to other Epsons, I imagine that the 2450, 
> > which claims to get 2400 dpi, delivers somewhere around 1500 dpi. 
At 
> > 300 dpi output, this means a maximum enlargement of 5x. For 4x5, 
this 
> > equates to a little under 16x20. For smaller film, 5x gets small. 
But 
> > you get what you pay for - unless Epson has plans to deliver a 
real 
> > 2400 dpi scanner soon. I'd gladly pay teixe the current price.
> > 
> > In the meanwhile, I have my sights on the Microtek Artix 2500. 
Others 
> > have attested that it delivers a genuine 2500 dpi. At $3500, it 
ought 
> > to. I have seen some gorgeous quadtone prints by Richard Wolfson, 
who 
> > uses an Agfa 2500 (made by Microtek) for his 4x5 negatives - and 
they 
> > are stunning and sharp at 20x24 inches and beyond.