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Emmanuel,
I'd love to have some more detailed info on Arca's LulF camera:
How much movement does it provide at the front and rear standards? Any geared movements?
Does this P1 type front carrier...

Hi Rob,

I'm running ScanXact 16 on a dedicated OS 9.2.2 G4 Mac. ScanXact 16 is the only ICG software I'm familiar with. 16 is the update where they added the option to output 16 bit files. It...

For a high quality 15x enlargement you would require a scan of about 4500 ppi. At this resolution a good drum scan will look much better than any Epson scan, not only in detail level but also in...

I agree that at higher resolutions the tonality of most films can be described accurately at very low bit depth. But the data needs to be optimized to use the lower bit depth properly. On most...

It's kind of the other way around. We weren't officially married when I took the photo last year but now we are for a little over a week.

-Dominique

I shot this portrait of my wife Kathi one year ago:
http://www.high-end-scans.de/img/bilder/web/DV101009_01_res4.jpg
Larger

-Dominique

Hi Ramon,

I used the scanner target made by Ivan Danes (Danes Picta) to test my scanner. Just look under pre-press. The highest resolution pattern on that target is 250 lp/mm. The price was €67 in...

Sandy,

from my point of view all of your three scan samples have some problem or another.
I find the Epson the most pleasing as it has the most consistent rendering of film grain and therefore...

How can you match a negative to a slide if the color separation of subtle hue and brightness differences isn't recorded on the neg in the first place?

It's one thing to get a meaningful response...

At the WPPI convention Kodak announced the new Portra 160 replacing the NC and VC, just like they did with the 400 a couple of months ago. I only read about it this morning in a German press release...

If you do not intend to do close up work with these long lenses the 50 cm rail will do. It gives you enough extension for the full 70 cm bellows.

I used the long bellows with the 110mm lens...

Rick, I think you got it pretty accurate.

The advantage of having a strong sampling signal of high bit depth shows when scanning negatives where the image dynamic range is compressed over a range...

I think you're right that the issue you have is about film real estate. If you have a certain print size in mind e.g. 40x50" the grain structure of your 4x5" film going trough a 10-12x magnification...

Lenny, I confused the number of values in 14 bit and 16 bit. My mistake! 64K values is of course correct for 16 bit. So a 16 bit ADC is sufficient for the 20K separations of the PMT.

Ok, I think I...

I didn't take it as personal offense. On the contrary, I do welcome real honest opinions, and hopefully we can all learn from each other.

Yes, it is the theoretical Dmax value for any 16...

It probably wasn't necessary to do a scientific analysis outside of an engineering level. There was the Seyold Report where a bunch of prepress scanners were evaluated.
I agree that the expert eye...

That's great. Somehow I must have missed that they have the review text up in different languages.

-Dominique

It is not that simple that the system resolution is limited by the weakest link in the chain. It's rather a function of contrast of all the links combined, and the weakest link reduces the overall...

I agree. A scanner designed for higher resolutions usually performs better at lower resolutions than a scanner being at its limit at 4,000 spi. Any idea how the old Linotype-Hell scanners performed...

It really depends on the lens and film combination you're using but first of all on what's practical to you.

Take a sharp Zeiss lens on high resolution 35mm film like Spur Orthopan UR (ASA 12)...

The resolution of film based images depends to a very large degree on the contrast of the detail at hand. If you shoot a printed test target of black and white lines (about 3 stops contrast ratio)...

Hi Ian,

thanks for the explanation.

The values you calculated are the exact step or sample widths for the equivalent resolutions. If the micron values were the diameter of the sampling spot...

How does the micron value of a drum scanner's aperture actually translate to the physical aperture of the scanner? The resolution aperture is obviously a circular hole. Is the micron value the radius...

One thing to consider when interpreting these resolution figures is contrast. A scanner target like the USAF1951 retains very high contrast up to the higher spatial frequencies, much higher than what...

What about scanning at higher res in smaller strips and stitching? Would that work with the X5 to achieve larger files from larger films?

-Dominique

...and the last two.

http://www.high-end-scans.de/img/bilder/DV090531_09_270ppi.jpg

http://www.high-end-scans.de/img/bilder/DV090531_10_270ppi.jpg

-Dominique

This is a series of five images I photographed one year ago over a period of 104 minutes on the evening of May 31st, 2009.

http://www.high-end-scans.de/img/bilder/DV090531_04_270ppi.jpg
...

There're several approaches, and some were already mentioned in this thread:

- Use the highest optical resolution of the scanner to get the most information out of the film. But at very high end...