Thanks for 10600dpi crops, fventura.
So, we now know that 10600dpi is indeed interpolated.
I think the Plustek 120 resolution marketing mistery can be explained like this:
- 10600dpi sensor
- stepping motor can only move in 5300 steps per inch
- real resolution is lower than 5300dpi
edit: Strike that. Given the orientation of the scans, lower stepping motor resolution does not explain horizontal lines in 10600dpi scans. Hmm... Maybe it has something with the sensor photosites arrangement.
For me it looks like
a) the pustek has not the same horizontal/ vertical resolution. Remember there is resolution of carriage and resolution of sensor/optics.
b) there is a flaw with algorithm and it makes these jagies (not likely)
On the plus side, the 10600 scans from Fabio don't show any jaggies/faint lines (vs. 5300 ones).
I think that scanning at 10600 and then resampling (in Photoshop or whatever) to the final requested size could be the way to extract maximum image quality from this scanner.
First thing I tried was to resize the 100crop version 50% is PS and it made no change, jagies are still there. And yes I tried all resizing options.
Considering you must use microcontrast adjustment anyway this is a serious problem,nobody want their scans look flat.
But, of course, the main issue is film flatness and focus plane consistency.
Not only fixed focus may be an issue with curled film, but also for production tolerances (which may affect the scanner and the holders!), wear, thermal-induced size variations etc.
We're at 5300 ppi here: every micron of deviation counts and can't be compensated by adjusting focus, since it's fixed.
Exactly what I was thinking, someone from plustek obviously will eat their nails for not including he focus mechanism. When I asked my colegues would they buy a professional scanner that would scan better then Nikon9000 but had no autofocus, the answer was who could be crazy enought to try to maket such a thing in the first place, no autofocus means glass holders, dust problems etc. When I told them there are no glass holders their were shocked and said this scanner will be short lived for sure.
IMHO the companies just don't want to make one, 10 years have passed and we are introduced a scanner without autofocus? We have all there precision mechanics in HDD's for decades yet nobody makes scanner carriage that moves at least 1/10 as precise?
Plustek obviously did not want to sell the nikon9000 killer or anything close, they wanted to test the market to see would it be selling at all. Now if this model will sell OK, they should release updated version ASAP, otherwise nobody will be interested in buying it cause they will remember what crap was the first version, remember you lie once, and nobody will believe you afterwards. And so far the plustek opticfilm 120 is a lie.
Resolutions is not even 4000dpi
Microexposure doesn't work
Frames can't hold film flat (and mark druziak was swearing that it would)
Glass frames are nobody to be seen
Multiple passes just for the dust removal, doesn't seem high tech to me
I'm glad they released it but, why it must so cheaply made? Yet the price is so high.