WOW 256? by 48 it was already enough in Feature mode on most shiny white objects , unless there is lots of reflections , it also depends of the material the object is made of .
I did ask for Gain reduction already yesterday , so hopefully by the next update we get it . The gain slider do not increase actually the IR sensor level , as I tested it yesterday and capture the IR levels on the turntable . It is software controlled , the Depth sensors to be exactly .
I also got the pattern sharper but guess what ? it did not worked well, the model has lots of ridges , come to conclusion that the sharpness of the pattern do not matters , what matters is the proper level and strength of the IR , since the IR is not constantly on and actually blinking , the slower turntable capture accurately better the surface .
I am going to make one more IR test today to see the results and have my final conclusion .
Yeah, the Air 2S comes with a set of NDs that tops up at 32.
Unfortunately even in autumn sun, and not even noon, 32 was not enough to get 1/50s on a 25fps shot.
I needed a 64.
Bought a set that has 64, 128, 256,512.
Yeah, I forgot, I have a 512 ND 
I tried but for my HDRI CGI 360 degrees ( light ) photography it made things too blurry, I had to completely isolated the sun from any other ambient light possible in the scene in 13 EV+/- steps to make my maps latter producing proper light in CGI , ND did not worked for me at the end of the process , however it was great for Sun Eclipses . I ended using my Sigma 8mm lens with F8 ( sweet spot for sharpness) and automatic software that controlled my camera’s shutter speed for the best results expanding my EV steps to 23, ended up with a greater range of EV steps than the camera offered originally with a crispy images and full HDRI range that not one camera offers today out of the box .
Why I am talking about that, because that is what the Revo Scan software actually do , but the steps are much too great , and also not lower enough under the gain setting .
So, for the completely ignorant with strong google-fu (ie me) one finds something like
K&F Concept 58mm Variable ND2- ND400 Filter Neutral Density Filter Slim Adjustable Fader ND2 ND4 ND8 ND16 ND32 to ND400 + Lens Cleaning Cloth for DSLR Cameras( about £22 )
On Amazon
Is this the sort of thing you are talking about, and over which “eye” on the POP2 does one put such a lens.?
Clearly one needs to print a holder for the lens but it isn’t impossible.
I’m not intending to rush out and buy one, but at the moment my results are so rough as to be impractical to use, but then I’m trying to reproduce bits for equipment where spares are no longer available (like “black” gears with non standard teeth and unusual internal threads) and trying scanning rather than recreating the bits via CAD.
The ND gel filters are gelatin based cheap ND filters , helpful for objects that are white and scanned very close creating too much of a red gain area. Particularly for a small scans .
It can’t be placed over the Depth cam sensors , it is for the middle infrared sensor to reduce the strength on closer distance and slightly diffuse the projector pattern .
However the gain issue was addressed already and an upgrade to the software will be rolled out soon , so hold your horses …
Umm, we’re not too bright, are we?
This is basically an infra red projector - we don’t need ND filters - just blue filter is enough.
I tried it with light gels today and it works perfectly, so I assume all we need is a piece of blue transparent plastic or foil and it will do the job.
Since they are not optical grade we might actually get the diffusion effect PopUp was talking about.
Well that was the only thing I have laying around that works , but you are right , however we do not need it anymore anyway since the software is updated and released with lower gain range for my request , and I tested most all ranges before the programmers made it final and the currently one works the best for Both MINI and POP2
MINI Blue light projector need to be sharp and not diffused , and not slow rotation , works little different , small dust particle can affect already the scan , different approach than with POP2 .
Woah, great to hear that 