HARDWARE AND SETTINGS COMPARAISON

[Curiousjeff]

This thread is for comparing what combination of hardware (camera and projector ) and settings (David, camera, projectors) gives bad, good or excellent results.

I find it difficult for newcomers or does who want to upgrade their hardware to get this information easily.

Seeing what others were doing, I read a good part of this forum, tested 3 different projectors and 6 different cameras/acquisition methods.

Please feel free to contribute with your own combination and as much extra information as possible :

Calibration Corner type (negative-postive) / Calibration scale size / Horizontal - Vertical
Projector / native resolution / used resolution /frequency settings
Camera, lens, shutter speed, aperture, resolution used

David settings : number of patterns

The more information the better.

Jeff

[Curiousjeff]

This first test is comparing the same setup with three different acquisition methods:

Calibration panel positive (from David laser kit) , 120 mm

Projector NEC V260X native resolution 1024 x 768

1) Canon 60D Live view 27 patterns (1056x704)

2) Canon 60D + Lestcan + image grabber 21 patterns (2592 x 1728)

3) Nikon D5200 + Blackmagic capture card (1920 x 1080)

Comments:

1) I get much better results with NEC then with the Acer K135i which causes surface artifacts (I will post some test in the future with the K135i). Maybe a frequency issue or the "diamond" shape of the pixels of the DLP chip of the Acer.

2) I did not use MagicLantern in these tests for the Canon live view

3) Letscan is a little better then the Nikon + HDMI but the Nikon solution is very fast and simple (less then 15 seconds per scan)

4) Both Letscan and Nikon are much better then Canon live view

[Curiousjeff]

More

Even thought the sneaker was scanned by three different methods, they align perfectly.

[Curiousjeff]

A Vivitar +2 close-up lens was added to the NEC on all these scans

[Curiousjeff]

The kitchen paper test

[Curiousjeff]

more

[Curiousjeff]

Test with the Logitech Pro 9000 (1600 x 1000 @ 5 fps)
Horizontal setup

[Curiousjeff]

Different number of patterns with same setup

NEC V260X + Nikon HDMI (same as above)
David 4
Horizontal setup
Positive panel

Made only one calibration at maximum # of patterns. Used same calibration for all four scans

# of patterns
Speed (12)
Default (22)
Quality (29)
Custom (34)

[DerHuette]

Thank you so much for starting this thread, Jeff! This is what newbees like me really need.

I hope there will be much contribution!

[micr0]

Thanks Jeff.

The NIkon/HDMI Seem very good considering the speed.

I hope to have a new projector to try against the Optoma ML550 I've been using and can run through some parameter variations. I'll post when I have something to add.

µ

FWIW I also finally have a computer with a USB3 port and will be looking at finding a USB3 camera and trying to decrease my scan times. Again...Stand By

[Curiousjeff]

Made a Canon lens to Nikon body adapter to mount my Canon 60mm macro lens onto the Nikon D5200

Cannot focus at infinity, but that's not my concern,

Works great.

This setup:

Vertical
Calibration panel negative 33 mm
F-stop 18, shutter 1/60
Patterns 29
Nikon D5200 + HDMI capture card
+4 close up lens on projector NEC v260x
Smooth average: 0

Figure height: 10 cm

In regards to the speed of scanning, 15 seconds, this is my hardware:
Intel Xeon E5-1620 v2 @ 3.7 GHz
Ram 64GB
Windows 7, 64 bit
SSD hard drive
Nvidia quadro K4000

[Curiousjeff]

The original

[DerHuette]

Hi!
I've got an Acer K11 and a Canon EOS 550D now and finally can contribute to this thread. My main problem is that I get vertical stripes in a horizontal setup and horizontal stripes in a vertical setup. I tried Magic Lantern Settings as described in the forum here but it doesn't help. Maybe I do something wrong. The best solution for me is a diagonal setup.

Diagonal Setup

diagonal setup

And the kitchen paper test result. Not bad, I think, but room for improvement. Setting 'Quality', everything else unaltered. 151mm calibration board. No extra lenses on projector and camera (EF-S 18-55mm). Live view.

kitchen paper

[Curiousjeff]

I find your scans very good.

Horizontal or vertical would save you time.

Did you try the camera like this ?

Set my Canon camera as NTSC
Frame rate 15 FPS
Shutter 30

[DerHuette]

Yes, that's what I did! But there still are dark bars (not colored!) slowly moving from bottom to top of the live view.

I am asking myself, as I live in Germany and as there is 50Hz in the power supply system, should I use PAL and 25 (or 12.5) fps? I'll do more testing...