Nov 162009

November 11, 2009:  The Imaging Source announced their GigE cameras to be available with 10Bit output, read the Blog post. Up to now all TIS cameras featured a 10 Bit analog to digital conversion of the CCD signal but only 8Bit output. The new feature supported by the YGB0 10 bit grayscale format will not be available for IEEE1394 and USB models but Gigabit Ethernet interface cameras only. The GigE models cost 150€ more than the Firewire/USB counterparts – not a too attractive pricing. The cameras seem to be identical to their 8Bit predecessors in terms of CCD selection and A/D conversion so that the additional quite expensive 2 bits are not too desirable. It has to be proofed that full well capacity of the CCD models and noise level of the cameras justifies these additional bits, I doubt any real practical advantage.

From my point of view moving to more than 8 bits for the GigE cameras only – otherwise unchanged – comes far to late. The new generation of cameras from other brands featuring new CCD models like the Sony ICX445, 12 bits A/D conversion or more and advanced features like true ROI, binning etc. look far more attractive – stay tuned for more camera news coming shortly…

Cheers, Oliver

P.S.: Taking a look at the maximum framerates of the GigE models shows that these are identical to the IEEE1394/USB2.0 models – no advantage here…

7 Responses to “TIS 10Bit DxKs”

  1. grayscale says:

    holding a 31 dmk, I recently purchased a point grey chameleon.
    for a little over 400 euro customs charges included, it offers a icx445 digitized on 12 bits and usb2. the sensor itself is quite noisy but its value lies in its extended sensitivity in the infrared.
    only the demonstration application supplied me regret ic capture : I have to save my images in PGM format and then convert it to fits. also the stability of this application is not perfect (I use it on your notebook PC with vista).

  2. Oliver says:

    Hi greyscale,

    many thanks for your comment. I’m highly interested in the Chameleon and am only waiting for the announced direct european sales channel to be established. Do you have any images taken with the Chameleon you might want to show? I’m a little surprised that the ICX445 is quite noisy. Ok, very small pixels…
    I heard similar comments about the supplied software.

    Clear skies!
    Oliver

  3. grayscale says:

    (I use google to translate what I write here, the result is sometimes curious…)

    I’ll try to post a dark in the coming days.

    weather of recent weeks does not allow me to get good quality images of Mars or Jupiter.

    I plan to make a web page with the comparison of my two cameras in 8-bit mode.

  4. Oliver says:

    Thanks, that would be great.

  5. grayscale says:

    hi there,

    with 8 bits image acquisition on the chameleon i have 0.38 adu rms noise at 0 dB and a conversion factor of ~26 e-/adu.
    at the maximal 24 dB gain (conversion factor of ~1.5 e-/adu) i have ~5.5 adu rms noise.

    i send you a median from a stack of dark images at 24 dB and lowest exposure time.

  6. Oliver says:

    Hi,

    many thanks for your perfect analysis. I’m trying to find some numbers for my current cameras to compare…

  7. grayscale says:

    hi,

    with 8 bits image acquisition on the dmk31 i have 0.55 adu rms noise at gain min and a conversion factor of ~59 e-/adu.
    at the maximal gain (conversion factor of ~1.4 e-/adu) i have ~7.7 adu rms noise.

    it seems slightly more noisy but i have to determine the real contribution of the ron .

Leave a Reply

(required)

(required)