CCD Blooming (CCD blooming)

A brief note about one of the shortcomings of CCD sensors.



On almost all old cameras with a CCD sensor, I observed blooming. Particularly susceptible to this phenomenon. old cameras on Sony matrices ICX-453-AQ and Sony ICX-413-AQ. A lot of blooming in my pictures was while working with the camera Nikon D40.

Blooming occurs when shooting bright light sources, or when shooting at slow shutter speeds. In such cases, the cells of the CCD matrix overflow with charges (light up), the charges 'spread' over neighboring cells, illuminating them as well. Since the data is read using the vertical shift method, the overflow is most noticeable in the vertical direction. In addition to the usual flare, other artifacts may appear, for example, the ladders shown in the title photo.

By the way, blooming is a stone in the garden of CCD-matrices and another reason for the massive transition to CMOS.







Blooming is a very unpleasant thing in astrophotography, where long exposures can be very get injured. Theoretically, since 2006, CCDs have a special modification that prevents blooming, but creates additional difficulties in signal processing.

But nothing, Juno still uses the Kodak KAI-2020 matrix (Kodak!) based on Interline Transfer Progressive Scan Ccd for its 2 megapixel Juno Camera. Despite the massive dominance of CMOS sensors, in medicine, astronomy, and areas of science where an accurate result is required, CCD-based developments are still used.

In the comments, we can deal with nostalgia for the old nice CCD-shny matrices.

Thank you for attention. Arkady Shapoval.

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Comments: 32, on the topic: CCD Blooming (Blooming CCDs)

  • anonym

    In the photo of Sudak, ARC?

    • Denis

      Yes, pike perch. But not the ARC :)

      • Serge

        All the same ARC.

  • Lynx

    Oh my ghoul, where are you? !!! (((

    • Yuriy

      ruthlessly sold, replaced by a new mirrorless, fashionable, with a printer :)

      • Lynx

        with longing and pity

        • Yuriy

          I'm sorry, I thought that the joys of the new Fuja are more than the longing for the old

          • Lynx

            he is awesome and strong in the subject, although this is not cheap.
            But if there was an opportunity, I would not want to part with the ghoul.

          • Lynx

            although maybe it's just imprinting.

            • Yuriy

              Impregnation is power, it's a pity to give it - I use it now as a color standard. Many people are nostalgic for the color of old cameras, like Canon fans for the first ones, for example. I think that this is not so much imprinting as a truly unique camera, which now has no full replacement in this segment. Although, modern cameras also have a lot of advantages :)

          • Lynx

            Yes. modern devices and the truth is not a replacement for him.
            even Fujiks with a non-Bayer matrix.

  • Evgeny_d60

    "In medicine, astronomy and fields of science, where an accurate result is required, they still use developments based on CCD"
    And what exactly does CCD give? More exact correspondence to real color?

    • Arkady Shapoval

      For example, Nikon's microscopes use CCD - In serious publications they write that CCD gives more accurate results.

      • Evgeny_d60

        There are also dual-chamber adapters on both types.

        "By attaching two EMCCD / sCMOS cameras to the microscope with the optional Two Camera Imaging Adapter *, simultaneous two-wavelength super-resolution imaging with excitation of 488 nm and 561 nm is possible."

  • Evgeny_d60
    Everyone can enjoy the photos taken by Juno

  • Dim

    Cool. How many did not photograph on D40 and D200 never saw such.

  • Michael

    No-no-no. CCD is like a drug, what the fuck is ChMOS. All you need is just a little knowledge, and there will be Happiness!

  • Felix

    On D50 D70 D70s D40s cameras, this fact always infuriated me, and sometimes it’s impossible to take a frame with the sun in the frame, even underexposing the frame about a stop so that there are no such stupid loops. On the D200 D80, this effect was not even possible to be achieved on purpose, although due to the green nature of the D200, battery consumption and total weight, I stopped on the D80, the D80 is actually the only Nikon camera with a chic color that is as devoid of the disadvantages of CCDs as possible.

  • Hsien

    I hate CMOS !!!

  • Pastor

    A watering can on a PZS :) Well, in general, I would not put the question like this - "CMOS versus PZS", but on the contrary - "CMOS together with PZS". I like to take cameras with different sensors for shooting. For example, d5100 for high ISO and video and d80 for color. A good set for any kind of shooting. It is necessary colors and conditions allow - ssd, little light - smos. As for blooming, I rarely meet with it and, in general, it does not cause great inconvenience, however, sometimes it interferes. But the number of frames where he would generally take a picture with a deliberate defect is, God forbid, 10 pieces per thousand frames. From pzs-s now I have d80, d200, d70s and fuja s5pro and someday I can only part with d70s, and even then, taking into account its price, he does his job excellently and it makes no sense to sell for 3-4 thousand.

  • Taras

    Indeed, the Philips MX 8000 IDT CT scanner uses 16-row CCD matrices in the scanner unit. Moreover, the matrices are more "ancient", less sensitive to fluctuations in air temperature and not so capricious in service. There are many parallels between a camera and a tomograph. Starting with the choice of the "zone of interest" (a kind of choice of the angle, that is, the area of ​​the body where there is pathology), exposure pairs (instead of the diaphragm - the collimator of the X-ray tube, instead of the shutter - kilovolts and tube amperage), ending with image processing (yes, raw data from the scanner in the tomograph is also called RAW). The CT even includes a special computer with its own mini-Photoshop with filters for different tasks (for bone fractures, for soft tissues, etc.). And about the signal-to-noise ratio in photographic art and tomography, in general, you can talk about a lot. There is even a kind of depth of field (the slice thickness is called), changing which you can achieve interesting effects.

  • varezhkin

    I caught such a thing on my D50 a couple of times when there is a very strong light source in the frame. here are the last ones:

  • Charles

    Yes, sometimes blooming in the forties. But nothing, let’s spill, go.

  • Andrey Super

    I changed the D60 to D300 but the colors are not the same, oh, not the same ... By the way, on my D60 I don’t remember such an outrage ... All the same, the 2008 model.

  • Dmitriy

    Arkady, in the very first photo, in addition to blooming, 2 spots are also observed below. What is this effect? I notice something like this on d200. Recently I watched a film on TV "The Other Side of the Moon", so the whole film regularly pops up such colored spots, clearly not "hares from the lens"

    • Vitaly N

      Just the same hare. From a lens or a protective filter.

      • Dmitriy

        Filter matrix? Or from the lack of a filter?
        On cmop-matrices, hares could only be with rare wide-angle, but these hares are predictable, and on PZZ - in general, sometimes they defy logic. Spontaneous spots are static, single, anywhere, of any color and nebula, regardless of the lens.

        • Vitaly N

          Is a protective filter installed on the matrix? Hares can be from anything when the sun shines on the lens. It even reflects from the matrix onto the covered aperture and back onto the matrix. Well, the lenses themselves can also create them. There are no perfect glasses, as well as a perfect black coating.

        • Vitaly N

          Colored hares are unambiguous from lenses - anti-coating is not ideal and each layer prevents reflection of only one narrow wavelength of light. Coating each lens with dozens of layers of coating is very expensive. Often, just on different lenses, they use a different coating thickness, combining them throughout the lens. This is easily seen by the reflection of the light source on the lenses.

    • KalekseyG

      In the second photo, also a hare.

  • anonym

    But still, you can somehow remove this blooming?

    • Arkady Shapoval not allow flare / overexposure
      On the finished shot, only with the help of various restorative effects in the editors. But, by and large - nothing.

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