5 ms·

So, wait. The camera can fix dead pixels but only does so once a month? Dead pixels are dead easy to detect by the sensor, why don’t they do it immediately? Way

• yakubin 3y ago
  Every photo taken shortens the life of a sensor.
  • riversflow 3y ago
    To add to this, with those particular cameras(it’s the frame I shoot on), you’re encouraged by the form factor and ergonomics to turn them off when idle to get the most out of the smallish battery, they boot in like 1s. A battery is good for ~350 shutter pulls, I don’t want to use one of those every time I think about taking a picture. Also, a dead pixel is not a ruined photo, it’s a minor inconvenience in editing at worst. And every photo I take on a FF is getting edited, the gorgeous RAW output is what I’m there for.
    • lakpan 3y ago
      > minor inconvenience Do you have software that automatically fixes this issue in all the pictures at once? Because as a non-professional I can only think of a very manual approach. On my old phone, dust made its way into one of the cameras and now all of those photos are forever ruined (or until I find a way to somewhat automate this fixing)
      • sudosysgen 3y ago
        Any real photo editor will allow you to batch a patch heal operations. Lightroom, Photoshop, GIMP, Darktable, etc... all support this.
  • sudosysgen 3y ago
    That's not really true, it's only a problem for the shutter. The sensor doesn't really break.
    • yakubin 3y ago
      You’re right. I misremembered. The term is “shutter life”. Same result though.
      • wtallis 3y ago
        Not the same result: we're talking about taking a picture without opening the shutter.
        • yakubin 3y ago
          Given that shutter sounds are produced, I'd guess the shutter is opened[1]: > During this time, shutter sounds will be produced. [1]: <https://helpguide.sony.net/ilc/2010/v1/en/contents/TP0003229311.html https://helpguide.sony.net/ilc/2010/v1/en/contents/TP0003229...>
          • dghlsakjg 3y ago
            The shutter is actually being closed. On mirrorless cameras the shutter is by default open so that viewfinder framing can be accomplished, then it quickly closes, opens for the photo, and ends closed before opening again to act as a viewfinder. In the case of a reference photo it is closing, not opening, taking a read of the sensor, then opening again.
      • gruez 3y ago
        Do mirrorless cameras even have physical shutters? Or is it all digital?
        • yakubin 3y ago
          Most do. Some, like Nikon Z8 and Z9, don't.
  • deleted 3y ago
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  • dghlsakjg 3y ago
    Yeah, but that’s like saying your mechanic shouldn’t take test drives because every mile driven shortens the life of the car. The shutter, which is replaceable, is normally rated, for 200k-1mm actuations MTBF. Even taking a reference photo every day won’t truly impact shutter life. Anecdotally: I have a 20 year old Canon 1D that is 50% over it’s rated shutter life, and that camera was used for photojournalism (used HARD) for most of its life.
    • deleted 3y ago
      [deleted]
    • caseyohara 3y ago
      Most (all?) mirrorless cameras these days have an electronic shutter too, so it's not like it would put any extra miles on the mechanical shutter.
      • dghlsakjg 3y ago
        You need to have perfect dark to take the reference image, so even on the mirrorless ones you end up having to close the mechanical shutter to get it done.
• sudosysgen 3y ago
  Sometime dead pixels are not a fully on-off affair, so taking a dark frame is really needed, and you don't want to be doing that too often because then the camera is not usable then. It sucks, but it is what it is, and it's not too difficult to batch remove dead pixels - if you even notice them.