4 ms·

The mirror has to move out of the way and the aperture must close to the chosen value.

• franga2000 7y ago
  Any idea how mirrorless cameras compare in this regard?
  • ChrisMarshallNY 7y ago
    Mirrorless is a challenge. You need to have something like <50ms frame lag, generally. I know there's some studies out there about this. It's been a while since I've done this stuff, but there's an "uncanny valley" of lag that needs to be avoided. Also, you need to present an image that is useful to the photographer. For example, if you are applying vignette correction, that can be a processor-intensive step, and can be difficult to apply at 24 frames per second on a full HD image (the sensor may be returning considerably higher than that, but the camera back may just have a 1080p display). If you are doing things like image enhancement/CP (for example smart HDR, selective enhancement, or stochastic NR), then how will they be displayed? Do you show a grainy image in the preview, even though the final will look much better? What about color space conversion? The display is likely to have a limited gamut, but the image may be saved at full Adobe, and you want to have perceptual correction, as opposed to clipped. This is an exciting time to be looking at this stuff, but the challenges are real.