Woland65

Woland65

Lives in United States United States
Joined on Sep 8, 2010

Woland65's recent activity

  • No, because you will then be taking a different picture. However, if you use a lens with the same aperture diameter but adjust the focal length so you are taking the same picture, then the ISO ...
  • Agree
  • So can any large improvements be made for improving noise in low light? (Low light as in when you can't keep the camera at base ISO.) Or should we expect no large improvements in this area?
  • I also think Great Bustards summary is better than mine at the beginning of this thread. This is a really good summary: "All else equal, the noise advantage of larger sensor systems comes from the ...
  • it would take me hours to answer all of that...
  • It wouldn't. All the area is used for detecting photons, regardless of the number of photocells.
  • Yes, nothing really wrong with that reasoning. But if you ever start wondering _why_ this happens, remember that it is because you gave the smaller sensor less total light by using a smaller ...
  • same aperture _diameter_, I keep forgetting to write that.
  • I chose to define "low light" as when you can no longer fully expose the sensor by increasing shutter time. This is the same as defining "low light" as to when you have to increase ISO over base ISO. ...
  • Yes, but if you divide that large photo site into fouler smaller, take the picture, and then average (downsize) over four pixels you get the same result. So more photo sites is not necessarily bad ...
  • A sensor does not collect more photons because it has more photocells.
  • Not sure what you mean. Sensor size is just that, the size of the sensor. Sensor size is determined in length units, like millimeters or inches. (Or the weird 1/inch unit.)
  • Replied in Upgrade to fx?
    The only notable improvement that I can see that you would get is slightly shallower DOF, when you want that.
  • Agree, I should take the time to write "aperture diameter" instead of just aperture.
  • Not if you are using the same size aperture for both sensors. In that case the total amount of light on both sensors will be the same (and the intensity of light hitting the smaller sensor will be ...
  • This could make a big difference for shadow noise when the scene is well lit. What you are saying is basically that you could give shadow pixels a longer shutter time and thus collect more light, ...
  • Two options for doing what? My only point with the thread was to explain when different sensor sizes matter and don't matter, and why.
  • (Takes time to write these answers and I am busy with the family today.) In the article he then goes on to compare different size sensors at the same ISOs. This means that a lens with a different ...
  • Sorry, you are right. The article is still confused. There are two scenarios to consider: I) Plenty of light. In this case the bottleneck for keeping noise down is how much light the sensor can ...
  • It is right. When comparing cameras you always use the same AOV on both. (By the way, luminance is per area per solid angle, not just per area. If you want to know how much light your lens is ...
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