Woland65

Woland65

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

Woland65's recent activity

  • 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 ...
  • Yes you would. You would also be taking a different picture since FOV changes. You would also be wasting a lot of light since the lens isn't made for a crop sensor.
  • I think the article is misleading for many because it is not comparing sensors using the same FOV, but other than that the article is straightforward. If you give different surfaces the same ...
  • It is only at base ISO that the sensor size is the limiting factor. At higher ISOs it is the aperture size that is the bottleneck for getting lower noise.
  • I would actually argue that it is hard to find an "easier" and clearer explanation of image quality than the total amount of captured light (without overexposing the sensor). However, it may not be ...
  • When I compare cameras I keep FOV the same. If you don't agree with that way of comparing noise between different cameras you will reach different conclusions. But I have never met anyone that ...
  • Agreed!
  • I am not sure what you are arguing, except that the same f-stop/shutter speed will give the same exposure. Which we both agree with. I am saying that as long as the lens is made for the sensor size ...
  • I totally agree that using f-stop is a more convenient measure than aperture size while taking pictures. This feels a bit off topic. I am not suggesting that lenses should be marked with aperture ...
  • I have never disagreed with that. That is why you should use FF lenses for FF cameras, and Q lenses for Q cameras. It matters in that you will have no benefit of a larger aperture if it is used to ...
  • Not really, no. :)
  • Comparing low light noise between sensor formats using aperture size instead of f-stop is even easier. The sensor size doesn't matter, only the aperture size. But yes, it totally depends on what ...
  • No, because the aperture of the fx lens is larger than the dx lens. An 24 mm f/4 fx lens has an aperture of 6 mm. To take the same picture on a dx camera you have to use a 16 mm lens. An f/4 16 mm ...
  • That is only true because the FF lens was not designed for the smaller sensor. The FF lens is wasting most of the collected light by projecting it outside the sensor. If you instead used a lens ...
  • In your example you are comparing the amount of light while taking two different images, in other words while using two different FOVs. The amount of light collected by a lens is (aperture size in ...
  • You are not imagining, but the reason is that you are most likely pairing your FF camera with lenses that have a larger aperture. An f/2.8 lens for FF has a much larger aperture than an f/2.8 lens ...
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