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Lecture 11: Radiometry & Photometry (26)
NicholasDrian

It is not intuitive that the lighting conditions of sunset and bright sunlight are so many orders of magnitude apart

ryurtyn

Is this why pictures of sunsets are often less impressive than the sunsets in real life? Since the brightness of the sun itself is much brighter than the range of our screens, our devices can't really show the illuminance of what we are seeing out in the real world. What is being done in this field to make images represent these differences in brightness more accurately?

bernardmc8

I wonder how the type of graphics system we are designing is different depending on the average levels of illuminance we expect to see. Since our digital screens are unable to output a large amount of lux, I'm assuming that the relative differences between the sources of light is what matters most. As such, I could see scenes that only render very bright sunlight being rendered slightly different from scenes of just night, for example.

Crazy010517

It's truly amazing to learn that our eyes are able to see/adapt to this huge illuminance range. The brightest sunlight is 6 million times brighter than a full moon and 400,000,000x brighter than starlight!

ksaralle

after seeing this slides irradiance finally starts to make sense to me. i think it directly determines how a sensor (human eyes, devices etc.) perceives light in terms of how strong it looks. it is not just the intensity of the light source but the way it is perceived

seenumadhavan

It's really interesting how low the illuminance of residential lighting is compared to even an overcast day, when one would think they should be similar. Judging by the role light plays in regulating our circadian rhythm which is important for all aspects of our health, we should try to get outside as much as we can.

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