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Re: Tell me, Peng, what is the difference...
In reply to noirdesir,
6 months ago
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noirdesir wrote:
s_grins wrote:
noirdesir wrote:
s_grins wrote:
Great Bustard wrote:
Peng Bian wrote:
s_grins wrote:
What is your understanding of light gathering?
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I’m surprised how much Wikipedia contributes to the forum.
http://g1.img-dpreview.com/20AE148C45244CBE9FB1585EDA32B1C1.jpg
Not sure how to put it, I guess luminosity? Basically, with the two setups, assume one is exposed correctly to get a nicely lit image, the other will have the same.
...in exposure, if any, between f/2.8 1/200 ISO 100 and f/2.8 1/800 ISO 400, if any at all? If there is a difference, why is one preferable to the other?
Hint: there's a significant difference between exposure (the density of light falling on the sensor), the total amount of light that falls on the sensor, and the brightness at which the photo is displayed. When you understand the differences between these measures, then all will make sense.
This might help:
To Gear Bustard from Great Grins:
Two cameras side by side aimed at the same subject at the same time
Camera 1: FF sensor, 50/2.8 lens ISO=100 F=2.8 S=1/200
Camera 2: 43 sensor, 25/2.8 lens ISO=100 F=2.8 S=1/200.
Question: is one of the cameras underexposed?
Two cars driving at 200 km/h. Is one of the cars too fast?
Unless you define what you mean with 'underexposed', one cannot answer the question.
200 km/h might be too fast because of a speed limit, or it might be too fast because the tires of one car are only good for 190 km/h.
Change the tyres, buddy, and try again. And please do not confuse me "faster" car. I insist that both cars have identical speed 200 km/hour after you change tyres
Well, since you refuse to even hint at what you mean with 'underexposed', you keep asking a question that cannot be answered.
Well for those who does not know: I'll compare 2 shots side by side to find out whether one is darker than another
BTW " underexposed" is absolutely standard and widely excepted word between photographers.
Also be aware that conditions in the riddle I've offered to a Great Bustard are very mundane
--
I’m surprised how much Wikipedia contributes to the forum.
http://g1.img-dpreview.com/20AE148C45244CBE9FB1585EDA32B1C1.jpg
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