Serene Life

by garik

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When you say "light blue" is lighter than "dark blue" you may be mixing two concepts together without knowing it. In one sense, the colors light blue and dark blue are two different colors - that is, they are a different proportion of the three primary colors. You could also be talking about different brightness levels within the same proportion of color ...


The unit of measure for brightness is the lumen. I know it is used to measure the amount of light emmited from a source. But in your question, I think you are talking about the reflection of light off a source. I may be wrong but I think it is also measured in lumens. The presence of black (in your example of dark vs light blue) shows lower lumen units ...


You need to shoot at either sunrise or set (sunset is generally warmer in tone), when the sun is very low in the sky. Shoot with the sun behind the model (taking care not to look directly at it if possible). As you are shooting into the sun, you need some light source to light the front of your model: this could either be a diffused flash or a reflector. As ...


It is not. What you are referring to is sensitivity to light. That is the ISO sensitivity is for and while there is a standard that describes it, digital sensors do not match exactly the posted sensitivity. A site like DxOMark actually measures ISO equivalence as part of its sensor benchmarks and you can commonly see a difference of ±1/3 EVs. The other ...


Theoretically both images should be the same brightness, even though the NEX sensor is larger, it stills receives same amount of light per unit area both lenses were set to f/3.5. The difference in brightness is due to different processing, there's nothing in the ISO standard that guarantee the same digital brightness values given the same exposure and ISO ...


There's a bit of post production going on in that image that is probably clouding things somewhat. If you look at the area at the top of the image it's clearly been blown out (overexposed) and then brought back from pure white to a dirty grey pink colour. This says to me two things - the contrast of the image has been lowered so that the blacks and whites ...


Looking at an eBay auction description, your Kako 720sd specs out with a guide number of 28-40m (I'm assuming that's across the zoom range of 28-85mm), so chances are that this is a pretty decently-powered speedlight (e.g., in the neighborhood of 30m when zoomed to 35mm), in the range of most of the hotshoe flashes you're going to find. Going to a new ...

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