Sunset in Kruger

by MrFrench

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0

To create a sort of analogy, let's consider a final, perfectly exposed photograph to be 100 litres of collected water, our camera, is the rainforest, and our camera's sensor, is a bunch of small buckets. We're going to play god here so we can control the environment (our camera) manually, and try to collect the rain using our buckets. Now, we have several ...


1

Light is either directly coming from its source or is being reflected by some object into the opening of your lens. The aperture controls how big that opening of the lens is. The shutter speed determines how long that opening is open. More precisely: for how long light going through the lens can reach the sensor. ISO determines how much light will result ...


1

You need more light. Low light is tough, and most folks aren't restricting themselves to iso 100. Good exposure, stabilization, and using appropriate shutter speeds are required, and that may involve tripods and motion blur with moving subjects. Noise occurs when you underexpose as much as with higher ISO settings. If you use higher ISO settings but expose ...


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Notice that the girls face has hardly any shadows. This means that the light source, from the perspective of the subject, is large and diffuse. This can be achieved by a ring flash and shoot close to the subject or, alternatively, put a huge white box behind you. If you have lots of lights, then 4 strip lights above, left, bottom, right of subject can give ...


2

Image above does not give a good feel for original. There are many versions on web. Most are small and unattributed. Larger version here A small version from what claims to be the original source is seen here They have dozens of similarly rendered images of young girls. Home page TANNEKE PHOTOGRAPHY "artistieke & romantische kinderportretten door ...


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You could play with exposure and post-processing, but the most important step would be the lighting of the shot. I would think butterfly (clam shell) lighting to brighten the face, eliminate shadows and reduce texture on the face.


6

IntroBased on your questions, I get the impression that you miss one important point, and that is the difference between: light perception in the real world, light perception in the world as humans perceive it, light percetion as your camera's sensor records it, light perception as image formats and your computer perceives (or processes) it. The real ...


1

One stop is a factor 2 of light (-1 stop => half the light, +1 stop => twice the light). So a byte (8 bits) has a dynamic range of 8 stops. It's less than a good camera, which can have up to 13 or 14 stops of dynamic range. So how do we deal with this problem? It is impossible to put 13 bits of a raw file into the 8 bits of a jpeg file without losing some ...


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I assume the gray card is 18%. Then compared to a maximum reflectance of 100%, the linear stops are each half, or in steps of 100%, 50%, 25%, 12.5%, 6.25%, etc. So 18% would be around 2.5 stops down. But it will NOT look like that in your histogram, because all RGB data in camera histograms is gamma encoded, which is a different story. In a gamma ...


7

The first thing you must realize is that what you are seeing on your monitor is not the raw file. What you are seeing is an 8-bit demosaiced preview conversion of the raw file created by Photoshop based on the current settings. You may even be seeing the embedded jpeg preview in the raw file that was produced by the camera at the time you took the photo if ...


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You can use the guide number system (see How can I calculate the effect of non-TTL flash on exposure?), possibly in combination with your camera's meter or a separate incident flash meter. But if you have several lights, modifiers, and are trying different poses and positions, trial and error is probably actually easier and faster. As you practice, it'll ...


6

Rolling shutter looks like the most obvious answer but I'd say it is a red herring. With rolling shutter the cyclists would not be cut in half as they are, they would be bent or warped through their full length, all of which would be in the frame. As would other objects in the frame. The wheels would also show signs of extreme geometric distortion in the ...


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This is due to the "rolling shutter" effect. See this video for a somewhat nauseating example, or this description with great graphics. Basically, at this exposure setting, not all the image is scanned in one instant, but rather in stripes, so that the bicyclist was not in the frame for the whole duration (though the background, farther away, was visible ...



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