Photo - Tutorials
Lessons, tips, tricks about photography, in particular digital photography.
- Written by: Giuseppe Covino
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Always wondered what are color spaces, ICC profiles, gamma and all about color management? This tutorial is for you: you will learn all important concepts about the theory of colors and you will be ready to understand how to use your monitor at its best.
Index of sections:
- Color formats and chroma subsampling
- Color Spaces with white point and gamma
- ICC Profiles with rendering intents
- Summary
Let's start.
- Written by: Giuseppe Covino
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Using a tripod is something not very common, but there are situations where without a tripod it it is impossible to get a great shot, tipically:
- when shooting with a long telephoto (let's say from 400 mm on), especially if it is windy;
- when taking long exposures, after sunset or in the night for star shooting or to make special effects like water flow/waves;
- when shooting remotely, for example to catch animals passing;
- when taking multiple shots with exact same framing, like for timelapse.
- Written by: Giuseppe Covino
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Stacking is a useful and common feature in most of advanced photo catalog/archiving software and consists in grouping multiple photos showing just one of them (the one that is put on top of the stack).
It is useful when you have multiple shots of the same subject and want to compact the display.
Each software have its own way of handling stacking. This article describes in detail how Adobe Lightroom handles stacks, that is not so intuitive (you'll see that depending on the function, the stack can be treated in a way or in another).
- Written by: Giuseppe Covino
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"How to focus properly?", "What does DOF mean?", "Is auto-focus precise?", "What does back-focus and front-focus mean"?
Focusing is not as easy as it could seem, but it's one of the most important technique in photography, since a dark or too bright photo can be corrected via software, while an out of focus photo very hardly if not at all.
This lesson presents the basic principles of focus that are useful to be known.
- Written by: Giuseppe Covino
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Today I'm going to talk about hot/dead pixels, those annoying pixels that show up typically on long exposures (starting from around 1 second), one the unwanted effect of the "digital noise" and sensor aging for long exposures and high ISO. You can see below in the image that the sky is not a uniform color and it is grainy, that is the effect of the digital noise.
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