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TheJoe.it Into the (open) source

7Nov/114

Photography: some basic principles

finale3

When we speak of "photography" not only talking about a vile mechanical process by which the light is captured by a sensor, turned in electrical pulses, salvata su una memory and made available to the vision. Of course we also talk about this, but especially of "composition", in a sense of "art".

For the success of a photo should be aware a few simple rules that if applied will give us the advantage of not having to transcend from the original photo in post production.

21Feb/115

Tutorial: the paradox photo (the “Droste effect”) with Gimp and MathMap

fine

Today's tutorial is a cross between photography, graphic and Mathematics. Photography because we start from a real photo, and a good photograph is the beginning of a good job, graphic because of the various tweaks that as we make any and Mathematics because the effect scomoderemo today follows strict mathematical rules, nothing is left to chance. For this tutorial we will use Gimp and its plugin MathMap.

17Nov/100

YoHDR: a site to create HDR photos

L'HDR sommando le tre foto

YoHDR is still in beta, but from what it looks like seems to promise very well. Born from the creators of VectorMagic (online software that allows the vectorization image grid) the site allows, after 'upload some photos the same landscape with different exposures, to download the photo HDR.

In practice, the HDR is nothing an average exposure photos.

15Sep/101

L’Orsa

bear

Today's article is not intended as a survey or, neither a review nor a guide. On a recent visit by the parties of Saturnia, in an area where countries are very distant between them and the few roads that connect them are poorly lit at night.

If this was first aired a "danger" for us that we were (the usual nonsense of the genus: "and if you download the car battery?", "and if we end up off the road?") it is then translated into a Failure to light pollution, which made clearly visible Milky Way and most of the stars that "home" usually I do not see.

20Aug/102

When you say the case…

rainbow

Maybe someone will remember article a few days ago their eating add a rainbow to a photo. Well, a few days later there was no need of manipulations. Congratulations the photographer.

The following two images. The second is undoubtedly better than the first.

Find its account Flickr qui.

4Aug/101

Tutorial: add a rainbow to a photo with Gimp

The end result

The other day the light in the sky was pretty weird, the weather was very variable: half an hour of rain with peaks and relapses, and also sprazi of calm here and the. You do not always happen the good fortune to find a time like this, but a few days ago I happened. In these weather conditions it is not uncommon to be able to take a picture blacks with clouds in the background and the foreground in light, the clouds permit.

Today we see how apply a rainbow ad a photo. Of course you can use any photo, but specifically it is more truthful a picture with the sun behind us, and the background of the picture itself clouded.

3Jul/100

Tutorial: stained effect / burned with Gimp

disturbed

The tutorial for today came a little 'by chance and a little' because I was trying another effect to apply to your photo. The final effect will be the staining of the picture (stains confused with burn marks) I think responding to reality, but let you judge users.

First open a photo you might pay at work. We'll turn it in a few easy steps.

12Jun/104

Tutorial: Perspective correction (the linee cadenti) with Gimp

Finished work

In this tutorial we deal with correct perspective a photo with Gimp. Often (especially in the narrow streets) having to take pictures of monuments or facades of tall buildings, having available a limited field for framing. It is clear that we will be closer to the monument over the photo will be "far" from axonometrically correct. The perspective correction is also called correction (or modification) the falling lines. This is because taking a picture up close to an architectural one gets the impression that the monument is falling backwards (architectural lines converge upwards.

What we will do today is "straighten" the lines of a facade, Gimp as well as we should have another couple of plugins: "MathMap" and "FX-Foundry".

28May/100

Tutorial: tool “Clones” the GIMP

miniature

Now let's see how the tool works "Clones" Gimp. Often we will ever need remove the elements from a photo taken which disturb the fluidity. This thinking an ad light pole, a bush, a chewed gum e appiccicata sul muro. Requirements can be many, but for this tutorial I thought I would show its use for remove objects from the background. The instrument "Clones" does nothing but copy a portion existing in the picture (usually a reason fairly uniform) and cover areas that we do not want in the picture.