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.

24May/113

Photography: how to use ISO values

canon-eos-20d

In today's article we talk about photography, and precisely on the value of the optimization ISO depending on exposure or aperture.

We begin by saying that the term ISO indicates the standard to which we are referring to indicate the sensitivity of the internal sensor of the digital cameras in relation to light. In other words, by setting a low ISO value we will have a little light-sensitive sensor and a photo darker, vice versa (with the same aperture and exposure times) with very high ISO values ​​we will have a more sensitive sensor and a dramatically clearer picture (with some grain of digital noise in most, but more about that later).

28Dec/100

Photography: techniques for the reduction of “Digital Noise”

noise

In today's tutorial we talk about photography. How many times has it happened to take pictures, affect them on the display of the camera and see them in good condition, then download them on the computer and realize the presence of the noise in the picture.

The digital noise present in the photo is the deterioration which can range from small disturbance barely visible, the disturbo "a puntini" very annoying to see as we shall see in the next image which shows how the quality of the image may change, changing the ISO.

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.

29Apr/103

10 filters for Gimp you should know

disorder

In this article we'll cover some of the the most popular effects (I use most) for a variety of graphic works. Clearly this is a non-exhaustive list, filter after filter but perhaps we can do something interesting.

This list of filters just wants to be a overview of what you can easily do with Gimp.