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: it's the EXIF?, It good for?, How is it used?, As I see it?. Technical

EXIF \u200b\u200bExchangeable Image File Format , this is a standardized file format that is built into all digital photos. There we can find the date it was taken, shutter speed, aperture, and finally, plenty of useful information about the photo.

can get this pair of links and learn a little more:

http://www.digital-photography-school.com/using-exif-data

http: / / es.wikipedia.org / wiki / Exchangeable_image_file_format

NOTE: the date of the photo is only correct if the clock and calendar with your camera are correct data.

This information is very useful in the learning process, because if, for example, took several pictures of the same landscape, with variations of different parameters of our camera, these changes will be reflected in the EXIF, so we can review on our computer and realize how it affects every change in the outcome.

To view the EXIF \u200b\u200bof your photos, you will need a suitable program in general either for photography, Photoshop and silmilares. In this case I will to show how it's done with Google's Picasa, as well as being an excellent program is free.

See here: http://carloscaminofoto.blogspot.com/2010/04/realmente-necesito-un-programa-para.html

Assume we have the following picture and want to know information, which is in the EXIF:

Click to enlarge.

Open the photo in Picasa or Picasa and we open the album where the photo, we right click on the photo and get the following:

Click to enlarge.

Once in this menu we click on Properties (properties) and EXIF \u200b\u200bphoto right would appear next to your screen:

Click to enlarge.

And if we move down the slide, we will see more information at the bottom:

Click to enlarge.

Within This information also find the make and model of camera you took the photo, lonfgitud focal color space, time and date and the outlet, and finally all the relevant information of the photo.

Hoping that this will be useful, I leave to the next post.

Football Lineman Cleats

I know that with Photoshop is a process for improving the sharpness of the photos, you know how?.

Yes, I know the procedure and is very simple.

descrbir Before this procedure, we must become aware that even though the lighting is perfect, the subject is appropriate, the composition is aesthetically correct, the colors are well balanced and the angle of the socket is to be, if the picture is not clear, we are not going to help anything.

The process for improving the sharpness is as follows:

1 .- Open the photo with Adobe Photoshop.

2 .- Go to menu Image => Mode => Lab color

This action will make a change in color space from RGB to Lab, the first colors are formed by the combination of three channels Red, Green and Blue, where each has 256 shades (8 bits), and their combination allows us to represent a total of 16,777,216 colors is say more than 16 million.

Each pixel is defined by three values, Red, Blue and Green between 0 and 255, to identify its color. There is also a model of enhanced color space called Adobe RGB (ARGB), which comes to play up to 50% of the colors represented in the space L * a * b.

RGB and complementary CMY

In the second case we also have three channels, but the colors are formed in a different way, since one of them (L) defines brightness, from white to black, the channel (a) defines the balance between red and green, and the channel (b) define the balance between blue and yellow. This color space more accurately respond to the number of colors perceived by the human eye.

Each pixel is defined by three values, one that defines the luminosity (L), other value between red and green (a) and the latter a value between blue and yellow (b).

Area CIE L * a * b

3 .- Go to the Channels palette and select channel "L", or Lightness, so we will act only the channel contains details of the image, not the color information.

4 .- Now we go to the Filters menu => = Sharpen> Unsharp Mask ...

5 .- We will present a dialog box where you must do the following:
General purpose: Amount = 85%, Radius = 1, Threshold = 4
For individuals: Amount = 150%, Radius = 1, Threshold = 10
For urban and landscape photography: Amount = 65%, Radius = 3, Threshold = 4
This data according to Master Scott Kelby

Yes, I know it says Radius = 1.1, but should read Radius = 1

6 .- Finally, we return our photo to your original color space, RGB and save. Presto, now our picture is sharper and sharper, which was our objective.

hope this procedure will serve. Until next post!