Marta

                                                DIFFERENT TYPES OF FILES:

When you take a picture with a digital camera you can chose to save the picture in different files. The different files are: JPEG, RAW and TIFF. The RAW file is the original picture and therefore the automatic saving of it. It contains minimally processed data from the image sensor of either a digital camera, image scanner or motion picture film scanner. The reason why it's called a RAW file is because they are not yet processed and therefore are not ready to be edited or print it. After the picture is taken, you have the choice to turn it into a TIFF or JPEG file to increase the its quality. Furthermore, if and when you convert the RAW file to JPEG, the picture can be easily saved and it is a faster, easier and more possible way of passing the picture around and be accepted by different types of computers. Instead, if you chose to save the picture as TIFF than the picture doesn't lose its quality, but it is a big file that require a lot of memory room.


                                                  SENSORS: 

The different types of sensors are CCD (Charge Coupled Device) and CMOS (Complementary Metal Oxide Semiconductor). The sensors capture the light that will eventually turn into a picture. In other words, once the picture is taken, the light that have been captured will be turned into electrical signals that will produce what we call a picture. The CCD's will pass the light through chips that will then process and become a picture. Similarly, the CMOS also captures the light and then create a picture. However, it is a more complex process where it uses a chip and transistors to process the light that will eventually develop into a picture. Although it is a more complex process, it is not the best. What I mean is that CMOS sensors are cheaper and the quality is not as good and professional as it is in the CCD sensors.



                                                         MY PICTURES:

I love taking pictures of flowers especially from close up. There is no filter nor flash, the sun is the only source of light used. I also love the contrasts between each colour, especially in the first picture. In it, you can clearly see the petals "in movement" and therefore you can see a bit of texture.