Monday, April 08, 2013

A to Z Challenge - G

Have you ever taken a digital picture on your computer and used a software like Photoshop to make the picture larger? Or cropped out a portion of a photo and then tried to increase the size to show more detail?

Likely what happened was that, as the photo increased, the photograph got grainier.  Grain, or noise, as its called in photography is caused because the pixels from a digital image sensor are set in straight lines rather than randomly. As the picture is increased in size, the pixels become bigger and more noticeable to the eye. Generally speaking, graininess is not a good trait in photos. So you want to take your picture with as many megapixels and with the best settings possible to ensure the best quality picture during post-editing.

Graininess can also be increased in a photo when ISO is increased. Come back on Wednesday to learn more about ISO!

Practice  makes perfect...


Melanie Schulz said...

So that's where the fuzzys come from!

Anonymous said...

I usually go for grain if I am doing a black and white, high contrast thing. Otherwise, yea too messy!

Shannon... said...

The cool think about photography is that you learn the rules so that you can break them! LOL, so yes, often photographers want graininess intentionally. But most point and shooters don't like it.

Connie Gruning said...

Photography is one of my favorite hobbies! I can't wait to read about the rest of your A to Z's
A to Z buddy
Peanut Butter and Whine

Jessica Peterson said...

This is such a good theme for those wanting to learn more about photography!!

Have fun with a-z.