Geek Talk

I found out that Tv 1/125 means shutter priority, with a shutter speed of 1/125 sec. Av F 5.0 means aperture priority, with a f-stop of 5.0.

Vincent Bockaert says :

In "Shutter Priority" mode, you can select the shutterspeed over the available range and have the camera calculate the best aperture to expose the image correctly. Shutter speed priority is often used to create special effects such as blurred water on a river/waterfall or to freeze action in action scenes as illustrated in the shutterspeed topic of this glossary.

In "Aperture Priority" mode, the camera allows you to select the aperture over the available range and have the camera calculate the best shutter speed to expose the image correctly. This is important if you want to control depth of field or for special effects. Note that because of their high focal length multiplier, a shallow depth of field is often very hard to achieve with digital compact cameras, even at the largest aperture.

----> I kind of get it, but not really.. =)