Royalty free means you are not required to pay a royalty each time you use an image. When images are offered royalty-free, this simply means that the purchaser pays a fee and can then use the image without paying additional royalties or licensing fees. This also means the purchaser doesn’t have to give attribution. This is the model used by paid stock photo sites. Generally, royalty free images are images that are available under a non-transferable, non-exclusive, perpetual, worldwide, multiple-use sub-license. More
Street Photography is the flow of photography, who prefer the subject (point of interest) in the public sphere (public places).
Public space in question is a street in broad terms, that means including all objects, the space around it, for example in cafes, malls, markets, parks, and so on. Point of interest (subject) which is in the public sphere can not be separated from the course, but other things that are often located in public spaces, such as events, objects (element), the weather, shadows, and so on. Street Photography is realized very differently and the art style is mostly a mixture of history and up-to-date elements. The goal of street photography is to capture scenes unaffected by the author of the work so as to show a natural story and subject. Story and subject are possibly the most important aspects of a good street shot. More
Know the number Shutter Count it is important for those who have a digital camera because by knowing how much Shutter Count from your camera then you will also know the age of your camera.
The shutter count is the number of pictures that a camera has already taken. Also known as actuations. The number is important with used cameras because the shutter blades are delicate mechanical parts, subject to wear & tear.  More
DSLR or SLR (Digital Single-lens Reflex Camera) technology is a combination of DSLR cameras or digital SLR cameras, this turns out to be made to replace film of photography camera. Camera SLR & DSLR cameras have features that are very advanced are:
Video recording with HD resolution and features contrast detection and auto-focus
Dedicated keys for both sensor ISO image, if necessary. More