10.5 mm refers to the focal length of the lens. f2.8 refers to the lens aperture.
ED indicates the presence of at least one Extra-low Dispersion glass element in the lens with the purpose of minimizing the chromatic aberration for a better colour rendition. If I correctly argued the contest you are referring to (a Nikon DX Format digital SLR camera)... this focal length corresponds to a fish eye lens with a 180° angle of view and
G indicates that this is a G-type Nikkor lens, designed with no aperture rings. Info taken from a Nikon press release.
Olympus SZ is a digital point and shoot camera, it is not a DSLR camera.
The easiest way to determine whether a camera is DSLR (or SLR) or not is by seeing if the lenses are detachable. If you can switch between different camera lenses, the camera is definitely either a DSLR or a SLR.
You can purchase a DSLR camera from Amazon, eBay, or other online retailers. Alternatively, you can visit an electronics shop in person to purchase a DSLR camera. Costco is one place that offers all products relatively cheaply.
It is.
There is many different stores online in which you can purchase this type of camera. You can buy a Pentax DSLR camera in multiple online stores. One of which is Currys.
No. A DSLR camera has a mirror that flips during the picture taking sequence. The Nikon L340 is a digital camera but does not have a mirror inside.
Lens
It is a DSLR. Right short answer. More exactly, Canon and Nikon are the best professional camera brands.
The photo quality can be the same, but with a mirrorless camera such as a Rangefinder, what is seen in the viewfinder will be slightly offset from the final result. A DSLR's viewfinder shows what is in the lense.
Canon DSLR lenses are designed to be used only on Canon brand cameras. The actual camera models would depend on which DSLR lens model is being referenced.
If price is your main concern, a professional DSLR camera can be found on amazon's website. If you are more comfortable shopping in the retail stores, I know Target has a great selection of DSLR cameras for a reasonable price.
He uses a Canon EOS 7D DSLR camera.