Experimenting is the best way to get a perfect exposure, but for starters, get a tripod and try 10 sec. at F/8, ISO 100. Improvise from there, and you'll have great pictures.
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.
It depends on the shutter speed, if its a "point and shoot" camera the speed is determined by the auto settings of the camera. For a DSLR cameras you can control it manually, average DSLR cameras can shoot up to 1/8000th of a second.
ISO settings indicate the sensitivity of a DSLR camera. Most DSLRs offer 100 to 1600 ISO settings. The highest end cameras feature settings from 50 to 3200 or even 6400 ISO. The Kodak DCS digital camera is the highet ISO camera on the market with 6400 ISO.
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.
Filters aren't really good for fireworks. You want all the light you can get and all filters cut light down a little bit. Further, you can get sun spots on the image.
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.