Even if you already have your personal Canon DSLR, or are thinking of getting a newer better model or even a secondary camera, Canon offers several DSLR camera models which contain a nice set of feature options as well as a type of solution for a first and second shot requirement. However Canon has a tested and true digital imaging tech, that will make certain that you reach constant production value, even if your are a personal photographer with only one camera to your name or a professional studio, that has several DSLRs for specific resolution types.
Over time, Canon was and is the leader in digital imaging tech so you can always be certain that you will receive a high-end quality product image that is available with all the great options that come from Canon DSLRs.
No matter the camera you end up selecting, several things to think about when choosing between cameras are:
Photo resolution. How large or small are the photos that you need to make, and at what resolution? Will a full-framed camera suit your needs, or is their feature that is necessary? Is a less expensive model of DSLR good enough that you will get the photos you require, so that the cost of professional lenses is covered?
Lenses and their qualities. Which set of lenses are absolute must haves, and which lenses can you wait for a while before you buy them? Is a quick wide aperture lens one that can keep the opening size at every zoom level? Will you have a reason to get a close photo and a dedicated macro lens, or are you looking for something that will shoot at a distance? Is your best choice a large aperture lens, or a small aperture, with very small depth of field portrait lenses?
Exposure. Which cameras options, do you have to have for your job? An outside flash may be worth thinking about getting, possibly 2 flashes if you often take dim shoots in order to maximize the shot option potential, or maybe you require a no flash image with very low noise ration but high end ISO abilities with a large aperture lens?
Speeds. If you are capturing a sport or any sort of high speed capture you will need to think about a quick lens, as well as a combo lens like the EOS-1D Mark III that has a quick fps capability and a f/2.8 lens.
Burst rate-buffer. When you take several photos without pausing the camera will have a cap, it is called: burst rate. Images that remain in this buffer while they are saved to a portable media type in your camera. Cameras like the 1D Mark III is a burst rate of 30 RAW or 110 JPEG photos which is much bigger than several DSLRs, so if have the requirement to capture several photos in a short time period, this may be something to keep in consideration.
Main camera types. What is the type of camera and lens that is comfortable for you? Or is a light, and still high quality cameras like 5D, Maybe the EOS-1D cameras which are a lot heavier? Will the manner of altering features of the EOS-1D series be a good option for yourself, or would you better like the turning wheel for using a camera like the 40D?
Price. Of course, price is of something you must think about when choosing your equipment. What you should ask as well is where should you spend the money, would you like to spend it to buy a camera body type, a lens, a flash, studio equipment, or some digital darkroom stuff? You should also plan what you will need to work using immediately, and is what you will need to work with going to be different in a few months when your skills and interest changes. Also, you need to realize that there will be certain products that come out relevant to your unique wants and likes as well as learning what the impact of these will be on your savings and spending.
Throughout history, lens quality has been the base that every master photographer looks for when choosing their camera brand. Photographers have fought for a long time to decide if Canon or Nikon has the top lenses. At the end of the day you will need to choose on your own. From past lessons learned, including the use of several types of lens and camera from all sorts of manufacturers, the Canon lens provides constantly pristine optical quality, also the large amount of lens types available, will give you extensive creative freedom as a photographer.