According to the free encyclopedia-Wikipedia, A digital single-lens reflex camera (digital SLR or DSLR) is a digital camera that uses a mechanical mirror system and pentaprism to direct light from the lens to an optical viewfinder on the back of the camera.

In the beginning, digital single-lens reflex camera was worshipped mainly by professional still photographers. With the development of storage media, many amateur photographers show love and interest in Digital Single-lens Reflex Camera for it saves punching costs and shows up outstanding features.

While it is known to all that every coin has two sides, Digital Single-lens Reflex Camera is no exception.

Firstly, let's take an in-depth look at this Digital Single-lens Camera's outstanding advantages. It is those highlights that make DSLR camera become the foreground of digital SLR enthusiasts' attention.

A. Fast focusing and shooting

The most significant performance advantage of a DSLR is in terms of speed. Compared to fixed-lens cameras, a DSLR focuses faster and shoots faster for longer.

It is known to all that focusing speed is important when capturing a moving subject. The faster a digital camera can focus, the faster it will take a picture. Not only do DSLRs shoot faster but they can take more shots in a single burst at a constant speed. This increases the chance of capturing a decisive moment.

Why are SLRs faster than some compact cameras? It's electronics vs. mechanics. A device called a shutter sits in front of the digital SLR sensor, blocking it from light. When you take a photo, the shutter (made up of two curtains) opens and closes. There's never a delay when you want to capture that photo of a lifetime. While in compact digital cameras which owns no shutter, the sensor is electronically activated every time you take a photo.

B. Interchangeable Lens guarantee flexibility and high image quality

Today's digital SLR cameras all have interchangeable lenses to meet the need of different shooting environments and finally ensures high quality photo. This feature provides great flexibility and reassurance.

If you want to take landscape photos, you attach a wide-angle lens; photograph bugs and flowers, use a macro lens; and a telephoto lens for your labrador which can snap shots even when you are halfway across a field.

One camera, tons of lenses. And Digital Single-lens Reflex Camera is also able to take high quality images in low-light environment.

Every digital camera can take a photo when there's not a lot of light - just turn on the flash; while digital SLR cameras can do it without the flash. This is due to a feature called ISO which makes the digital sensor more sensitive to light but produces very little noise.

If you really enjoy taking photos when there's not a lot of light, the image quality of a digital SLR will exceed a wholesale compact digital camera any day of the week.

C. Unique reflex viewfinder allows accurate preview of depth of field

The reflex viewfinder is truly a property unique to DSLR cameras. The advantage of an optical viewfinder is that it alleviates eye-strain and that it constantly shows (except during the time for the sensor to be exposed) the exact image that will be exposed because its light is routed directly from the lens itself. There is no time lag in the image; it is always correct as it is being "updated" at the speed of light. This is important for action and/or sports photography, or any other situation where the subject or the camera is moving too quickly. And DSLRs are parallax-free; that is to say, it never provides an off-axis view.

Secondly, there are still other disadvantages which drive away ordinary digital camera wholesalers or digital camera users.

A. Relatively higher price

In spite that digital SLR prices have come down month by month, they are still significantly more expensive than their compact cousins-ordinary wholesale digital camera.

For example, an inexpensive digital SLR camera starts around $450 without a lens. Then you get to tack on an additional $100 for a kit lens or $500 for a high-quality zoom. While if you buy a compact digital camera from a

electronics wholesaler like Chinazrh which features high quality wholesale digital cameras, you will enjoy perfect-performance digital cameras with competitively lower wholesale price.

B. Sensor dust

It is simply dust that enters into a digital SLR while the lens is being changed. Most recent DSLRs incorporate a mechanism designed to shake-off sensor dust. This, of course, does reduce the problem but does not eliminate it.

Also, DSLR cameras have a much louder shutter sound than fixed-lens digital cameras, this can be disruptive in quiet environments or when discretion is required.

On the whole, the choice is yours. If you have been saving you pennies for months and admire the merits of DSLR, then purchase one without any hesitation. While if you are not professional photographer and have to care about budget, then it is better for you to choose a high quality digital camera especially from wholesale digital camera supplier like Chinazrh.