Widest range of digital cameras in South Africa

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  ComX Computers - since 2002 • home » computer hardware » digital cameras Thu 21 Oct, 2021View enquiry cart
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Tips and hints on taking pictures with your digital camera

How to select the right resolution and compression

Resolution is the measurement of an image in pixels. Since the maximum available resolution of an image is increasing, digital cameras use a process known as "compression" to reduce the size of the image to a manageable size before it is stored. While this increases the amount of photos you can store on each memory card, there is a trade off in quality.

Recommended settings

Low or medium resolution with normal or high compression

Printing people or portraits
High resolutions with low compressions (Fine / super fine)

Printing buildings and scenery
High resolution with normal compression

  • Low Resolution (800 x 600 pixels), Medium Resolution (800x600-1280x1024 pixels), High Resolution (Above 1280 x 1024 pixels)
  • Compression mode yields progressively higher image quality as one switches from "Normal" and "Fine" to the Superfine Mode.

What is the storage capacity of the digital camera?

Digital Cameras store images in removable storage media such as compact flash card. The storage capacity depends on the memory space of the compact flash card.

The number of images a storage media can keep varies with the CCD size in a digital camera. It also depends on the resolution and the compression of the picture.

The tables below give you a rough guide of the storage capacity of a digital camera.

A 32Mb Compact Flash card using a Canon camera

Resolution/Compression mode

No. of images (approx.)



Large/Super Fine






Middle 1/Super Fine


Middle 1/Normal


Middle 2/Super Fine


Middle 2/Normal


Small/Super Fine




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Lens Care

Dirt, dust and fingerprints impact the performance of your lens. And believe it or not, there is a right way and a wrong way to clean a lens. Do it right and you'll maintain peak optical performance. Do it wrong and you could scratch an expensive piece of photographic equipment.

For best performance, use only the manufacturer's Lens Cleaning Kit which contains cleaning solution, lens tissue and blower brush.

Step 1

Carefully blow off any dust or dirt, using a blower brush or compressed air.

Step 2

Place a drop of lens cleaning fluid on a clean piece of lens cleaning tissue, or blow gently on the lens so that moisture condenses on its surface.

Step 3

Gently wipe the lens surface from the edges toward the center of the lens, with a lifting rather than rubbing action. A micro-fiber cleaning cloth is a good alternative to lens tissue, and requires no lens cleaning fluid.

Lens Protection

Consider using a Skylight or UV filter as full-time protection of your lens, shooting your photos through it and removing it only when you're using another filter for special effect. And of course, don't forget to use your front and rear lens caps!

Lens Storage

Your lenses are precision instruments just like your camera is. Protect them from shock, impacts and dust by using an appropriate lens case. And store them in cool, dry areas whenever possible.

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