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Digital photography has in so many ways, revolutionised how we take and record photos. One way to look it it is just to step back into the late 1990s. At this point in time, I was using a Sony Mavica. This was certainly not a small camera. It was taller than my Minolta Dynax 7- and deeper apart from the hand grip.



So this digital camera retailed in the US for something like $US 700. In NZ it was retailing for anywhere between $NZ1500-$2000.

So, what did you get?
The camera recorded images on 1.44 MB floppy disks.
Today I use memory cards- that are a fraction of the size of a floppy disk- that have 8 GB of memory. These cards have a storage capacity of over 5,500 floppy disks. That's the change in storage power in the span of one decade.

Each floppy disk could record about 25 JEPG images that were 640 x 480 pixels.

Now an 8 GB memory card records over 1700 JPEG images that are 4592 x 3056 pixels.

The Mavica used a 1/4 inch CCD sensor. That meant the sensor's physical dimension was 3.3 x 2.4mm.
The APS-C CMOS sensor used in my a700 and Nex-5 has a physical dimension of 23.7 x 15.6mm.

What all these changes have meant in total, is that photography is now accessible to nearly everyone. Go to almost any function and a significant number of people will be using digital compact cameras. Photography is a hobby now enjoyed by the many more people.