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What they didn't have was fast lenses. So, you started with a rather small aperture and closed down from there. Closing down was no problem. An iris is a fairly simple mechanism.

I used to...

Not so! It's the ratio between the diameter of the lens and focal length, therefore providing a measure of the amount of light admitted. It increases in multiples of the square root of 2: 1, 1.4,...

I guess I don't understand this. Most SLRs can be operated on auto, and there are plenty of non-SLRs around, like Leicas, that give you all the control you could want. SLR just has to do with...

In photography F stops are considered fast or slow. For example a lens with a large aperture, like 1.4 is referred to as fast.

F stops have nothing to do with the number of lenses, unless you...

Like I said, shooting small photos, like those for Ebay is not really demanding, and this camera should be fine. Just make sure you use plenty of light angled away from the camera, so you don't get...

All true. The traditional reason for using a mild telephoto for portraints is the perspective. If you shoot a portrait at wide angle, the relative distances are exaggerated, and you would get a...

I think a more accurate way of stating it is that they affect the maximum size acceptable photo you can get. Even the simplest programs let you change the size of the displayed photo, so the...

That really is amazing. It's the equivalent of a 2000x zoom.

Amazing! The ad says:
"It would take a video wall of 10,000 television screens or 600 prints from a professional digital SLR camera to capture as much information as that contained in a single...

That's quite a camera. It's shooting a panoramic, large format: 6x17, and it has film equivalent speeds from 10 to 10,000 ASA. That ought to give some great razor photos. I can't wait until...

I have to agree with this. The megapixels only give you the maximum available resulution. The rest depends on the lens, focus and exposure. If you can get the maximum resolution out of your...