Well, I’ve had the Canon 30D for seven months now, and in that time I’ve taken a few pictures. Well, a couple of thousand, some of which I’ve shared with the Losing it audience. And I’ve been very happy with it, too.
Of the two lenses I bought, I mostly walk around with the actually rather nice Canon EF-S 17-85mm f4-5.6 IS USM rather than the Sigma zoom, which only comes out of the bag occasionally. It’s a very nice general purpose lens, whose only significant limitation is that its maximum aperture of f/4 isn’t quite as wide as one might like. But good wide aperture lenses don’t come cheap…
However, Canon do make this little beastie. It’s the cheapest lens they make for their SLRs, and the cost is reflected in the build quality. Compared to the big and really quite heavy 17-85mm, it’s very small and light, and has a very plastic feel to it. Even the lens mount is made of plastic rather than metal as on the more expensive lens. And the focus ring is a very small thing indeed.
But, and it’s a big but, what we have here is a 50mm prime lens with a maximum aperture of f/1.8 for around £65. I read a lot of reviews before buying it, and the consensus seemed to be that it’s optically pretty damn good, and that so long as you’re not rough with your toys, the build quality isn’t really an issue. Canon do make more substantial wide aperture lenses at significantly higher prices, so if you need something more robust, you can ignore this lens.
Now I can see I’ve lost some of my readers already, so I’ll explain a few things in distinctly non-technical terms.
What’s that then? A prime lens is quite simply one with a fixed focal length, in this case 50mm. Unlike a zoom lens, if you want to get closer to something, you’re going to have to move yourself and your camera rather than turning the zoom ring. This might sound like it’s not a Good Thing, but optics are funny. To get a lens to perform well throughout its zoom range turns out to be tricky, and in general, a lens made for a fixed focal length will produce a better image.
OK, I’ll keep this simple. Those f numbers are a measure of how wide the hole is that lets light onto the camera’s sensor. The lower the number, the wider the hole. The wider the hole, the more light gets in, which means that you need to open the shutter for less time in the same lighting conditions. Also, a wider aperture, as the hole is more usually known, means you get a shallower depth of field.
Depth? What’s this about fields?
Depth of field is the proper name for describing how much of the image is in focus. A deep depth of field means that pretty much everything from very close to as far as you can see is sharp. A shallow depth of field means that the actual subject should be sharp, but closer and more distant objects will be blurry. This is often just what you want – it’s a common style for portraits, and can produce some really interesting images.
Anyway, understanding all that, I decided that my camera had been very good, and it was time I bought it a present. I shopped around a bit, and at the time, Amazon had the best price I could find, especially with the free delivery option. So I ordered it on Tuesday, and it was delivered to the office on Thursday while I was in London. I took it out for a walk on Friday, and had some fun, the results of which will appear once I’ve sorted through them.
So far, though, I’m quite impressed. It’ll never replace the 17-85mm as my main walking around lens, but I do plan to make more use of it. It was interesting to have to take a different approach to my photography – having to move closer to something (or further away) to frame the image I wanted was quite different from my usual approach. OK, I usually move around, but not that much. Not a bad thing at all, and it definitely encourages me to think more about what I’m trying to do, which might just improve my photography. Which would be a Good Thing. It was also fun playing with that wide aperture, stopping it down a bit from time to time, but mostly leaving it wide open.
 Hint: click on Gallery in the heading
 Prehistoric link removed
 More photographical readers may wish to look away, or laugh…
 Hi Sam
 Only way I’ll understand it