Digital Diversity

Canons 70-200 range are fairly well known for their high quality and being some of the best zoom lenses you can buy from Canons range. There are (at the time of writing) 5 versions of this lens available. 2 versions at F4 and 3 versions at f2.8:
Canon 70-200 F4
Canon 70-200 F4 IS
Canon 70-200 F2.8
Canon 70-200 F2.8 IS
Canon 70-200 F2.8 IS mkII

After using the canon 55-250 IS for some time I found it a great set of focal lengths for shooting nature and wildlife that I can get relatively close to. For this reason I have had my eye on getting one of the 70-200′s as a replacement. The problem with these lenses is price. They aren’t cheap. The most reasonably priced one by far is the Canon 70-200 f4 without IS (image stabilization). To get the version with IS costs almost double the price and that is something I cant afford to do at this point in my life. So this clearly led me to purchase the non IS version.

Canon 70-200 F4 L, size - 76x172mm, weight - 705g

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A while back I wrote an article about my first time going to the zoo with the intent to take decent pictures, rather than just on a day out with friends. That was back when I was using a superzoom bridge camera (Panasonic FZ28). I came away from that trip with some images I was very pleased with and was surprised at the decent quality shots such a camera allowed me to get over the likes of a cheaper compact like my Ixus 75.

I have been back to the zoo since then with my DSLR (Canon 500D) and thought it would be good to share my thoughts on what advantages I had this time round with a more advanced camera.
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Learning how to expose photos in anything but automating modes can start to get confusing. When I got my first digital camera (Ixus 75) I didn’t know much about cameras in general, let alone metering modes and correct exposure.

When I upgraded to a superzoom (panasonic fz28) I switched to aperture priority mode. My main reason for this was that I could choose the aperture and change the ISO and exposure compensation to alter my shutter speed. This served me well and a lot of people use this method. I pretty much stayed clear of manual mode as it just sounded to fiddly to be of any use.

Since I got my DSLR (Canon 500D) I have started to think about this more. The only problem I would get with aperture priority was inconsistent exposure. What I mean by this is that say I was photographing my dog. As he runs passed different colour backgrounds this will in turn effect the exposure settings and lead to an over / underexposed shot. This would in turn have effected the shutter speed and can cause unwanted blur. I would also have to use exposure compensation and sometimes I may forget to change it back which would ruin the next shot. Another problem I had was that the exposure lock button never seems to lock the exposure for very long and getting the exposure back to what is was can be a pain.

To escape these problems I needed to step into the realm of manual mode.

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