Back in July and August, Lou and I ventured off to Warren Gorge, a wildlife centre in the middle of Chafford Hundred, to practise using our new kit - Lou with her Canon 7D and me with the Bigma.
One thing came quickly to light: the Bigma requires muscles and a steady hand.
The model I bought was the one without OS, optical stabilisation (the OS model hadn't been released at the time and the non-OS version was about 2/3rds the price). With a full-frame sensor on the 5D Mk II, I became aware that I needed to use the rule of "shoot faster than 1 over your focal length", i.e. 1/500th of a second at 500mm (or faster), 1/300th or faster at 300mm, and so on. I knew that I wasn't going to take a tripod to Borneo so shooting hand-held was going to be the only option.
During our first day at the Borneo Rainforest Lodge in the Danum Valley, we encountered some long- and pigmy-tailed macaque monkeys high in the trees. Although the sun was bright, most of the light was obscured by the trees, so shooting at high speed was hampered, even wide open, which is f/6.3 at 500mm on the Bigma, unless you bump up the ISO. I didn't want to have to shoot at high ISOs, because Canon haven't managed to develop low noise at high ISOs as Nikon have. Reluctantly, I was shooting at ISO 6400, meaning the images would need cleaning up quite a bit in Photoshop/Lightroom back home.
Here's a crop of the original version of one of the macaque pictures:
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| Photo 1: Macaques fighting in the trees, cropped. (1/500th @ f/6.3, ISO 6400.) |
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| Photo 2: Cleaned-up version of Photo 1. |
Later on in the holiday, I decided to make use of a function I've hardly used before on a camera: Tv, Time Value, or, in English, shutter priority. Usually, I use Av (Aperture Value/priority) so that I can control depth of field as a priority, but with a long lens, I found that the importance was on selecting a fast enough shutter speed to avoid lens blur.
With the camera set to Tv, I chose 1/500th at first, then 1/640th later on (and even faster when on the boat cruise around the Kinabatangan River - up to a 1/1000th).
I also set the ISO to Auto, again, something I had never done before. I got the idea from a lady at the Borneo Rainforest Lodge who had a Canon but had set it to Custom Auto, which pretty much works as a point-and-shoot (I've always thought this was a pointless setting, but nevermind). Thankfully, when set to automatic ISO, the 5D2 only goes as high as 3200. Anything higher than that - it goes up to 25600 - and the noise is too pronounced, as I mentioned above.
Finally, I switched between Auto and Manual Focus, as I found it to need a slight tweak here and there.
Photostream
Here are the photos so far: Borneo Days 1 & 2.
Summary
The Bigma is a beast! Apart from being 1.65kg in weight (58.2oz, for those in old money), it's also quite a tricky lens to get working nicely with the 5D2. Of course, I'd love a Canon 100-400mm with Image Stabilisation, but at £1,270, it's a tad pricey for now.
The secret to using the Bigma was to set the camera to Tv and choose auto ISO. I made sure that Custom Function 3 (C3 on the dial) was set up for the Bigma for low light conditions and Tv/Av were used when light wasn't an issue.

