Gordon Laing wrote:
Now of course different people and different conditions mean you could handhold steadily at slower speeds, or indeed require faster ones. If it's cold and you're shivering, or being buffeted by wind, or if the camera and lens are very heavy and you're beginning to strain, then you will inevitably shake more and require a faster shutter speed...
At other times though, tough conditions and heavy equipment have meant I've needed quicker speeds.
It's all about knowing your gear and your own capabilities. The 1/ fl is just a guideline. Most people should easily achieve one stop better than that.
Good advice Gordon. I'll add a little more by mentioning breathing techniques. There are a few ways that can help steady the camera before taking an image, and then during an image. Those techniques will be down to personal preference. And to complicate things a little, heavy equipment for some can mean better handholding. I find I can handhold a 4kg set-up 2 stops longer than a D40 with kit lens in the same lighting conditions.