Mining is one of Canada’s wealth-generating resource industries. Industries like mining made this country great, and I am honoured to be allowed to photograph a mine in northern Ontario this weekend. So I am off to Timmins in the morning.

I trust that it will not be like this:

In fact where I am going, underground, it will be hot, humid and dirty.

So this is the one time I will put filters on my lenses – clear filters, also known as UV or Daylight filters, whose only task is to protect. I recommend that you own them – but normally leave them off.

In a sandstorm, rainstorm or a mine, however, putting them on might be a good idea. Easier to replace a $100 filter than a $2,000 lens.

Now I have to go dig out my filters. Pun intended.