Ok, bear with me here. I have recently assessed my photo's. The main focus is on birds and landscapes so it is probably no surprise that about 65-70%% of my pics are at the extremes of my range (<30mm & >290mm). What do I do about it?
To get over 300mm I would really like the Sigma 150-500. It is the most I can spend and would need to sell my 70-300.
Less sure about a wider lens though. If I keep the 17-50 there is a gap up to 150mm. So the 15-85 has caught my eye to get a bit wider and a better range for a walk around lens. Alternatively I also have a recently acquired 50D & 18-55IS II. I could persevere with that lens as a walk around and sell the 17-50 for a 10-20/22.