I have the Tamron 70-300, and overall, I love the lens. For its price, I don't think it can be beaten. However, it is a tad soft at 300mm, and it does exhibit purple fringing in some situations. So I was thinking of upgrading, but it doesn't look like there is any clear "next step." Basically, it looks like the next step up is a whopper -- e.g., to the 60-250 f/4, for $1200.
Since the Tamron retails for about $165, I was hoping that for, say, 4x the cost I could find something better. Instead, it looks like I have to jump to more than 7x the cost
.
What (if any) other options are there? It looks like the 60-250 would be a nice lens, and I'm sure I'd like the extra 10mm on the short end, but I would miss the 50mm on the long end too. I usually use my Tamron for soccer, air shows, etc., where the long end is really useful.
Any ideas are welcome!
Thanks,
Michael