ShadowHillsPhoto wrote in post #18302556
Do you happen to have links to the comparisons vs the Canon? All I've seen so far is the comparison to the Nikon that I linked above, and the Sigma has looked really good based on that. I'd really like to read a direct comparison to the Canon though. I'm not in the market for a 500mm but I'd be happy to see the Sigma do really well and perhaps keep some pressure on Canon to keep their lenses priced competitively.
I was mistaken. I did not read a direct comparison review of Canon 500/4 II vs. Sigma 500/4. Upon going through all the old posts and web articles, I think I arrived at my conclusion based on the following data points:
1. New Sigma appears to be comparable to the Nikon 500/4 VR, which in turn is comparable to Canon equivalent. So, if Canon has an IQ advantage, it is probably small.
2. Sigma has an issue with best focus point varying with aperture based on the digital picture review This is a problem. Maybe if you are shooting wide open all the time, it's ok but if this shifts when stopped down, it's highly undesirablle.
3. It is heavier than the 500/4 II.
So, I concluded that the Canon is overall a better lens than the Sigma. Is it 3K better? Only the buyer can say, but my 500/4 has performed brilliantly for me, everything that I would expect a top-of-the-line white prime to do.