It's pretty late, the moon was out so I decided to test out the Sigma 50-500mm. To get a bit further out, I threw it onto the Canon 7D and took advantage of the crop factor. These JPEG images have been resized and sharpened a bit in Lightroom. I'm still waiting to bring this out to catch some surf shots.
I was able to bring out the Canon 100-400mm F/4.5-5.6 on the Canon 7D and grabbed some really nice closeup shots of a turtle swimming in the bay - while I was on a cliff above. Yeah that's quite a bit of zoom, the lens is very sharp and very fast. Click any of these images to get a little bigger view of the image.
Also (below) here's more zoomed in and zoomed out comparisons shot from the Canon 7D + canon 100-400mm. The bottom image is not a crop. Taking advantage of the crop on the Canon 7D, that's how close you can get. All images were hand held and stayed pretty sharp with IS turned on.
Here's a quick gallery of images shot in a parking lot area just to give you an idea of the range this Canon 100-400mm F/4.5-5.6 has. Everything is hand held with IS on, from a Canon 5D Mark II. These are the JPEG's not the raw, no post processing except for resizing the image for web. I possibly even had my sharpness turned down for video mode on the profile, but you can see it's a pretty sharp lens zoomed in or zoomed out. You'll find related images when i'm zoomed out and zoomed into an object standing at the same spot. More video samples will follow soon..
This is project 'overkill'. This is the setup for those who might feel a bit inadequate with their camera body and need to throw on some type of intimidation factor. LOL. The Sigma looks huge on the Canon T2i and there's a battery pack on. Imagine what it would look like without. Someone wanted to see what this would look like, it's crazy. It's so forward heavy, I wouldn't be able to shoot with this thing if it were on the T2i. It does take some awesome photos with great range http://cheesycam.com/sigma-50-500mm-quick-test/
Update on the Sigma and Canon Lens
I screwed up big time talking about reviewing the Sigma 50-500mm vs. the Canon 100-400mm. The Sigma is in a different class, and I was confused by the price. They both sit around the $1600 dollar range. In fact the lens that I really should be comparing to the Canon 100-400mm is the Sigma 120-400mm F/4.5-5.6 that has the same aperture range and costs only $900 dollars. I'll see if I can return this Sigma 50-500mm and review the other. It won't be anytime soon though, so for now i'm not going to do Lens vs. Lens, i'll just review them seperately. I did get to shoot with the Canon 100-400mm on the 5D Mark II and is there such a thing as 'love at first click?'. I'm blown away by this lens on how fast and sharp it is. The colors and contrast that come from a lens with this range is amazing. The optical stabilization works awesome, I was able to do some handheld video at 400mm with decent results. Imagine if I had a Tripod. Next article post will be around the Canon 100-400mm F/4.5-5.6.