If you’re in the market for a 24-70 f/2.8 lens for your Canon camera, there are a few options available. In this video, Matthew Gore goes in-depth about the similarities and differences between Canon 24-70 f/2.8 L II and Sigma 24-70 f/2.8 ART. Both have a good reputation, and the price difference isn’t really big, which makes the decision not so easy to make. So, if you’re having second thoughts which of these to choose, this video could answer some of your questions and help you decide.
We’ve all come across a situation where we’ve had a filter on a lens that just wouldn’t come off. If you haven’t, you will one day. Switching environments, or just leaving your filter on there for too long can cause it to pretty much become embedded into the front lens element. At other times, cheap filters, or the wearing down of coatings on the metal lens ring or filter itself can lead to galvanic corrosion.
In a recent podcast at Tested, former Mythbuster Adam Savage recounts the story of how he removed a shattered filter. How did it become shattered? Well, Norm’s Canon 24-70mm f/2.8II lens fell to the ground along with his shiny new Canon 5D Mark IV after his hand got knocked walking into The Cave. After much panic to determine whether it was just the filter or the lens elements had cracked, the plan began to get it off. A task which turned out to be easier said than done.
I was shooting some images of the icebergs on the black sand beach by the Jökulsárlón Glacier Lagoon, Iceland with a rental EF 24-70mm F2.8L II. Iceland is notorious for being windy, and while I was shooting there was blowing winds carrying ocean spray and water splashes all over me and my camera + lens.
Unfortunately, it seemed that sea water got into the lens either from the autofocus switch, the “weather seal”, or the extended barrel when you zoom out. After a short while, the lens stopped autofocusing and I got errors about connecting to the camera.