Yes, I filter my lenses, and I'm looking for one for my 70-200mm f/2.8 IS II. Do you guys have any recommendations or favorites when it comes to UV filters? I've been looking at the B+W F-Pro filter.
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Well it is interesting if they move the 1D up to FF. The APS-H format seems to be a big seller for Canon. I find it hard to believe they would just trash it. Though, rebranding three established camera lines is a little strange too.
Hmm...I don`t understand what you are thinking about here. We are talking about sensor performance. JPEG is derived from the raw file. It does not matter how powerful computer and clever noise reduction software you have access to, you can`t eliminate read noise. Only the sensor can do that. Canon set a threshold with DIGIC 4. "The best we could achieve so far", according to the developer team. If you read the article the team leaders admit that more complex algorithms is needed to combat sensor noise ( read noise ) but that will lead to another problem, more processing power.
Sony has developed and implemented complex algorithms into their latest Exmor sensor. That is why they have lower read noise, which leads to better dynamic range and cleaner shadows.
I`m quite sure Canon can do this too. After all they are a technological giant. The question is if and when.
I'm less convinced that lenses retain their resale value. I'm considering swopping my existing EF70-200 f/2.8L for the new mark 2 IS version and have been only been offered a low Â£410.
The problem is probably due to the very lens I'm thinking of buying. When a better lens appears, however good they are the previous version (or in the case of the 70-200, versions) must be devalued.
My non IS f/2.8 version cost Â£936 in November 2005, so it's dropped 56% in that time. That's despite still being in excellent condition.
The number of failures like this are pretty low, I've had a dozen or more Canon DSLR's with no issue, and I have friends with many more that have never had it.
That is no consolation for a owner that gets the problem. Switches are by nature unreliable, they can create their own failures and oxidation, no need for external debris. However, switch technology has greatly improved over the past years, computer keyboards are a example. They used to have switch failures frequently, but now they are improved, even though the price has been driven way down. They just learned how to make them better.
Not quite as wide as you'd like, but Sigma makes a 20mm f/1.8 that would give you 32mm FF-equivalent and faster than f/2...