If you 're planning to head to Yosemite you should check current road conditions by calling 209-372-0200. The best information about the status of the fire, including maps and photos, seems to be at the Incident Information System web site.
The photograph above was made last year during the Telegraph fire as smoke drifted up to Yosemite from Mariposa. The trees you see were actually burned in 1990 during the A-Rock fire. This area burned again last week when the Big Meadow fire got out of control; I guess enough brush had grown since 1990 to fuel the new fire.
I posted this photo to show that despite the smoke, there are still good photographs to be made in Yosemite. Any unusual conditions can provide wonderful opportunities. Here's another example on The Ansel Adams Gallery's blog.