From Los Angeles one can take the 5, then the 132 which passes by Modesto, and then a bit of the 120 which will get one into the park.
Most people think Summer is the best time for photography in the park, but Spring, from late March to early June, I find is the best time to come to Yosemite National Park. During Summer it is beautiful too but too many people go to the park.
There are several ways to enter Yosemite Park, but I like driving close to the Merced River. This shot was taken on April 15, 2009 Focal length: 24 mm F/10 Exposure Time: 1/250 sec. Handheld