In general these pictures are low resolution to make it work better over the web. If you want higher quality just send the picture number to email@example.com and you can get a better version.
We did a section of the JMT - roughly 95 miles from South Lake outside of Bishop to Reds Meadow outside of Mammoth. 7 nights, 8 days. Lots of PCT'ers and JMT'ers. A freeway! Nice weather and views (even with a fire near Mammoth).