I am a retired Chief Engineer.I have been into Photography for over 40 years. I have enjoyed the changes from a 3 day turn around to get your photos developed to the instance action of todays digital cameras. I recall my first strong desire to have a digital slr, being a Canon 6 million mega pixel camera that sold for over $30,000, now you can get 3 times the size, with much better picture quality for under $1000.00. If only Ansel Adams could see the changes. I am truly blessed.