This is a question I was asked a while ago. I spoke with a lady that just recently received a new SLR camera (Single lens reflex) one that you can change your lenses and has many options.
Well she went on a holiday, took many photos and once she was home and looked at them on the computer screen she was a bit disappointed as what she thought she captured clearly was actually out of focus. Her subject, which generally was a family member, was in a hazy focus in most of her images. This can be a bit disheartening when your excited to be using a BIG camera for holiday photos.
So let’s look at this a bit more and why this can happen.