Summer Seasonal
HDR: High dynamic range that refers to both dark and bright elements. It helps make make your pictures more dense and have more contrast in it. Photographers use it to bring out the brightness like in the sky or in a tree the green.
A raw file is a record of the data captured by the sensor. While there are many different ways of encoding this raw sensor data into a raw image file, in each case the file records the unprocessed sensor data.