1. The DNG is uncompressed. It contains ALL the data off the sensor.
2. JPG = compressed = Loss of data. TIFF = compressed or uncompressed, depends on your settings for saving the TIFF. If compressed TIFF is selected it is usually a lossless compression that is used, meaning no data is lost.
3. The JPG or TIFF file you save will be as per answer 2. The DNG file will be unaltered, so no loss of data.
Regards
Chris
Originally posted by bull drinkwater the 645d converts raw photos to dng or pef in-camera.i have several editors that will open dng files but,none that open pef except the one that came with the camera.i also have a seperate converter that works with dng files. my questions.
#1 is the dng file uncompressed and contain all the data as it comes from the camera?
#2 if i use my dng converter to change it to jpeg or tiff ,are they compressed and do they lose data?
#3 if i open a dng file just look at it and then save it to tiff or jpeg, is it compressed and does it lose data.?
i hav asked this question before but received confusing answers.