[toni-a]

Well, JPG as 2 main drawbacks:
- Each RGB component of a pixel is stored as 8 bits (a color intensity can be represented on a scale from 0 to 255)
- It uses lossy compression (to save space, the image is compressed at the cost of lost information (artefacts such as approximations and tiling)
(- No camera meta data)

A RAW file usually uses 14 bits thus a color intensity can be represented on a scale from 0 to 16384.
The format is usually losless as well.

One could use jpeg images to produce HDR images. However, to mitigate the limitation of 8 bit representation (and compression artefacts), one would need more images to work with (and it would also depend on the quality of the software used of course).

of course RAW is superior, but does the software use the 14 bits or just it converts to 8 bits then uses the data, in that case no point using RAW and it leads to prolonged editing time