Compression rate?

So that for JPG compression as a choice you have so many values ​​between 1/2.7 to 1/12, is very unusual.

In image processing software, the adjustment of the JPG compression is usually in 1% to 100%.

In cameras, the selection is often normal/fine/superfine.

But you have to Quality level and Compression Ratio differ.

Interesting: In Table 2 corresponds to a Quality level 100 with Compression Ratio 2.7:1 – so the value of your setting option 1/2.7 !

It is strange that this is shown in your camera – which camera is it?

Otherwise:

How strong or weak the compression is set can be applied several arguments:

• Why set a low quality level if you have enough space on the memory card?
• But it is also about space requirements for backup/archiving/publication – eg limited storage capacity for cloud accounts or photo web pages.
• And finally, other factors sometimes influence the quality of an image more than the compression – eg picture noise.
• Then a higher JPG Quality Level only leads to the noise staying better 🙂