Am Thu, Jan 07, 2021 at 05:12:07PM +0000 schrieb antlists: > On 07/01/2021 02:22, Nikos Chantziaras wrote: > > On 04/01/2021 23:37, Frank Steinmetzger wrote: > > > However I noticed that the latter procuces larger files for the same > > > quality > > > setting. So currently, I first save with a very high setting from > > > Showfoto > > > and then recompress the whole directory in a one-line-loop using > > > imagemagick’s convert. > > > You lose some extra quality when doing this due to recompression. What > > you should do is save in a lossless format (like png or bmp) and then > > convert that to jpg.
But that would lose a lot of EXIF stuff in the process. I know that recompression reduces quality, that’s why I use a very high setting (98…100) for the intermediate file. > If you're doing that (which I recommend), I set my camera to "raw + jpeg", > and then dump the raw files to DVD. That way, it doesn't matter what happens > to the jpegs as you can always re-create them. I don’t really live the RAW way. They take up sooo much space and my camera’s OOC jpegs always look far nicer than anything I can produce with darktable/rawtherapee. Most of the time there are colour fringes and sometimes sensor patterns that I can’t get rid of. I already have a backlock of several 100, if not 1000 pictures. Working from RAW would take even more time. In some specific scenes I actually use RAW+Jpeg, mostly in scenes with a very high dyamic range. But as I said, the results are not very satisfactory. > If you've only got jpegs (why are you using a rubbish camera :-) I have an Olympus O-MD E-M5 MkII and a MkIII, that’s far from rubbish. ;-) But the OOC jpegs are so good that I don’t need a lot of post-processing. I tend to read manuals and set up my equipment to get the best result right away, rather than point+shoot and do the enhancements later. > then just dump the original jpegs to DVD - that's why what Google do is so > bad - they compress it to upload it from your Android phone, and then > delete the original! AND THAT'S THE DEFAULT !!! I do some light enhancements on my images (like local contrast, exposure correction, alignment), shrink them to – say, 6 MP – and only keep the result. With convert, this gives me about 500 kB to 2 MB files, depending on the scene and chosen quality from 70 to 90. For 95 % of cases, that’s enough. There are exceptions of course, such as portraits, or the odd animal picture captured in just the right moment. -- Gruß | Greetings | Qapla’ Please do not share anything from, with or about me on any social network. Rather idle around than do nothing at all.
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