From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id 1C2A61382C5 for ; Mon, 11 Jan 2021 19:31:52 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 423AEE09EA; Mon, 11 Jan 2021 19:31:46 +0000 (UTC) Received: from mout.gmx.net (mout.gmx.net [212.227.15.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id A1D59E09DB for ; Mon, 11 Jan 2021 19:31:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1610393494; bh=OHM107syGjUJ0RF04xmqCFp+ifZj9gYT0qk3EdLD30M=; h=X-UI-Sender-Class:Date:From:To:Subject:References:In-Reply-To; b=HGq2sE0FHJoM9r2++z4MRYDIdKupqd8QrMt2jMgxwJodeVNuQKuggrJ6LSnO1C/xj 5+YfooXtakRHyPiJ8sqOd6JUYG2VjYj4YipXrNPwdG5sFkr5CZ34lTVKCJ6NaM7pTU OTRbb7xf37B21zI2Py1SiwWLjAZ2wAKTiI4vwgko= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from kern ([92.117.59.159]) by mail.gmx.com (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MiJZE-1kKls33w3C-00fQBX for ; Mon, 11 Jan 2021 20:26:30 +0100 Date: Mon, 11 Jan 2021 20:26:26 +0100 From: Frank Steinmetzger To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Re: Your opinion on jpeg encoders, please Message-ID: Mail-Followup-To: gentoo-user@lists.gentoo.org References: <93bee44a-f976-194a-7c24-f5c7daf95c22@youngman.org.uk> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="36MUnK8Ful1ZaR9t" Content-Disposition: inline In-Reply-To: <93bee44a-f976-194a-7c24-f5c7daf95c22@youngman.org.uk> User-Agent: Mutt 2.0.3; VIM - Vi IMproved 8.2 X-Provags-ID: V03:K1:msj0rsTC3f1MpMMOsTWpgCQx20fdsbEOFWQoNXW+Au+lLt1Yk2W DsTSPY7uAzqDrZ2QwmZH1Uqjr6b2pD+Ohx9j3I4P3Qm93oeda1rFtlrMd8BtI7eRlPtTCIW tkiztpMmebJtuVwSXdonzGZ70T7rjdApZ+IlYpUqy21/pdvSoH4grwPFCYgAuUa+2xsA15b b/uYe13oU571Zk/xDG7zg== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:uro3gZK6DT4=:Q4CcZPLxpKzk8Jnz/aIhul r/H3bPcp+nlIeE5s9zY6yx1zJfhzEM21zBrc5RjVdJNYzqogh4Jy5HZB/m98ChdgzUqMUZ0bp fQyPb4UwtS3wQKY5c2NBTLt+kH2CD31+7Ga7jQs+2BnmnSAcTunh8MQ8tF33VeXmqFomMqWX1 G5nQBkiG9NjfbI/xCRQeAnoqnzZ/EXc/0J59vYblrQLrYY/MfmH5Ddj2FomA+zvBKPEdWXTOK DX4WPj3wM0JWHs98hmIAMW9TwaXkeA6YJewGlRIA03t3WBqemZVAU8rqbVp87/JAOfo/yPjcT eo/mNd/PpO75Wzo7k2WF9nUI+xCwadhck+ZVkJvrRWze1hpPXqNPfqsyDqJaZg2E4/TvCUMer 9G6Lk49VcGma3jPLnQ5dM5T/FVIz96uIUona1s/J4+1obyoJGyLU2d4IXB0G7t+GERnx+8J4L tzm6AwAwJGOKf7rv7IbQvz1QcNNUhJGcnsd3Umwnq7uaH9rEL03euNJgcQFqPu6/7adygOJne SfOfP7bLH5FxQc+aiAm6K2RhZ9w9RxTK7C3H3RP8izKAuKAIS9pLdvNEc44dS6lUfWBqhTHnQ JY16DCtZAemWRUWS0moChqliCpOfA/NeJRkQztDL9QJzQmbnWApVODC2eYTxueRAqbhzkkLZ+ 5kiUuIytksvLzAK4y1Tyn0BsHzpljriPbs7V1x8VD2cz8ViOEJOjsXBtlKOXavoj/OO/TQwzF X/nQKUbTnNKr/ADIAWTLVl9vyXTDL3axfBHk/3nPXykQwkxeA/I9u+Ig+Aoatjbp+yfHhMZpn 1vsxdOhNdy8vme4peWJBZwTxBNe/P8NnBlWqMwL+Z7SsJHwCSXxIQEiCPIRFVWNqXjDRORoFP uy237oLGuV3/RHFQjy/w== X-Archives-Salt: c6dd603c-90b9-4985-96a7-98df4203e242 X-Archives-Hash: 3f7767c7aeb912e060988a304f467aee --36MUnK8Ful1ZaR9t Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable 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=E2=80=99s convert. >=20 > > 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=E2=80=99s why I use a very high setting (98=E2=80=A6100) 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 happ= ens > to the jpegs as you can always re-create them. I don=E2=80=99t really live the RAW way. They take up sooo much space and my camera=E2=80=99s OOC jpegs always look far nicer than anything I can produc= e with darktable/rawtherapee. Most of the time there are colour fringes and sometimes sensor patterns that I can=E2=80=99t 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=E2=80=99s far from rubbi= sh. ;-) But the OOC jpegs are so good that I don=E2=80=99t need a lot of post-proce= ssing. 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 =E2=80=93 say, 6 MP =E2=80=93 and on= ly 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=E2=80= =99s enough. There are exceptions of course, such as portraits, or the odd animal picture captured in just the right moment. --=20 Gru=C3=9F | Greetings | Qapla=E2=80=99 Please do not share anything from, with or about me on any social network. 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