[darktable-user] JPG export image size

2017-04-28 Thread David Vincent-Jones
I have recently been exporting to fusion as full sized 16 bit tiff file format. Now when I export jpeg to email 1500 max size images with 90 quality the output size (~5 mb / image) is obviously incorrect. I have tried a restart and tried exporting to the desktop but the large size persists regardle

Re: [darktable-user] JPG export image size

2017-04-28 Thread Pascal Obry
Le vendredi 28 avril 2017 à 17:20 +0200, David Vincent-Jones a écrit : > I have recently been exporting to fusion as full sized 16 bit tiff > file format. Now when I export jpeg to email 1500 max size images > with 90 quality the output size (~5 mb / image) is obviously > incorrect. Right, looks w

Re: [darktable-user] JPG export image size

2017-04-28 Thread David Vincent-Jones
I just sent a full sized (4924 x 3274) file to gimp as a jpg with 90 quality. I assumed that gimp would fix the problem. It is shown as a jpg on gimp. From gimp I exported it as a jpg to my desktop where it is shown as 8.2 mb. This file is from a fusion creation that sits on dt with a size of 132

[darktable-user] Levels vs Tone curve

2017-04-28 Thread darktable
DT 2.2.4 What's the difference between the levels and the tone curve? * Should it be one or the other? * Which one is better/easier for setting the white point and the black point? * What are the differences? I've read the "introducing the levels module", it doesn't explain the difference --

Re: [darktable-user] JPG export image size

2017-04-28 Thread David Vincent-Jones
Yes the exported file looks just fine! On 04/28/2017 05:33 PM, Pascal Obry wrote: > Le vendredi 28 avril 2017 à 17:20 +0200, David Vincent-Jones a écrit : >> I have recently been exporting to fusion as full sized 16 bit tiff >> file format. Now when I export jpeg to email 1500 max size images >>

Re: [darktable-user] Levels vs Tone curve

2017-04-28 Thread David Vincent-Jones
I am sure that we each have different ways of using these modules. I do my basic processing with the tone curve and then as a close to final step often (particularly with B&W) use the levels to shift the gray mid-point. David On 04/28/2017 05:53 PM, darkta...@911networks.com wrote: > DT 2.2.4 >

Re: [darktable-user] Levels vs Tone curve

2017-04-28 Thread Bernhard
and to make it even more diverse: I don't use both of them - I do black- and white-point in exposure module and use the zone module instead of curves ... -- regards Bernhard http://www.bilddateien.de David Vincent-Jones schrieb am 28.04.2017 um 18:02: I am sure that we each have differen

Re: [darktable-user] JPG export image size

2017-04-28 Thread David Vincent-Jones
Moved an exported, reduced size, file back into dt and then re-exported it. This time the original data was a .raf and not a tiff. The file size remains incorrect. It would appear that the jpg export may be broken. David On 04/28/2017 05:54 PM, David Vincent-Jones wrote: > > Yes the exported fi

Re: [darktable-user] JPG export image size

2017-04-28 Thread Roman Lebedev
On Fri, Apr 28, 2017 at 8:05 PM, David Vincent-Jones wrote: > Moved an exported, reduced size, file back into dt and then re-exported it. > This time the original data was a .raf and not a tiff. > > The file size remains incorrect. It would appear that the jpg export may be > broken. What exactly

Re: [darktable-user] JPG export image size

2017-04-28 Thread David Vincent-Jones
2.3.0~git598.87e9b98-50.1 both raw and tiff files in dt appear to be exported without any requested resizing and without quality changes to jpg format. the output jpg files can be opened successfully in gimp and but appear locked in some way that gimp is also unable to resize them typically: a r

Re: [darktable-user] JPG export image size

2017-04-28 Thread Pascal Obry
Le vendredi 28 avril 2017 à 19:50 +0200, David Vincent-Jones a écrit : > 2.3.0~git598.87e9b98-50.1 So you're not using an official release. Can you try with a 2.2.4 to check whether you have the same issue or not? > typically: a raw 4810 x 2729 exported to jpg at 1500 x 1500 size 90 quality > re

Re: [darktable-user] JPG export image size

2017-04-28 Thread David Vincent-Jones
This appears to be a new problem, last day or 2, ... don't have 2.2.4 unfortunately but hopefully the problem will work its way out with the next release. I will just have to re-size and email out of dt. This is the openSuse repo. version. David On 04/28/2017 07:53 PM, Pascal Obry wrote: > Le ve

Re: [darktable-user] JPG export image size

2017-04-28 Thread Remco Viëtor
On vendredi 28 avril 2017 20:03:10 CEST David Vincent-Jones wrote: > This appears to be a new problem, last day or 2, ... don't have 2.2.4 > unfortunately but hopefully the problem will work its way out with the > next release. I will just have to re-size and email out of dt. This is > the openSuse

Re: [darktable-user] Levels vs Tone curve

2017-04-28 Thread I. Ivanov
Mostly preference to my understanding. Levels and zone mapping are targeting to lighten / darken certain areas. Tone curve is more complex and affects also the color intensity. A good approach with tone curve is to change to manual mode - then you can adjust lightness separately from the color.