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image size

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26 comments

  • Manuel Huettl
    Hi Pareshk

    Mostly the JPEG Quality Setting and the Size of your picture. Both can be edited in your process recipe. Capture One also shows you the expected files size when editing the recipe and you have your image selected.

    Maybe try the following settings: JPEG Quality 90%, Image Size 2000x3000

    Regards
    Manuel
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  • charles kasler
    Thanks Manuel. Will I notice any loss of quality at 90% JPEG?

    2000x3000 px/inch?
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  • Manuel Huettl
    2000x3000 px/inch?
    2000 x 3000 px. Total size / resolution.

    Will I notice any loss of quality at 90% JPEG?
    you need to judget for your self how much quality you loose. For me 90% is very good for jpegs. Sometimes 70 / 80 % is also fine, but this depends on the picture and the purpose for the picture. If you see any artifacts then you are definitely to low with the Quality-Slider.

    You can also use higher Quality and reduce the resolution / size further. E.g. for web you don´t need that high resolution. If you want a really big print, then the resolution should be as high as possible.

    => This is why Capture One lets you create different "process recipes", so you can use them for different purposes.
    There is an Capture One Video on youtube about "Process Recipes"... could be worth taking a look if your interested. 😉
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  • charles kasler
    Thank you!
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  • Benjamin Liddle
    Additionally, be sure to uncheck Save Thumbnails under the File tab for that recipe to save additional file size. Likely you won't need to have an embedded thumbnail.
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  • charles kasler
    Gd idea but that option doesn't show up in my process recipe...am I missing something??
    Process recipes does give me the option of small, medium or auto size if i right click. I have medium checked...would small be best, or auto? I don't want to sacrifice file quality.
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  • Ian Wilson
    Moderator
    Top Commenter
    I'm not sure where you are seeing small medium and auto size. But on the Output tab there is a Process Recipe section (Not to be confused with the list of process recipes at the top of the panel.) The Process Recipe section has a number of sub-tabs to control all kinds of stuff. One of those is labelled "File" and it includes a checkbox for "Create thumbnails on save".

    Ian
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  • charles kasler
    Ian - Small, medium & auto shows up on my screen if I click the 3 horizontal dots to the right of process recipes (plural).

    I do see the process recipe (singular) file tab and it only gives me the choice of root folder, sub name, sub folder...nothing else...this is strange.
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  • Ian Wilson
    Moderator
    Top Commenter
    Right - small, medium and auto just controls the amount of panel space allocated to the list of recipes.

    In the Process Recipe File tab, there should be a check box like this.

    https://farm5.staticflickr.com/4314/35212231604_410c07618a_z.jpg

    Ian

    Edited to add: unless that is a feature related to the operating system? Perhaps it's different on Windows?
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  • Robert Whetton
    [quote="Ian3" wrote:

    Edited to add: unless that is a feature related to the operating system? Perhaps it's different on Windows?

    windows builds it's own thumbnail, so that's a MacOS feature only..
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  • charles kasler
    Thanks Ian for yr efforts & for clearing up small, med, large. If thumbnails is Mac only i wonder how windows handles it? No need to reply... Again thanks for yr support.
    BTW I looked up file size & resolution for export & it's a complex issue, from what I read, with no clear answers.
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  • Robert Whetton
    [quote="Pareshk" wrote:
    Thanks Manuel. Will I notice any loss of quality at 90% JPEG?

    2000x3000 px/inch?

    I export at 90% for all my JPEG files, no noticable loss of quality my side..
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  • Ian Wilson
    Moderator
    Top Commenter
    And I think you will find that the quality number is fairly arbitrary. 90% on Capture One's scale is not the same as 90% on some other app's scale. I usually use 85% and can't see a difference, and the file size is a great deal smaller than 100%.

    Ian
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  • SFA
    [quote="Mnl" wrote:
    Hi Pareshk

    Mostly the JPEG Quality Setting and the Size of your picture. Both can be edited in your process recipe. Capture One also shows you the expected files size when editing the recipe and you have your image selected.

    Maybe try the following settings: JPEG Quality 90%, Image Size 2000x3000

    Regards
    Manuel


    In addition to the above ...

    Content can make a lot off difference to how the jpg can be compressed.

    Large areas (in photographic terms) of consistent colour can be compressed a lot. Small areas of detail maybe hardly at all.

    Grey as a colour can be a challenge. Noise, especially "small" noise, will also tend to demand more data storage.

    The size of the image is not indicative of file size by itself. Compression quality, if in effect removing "small noise" for example, may have a large effect on many images and a very large effect on others.

    Best to experiment to gain a feel for it.

    HTH.


    Grant
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  • charles kasler
    Thanks again!
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  • charles kasler
    update...I downloaded more images from my camera. I'm understanding more but still it's mysterious:

    all this batch of images are 14 mb out of the camera before editing. I zoomed to 100%, enabled proofing, clicked export variants, and moved the quality slider as far down as 0 & no change. Am I missing something re proofing?? Thanks.
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  • Robert Whetton
    [quote="Pareshk" wrote:
    I zoomed to 100%, enabled proofing, clicked export variants, and moved the quality slider as far down as 0 & no change. Am I missing something re proofing?? Thanks.

    Zoom 400% you'll be able to see the pixels in more detail, and definately see a difference between 1 and 100 😊
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  • charles kasler
    I just tried it & no response. Something is missing...these are raw files I'm exporting to jpeg...
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  • Ian Wilson
    Moderator
    Top Commenter
    So what is your method here of creating the JPG files? Are you going File > Export Images... or File > Process?

    Ian
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  • charles kasler
    Neither - I just click the toolbar shortcut that looks like an upward pointing arrow. It opens a box with export location, naming, recipe & options.
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  • Ian Wilson
    Moderator
    Top Commenter
    [quote="Pareshk" wrote:
    Neither - I just click the toolbar shortcut that looks like an upward pointing arrow. It opens a box with export location, naming, recipe & options.

    OK - that is the button equivalent of File > Export Images...

    Have you tried using Process instead? The gearwheel* on the toolbar, or Ctrl-D, or File > Process? That way you can set up and save process recipes on the Output tab.

    And whether or not you see a visible difference in the image, does changing the JPG quality slider make a difference to the file size? It certainly should.

    Ian

    * I am not sure whether the gearwheel is on the toolbar in the default set-up, but you can customise it to put it there, or just use Ctrl-D on Windows (Cmd-D on Mac).
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  • charles kasler
    thanks Ian. actually i already have process recipes saved that show up when i click that export arrow. I tried "process" & get a message - the batch queue is currently stopped. I click yes to start it & nothing much happens. I mostly export just 1-3 files at a time... No change in file size even when the quality is 0.
    I don't know what's happening but it basically works for me as is, except for large file size. I may take it up with tech support, or are you from tech support??
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  • Ian Wilson
    Moderator
    Top Commenter
    No I'm not from tech support - just another user!

    Raising a support case is a good idea.

    Ian
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  • Robert Whetton
    could be a Sony bug?

    what I get with Canon files
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  • Manuel Huettl
    @ Bobtographer: great comparison!
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  • Jean1
    [quote="Mnl" wrote:
    Hi Pareshk
    Capture One also shows you the expected files size when editing the recipe and you have your image selected.

    It's a rough guess though : my processed files are always much bigger than the expected size, sometimes double ! Some sites limit the size of the files that they will accept and it takes several attempts for me to get it right.

    I wish the prediction could be more accurate.
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