Processing Files to Maximum Size

Comments

10 comments

  • Drew
    Change the Scale to 250%. That is the limit.

    If you process at 16Bit and 250% the resulting image is approx. 1GB, 60" x 45".
    If you change the PPI to 600, the resulting size is simply adjusted by a value of 1/2.
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  • NN1497102
    Thanks for responding, Drew. Can I change the ppi to 400 and keep all the other settings the same? How will that affect the file?
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  • NN1497102
    Are there any published articles that discuss file processing in Capture One?
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  • NN1497102
    Also, what is happening when you change the scale from 100 percent to 250 percent? Are the pixels being interpolated? Sorry for all the questions. I'm trying to understand how processing works.
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  • Drew
    Adjusting the PPI simply changes the concentration of information. The overall amount of data stays the same, however the Information in a specific dimension changes. For example, a 10 x 10 at 300PPI simply becomes a 5 x 5 at 600PPI. So in your case a 10 x 10 at 300PPI would become a 7.5 x 7.5 at 400PPI.
    In regard to interpolation, you could pay devils advocate and argue how that term relates to a RAW file but really whenever you upres something your sampling data... which is in fact interpolation.
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  • Newell Everett

    Not seeing other requests for file-size limits in a Process Recipe, but it's needed very badly. The above comments explain how to accomplish this for one file - that's great, but I am batch-processing hundreds of images at a time.

    For clarity - I upload to websites with file size limits (say, 20mb, as with a Squarespace Gallery). I export some number of photos to be uploaded to Squarespace. Turns out some are over 20mb. Without a built-in tool to limit file sizes, I now have to go back through all the "overages" and make some adjustments to bring them under 20mb. I have looked at *estimated* File Size under Process Summary, but that is often pretty far off the final/actual exported File Size. So, I have to spend some time going one-by-one adjusting each file's Process Recipe to hit the limits. Often, I have to do this more than once, as second or third exports still might not hit the limit. This is very time-consuming and angers me about an otherwise-great software package. Note also this is a tool in Lightroom (one of the things that slowed me down in migrating from LR to C1).

    Always open to alternative methods, if anybody can suggest something (thanks in advance for your input). Maybe I have missed something that allows this.

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  • Ian Wilson

    Are you really using Capture One version 3? (You have posted this in the version 3 section of the forum. Capture One 3 dates from about 15 years ago.) 

    I suggest you post again in the Features Request section, and you might get more response.

    Ian

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  • SFA

    Would it matter much if the standard setting for an produced a size that one might expect to be well under the maximum size limit? Thinking of the limit as a limit not a target? 

    What happens with the image afterwards that makes it significant to have as close as possible to 20Mb?

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  • Newell Everett

    @Ian Wilson - thanks for pointing that out. I did a search for the topic, but failed to look at what forum was used. I will post in features request (although I must say, I don't have lots of hope, given this was brought up 11 years ago.

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  • Newell Everett

    @ SFA - Yes, I certainly don't want to excessively shrink a file just to stay under a limit. For example, posting 1.5mb files to stay under a 20mb limit would seriously degrade the images posted. I know from using this feature in Lightroom that the output won't be exact (maybe resulting in 17mb or so for a 20mb limit), but I'm fine with that.

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