Author Topic: How to save uncompressed jpg? (Read 4846 times)

franct · « **on:** October 07, 2017, 12:47 »

Hi all,

I would like to try to seeling picture on Robertharding. In the guidelines, they required "jpg format ... be a minimum of 50mb uncompressed".
How can I save "jpg format uncompressed"? On Lightroom, it seems not possibile, on Photoshop I didn't found anything about "jpg uncompressed" in the settings, there is only jpg and other settings, but nothing about "uncompressed".
And anyway, when I export on Lightroom or Photoshop, jpg files are much smaller than 50mb. They can be at most around 20-25. Original raw files are around 24mb (I have a Sony A7 II)?
Someone can help me?

Thank you

ShadySue · « **Reply #1 on:** October 07, 2017, 14:27 »

X uncompressed means the file size when flattened but before it's converted to a jpeg.

Jo Ann Snover · « **Reply #2 on:** October 07, 2017, 14:36 »

You can see the number you're looking for in Photoshop's Image Size dialog (if you've flattened your image and converted it to 8 bit). Up at the top.

Here's a blog post from PhotoShelter that explains

https://blog.photoshelter.com/2008/06/uncompressed-image-file-size/

franct · « **Reply #3 on:** October 07, 2017, 14:59 »

Thank you! PhotoShelter explanations is exactly what I was looking for!

pancaketom · « **Reply #4 on:** October 07, 2017, 15:16 »

why any site persists in describing their required sizes this way utterly baffles me.

Quasarphoto · « **Reply #5 on:** October 07, 2017, 17:07 »

They have a global ranking lower than Mostphotos and picky like Getty. They go to the 'ohwell' category. File size, compressed/uncompressed depends on the number of colours and details in the photo.

Jo Ann Snover · « **Reply #6 on:** October 07, 2017, 17:55 »

Quote from: Quasarphoto on October 07, 2017, 17:07

...File size, compressed/uncompressed depends on the number of colours and details in the photo.

No

Uncompressed file size does not vary with image content. Uncompressed size (in bytes) = pixels wide x pixels high x bit depth

Compressed files can be lossless (TIFF) or lossy (JPEG) and those sizes do vary with image content and compression level (for lossy formats)