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>>170479 >Lossless compression ftw. Lossless compression ftl in this particular case. It's nigh-impossible to tell an 85% or 90% JPEG from a PNG visually, unless it's like a multiple-generation JPEG, but the JPEG will be significantly smaller. Also, JPEGs can have EXIF data.
She might be shooting with a camera that only does JPEG (or just shooting a camera on which she only shoots JPEG) and not want to add double-compression artifacts to her images, which I could understand. Though it's mostly a baseless fear if her original JPEGs are highest quality, unless she likes to save and reopen the file a lot.
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