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I like PNG's lossless compression. I feel like PNG was a really bad format back when hard drives were 100GB, but now storage is so cheap. I didn't know JPEP-XL

I like PNG's lossless compression. I feel like PNG was a really bad format back when hard drives were 100GB, but now storage is so cheap. I didn't know JPEP-XL had a lossless mode. Other than that format, I don't know of any other formats that offer lossless compression other than bitmap and TIF. You can't really use TIFs in many contexts and bitmaps have no compression at all.

bobbylarrybobby 2y ago
I can't imagine a PNG actually having a good compression ratio for photographic data. Better at that point to just shoot RAW.
- nanidin 2y ago
  Why not?
  - tourmalinetaco 2y ago
    Because of how PNG compresses images. The high detail will lead to large images, and at that point it’d be easier to save the RAW output of the camera, offload the images, and do any compression later.
  - bobbylarrybobby 2y ago
    Because png compression is optimized for images with few distinct colors and long runs of the same color. Photographs are not like that.
TaylorAlexander 2y ago
RAW is the correct format for uncompressed images, and you can shoot RAW on iphone: https://support.apple.com/en-us/119916 https://support.apple.com/en-us/119916 > I feel like PNG was a really bad format back when hard drives were 100GB You talk about "hard drive" space even though phones don't have hard drives (more to the point, even if you transfer photos to your desktop they will start on your phone and take up space). The iPhone 15 base model comes with 128GB storage. Uncompressed images take up huge amounts of space and that still affects network transfer times, phone storage, cloud storage, etc. Anyway you can shoot RAW on your phone right now, which is what you are looking for. Still, it is a niche application because of the storage required.
dchest 2y ago
WebP also has a lossless variant, and it compresses much better than PNG.
eviks 2y ago
Storage isn't cheap, check the iPhone storage upgrade prices And apps have grown in size, and video/photo size has grown
- dark__paladin 2y ago
  "Storage isn't cheap" "check the [Apple product] upgrade prices" Under this logic, RAM is still $100 / 8GB, a factor of ~4x greater than non-Apple prices. A similar coefficient is true for their SSD storage pricing. Source: Mac Pro configuration page https://www.apple.com/shop/buy-mac/mac-pro/tower https://www.apple.com/shop/buy-mac/mac-pro/tower
  - eviks 2y ago
    Yes, under this logic you can't ignore the reality of a large % of users when making sweeping claims about the reality of all users. Also don't forget the fact that many devices can't be storage-upgraded, so this pushes the actual cost of extra storage even higher

bobbylarrybobby 2y ago

I can't imagine a PNG actually having a good compression ratio for photographic data. Better at that point to just shoot RAW.

nanidin 2y ago
Why not?
- tourmalinetaco 2y ago
  Because of how PNG compresses images. The high detail will lead to large images, and at that point it’d be easier to save the RAW output of the camera, offload the images, and do any compression later.
- bobbylarrybobby 2y ago
  Because png compression is optimized for images with few distinct colors and long runs of the same color. Photographs are not like that.

TaylorAlexander 2y ago

RAW is the correct format for uncompressed images, and you can shoot RAW on iphone: https://support.apple.com/en-us/119916 https://support.apple.com/en-us/119916 > I feel like PNG was a really bad format back when hard drives were 100GB You talk about "hard drive" space even though phones don't have hard drives (more to the point, even if you transfer photos to your desktop they will start on your phone and take up space). The iPhone 15 base model comes with 128GB storage. Uncompressed images take up huge amounts of space and that still affects network transfer times, phone storage, cloud storage, etc. Anyway you can shoot RAW on your phone right now, which is what you are looking for. Still, it is a niche application because of the storage required.

dchest 2y ago

WebP also has a lossless variant, and it compresses much better than PNG.

eviks 2y ago

Storage isn't cheap, check the iPhone storage upgrade prices And apps have grown in size, and video/photo size has grown

dark__paladin 2y ago
"Storage isn't cheap" "check the [Apple product] upgrade prices" Under this logic, RAM is still $100 / 8GB, a factor of ~4x greater than non-Apple prices. A similar coefficient is true for their SSD storage pricing. Source: Mac Pro configuration page https://www.apple.com/shop/buy-mac/mac-pro/tower https://www.apple.com/shop/buy-mac/mac-pro/tower
- eviks 2y ago
  Yes, under this logic you can't ignore the reality of a large % of users when making sweeping claims about the reality of all users. Also don't forget the fact that many devices can't be storage-upgraded, so this pushes the actual cost of extra storage even higher