Adobe announced the release of Lightroom for iPad, joining some of Adobe's other mobile products like Photoshop Express and Adobe Air. However, Lightroom for mobile will function as an extension of the desktop version rather than a standalone app.
Adobe wanted to "unlock professional-class photographic workflows from the confines of the desktop." Images can be edited anywhere, and changes are automatically synced with your Mac or PC.
Lightroom 5's Smart Preview technology creates smaller preview files for editing on mobile. The smaller resolution image preserves the same characteristics as the original, but it only takes up a fraction of the storage space.
Functionally, Lightroom mobile retains many of the basic features you would find on desktop. Image controls like exposure, contrast, clarity, filter, tones, and crops are all included, among other editing options.
Although the app itself is free, you will need to be a Adobe Creative Cloud subscriber to use it. You can see some of the pricing options on Adobe's website.
If you opt for a Creative Cloud membership, the cheapest plan starts at $9.99 a month and includes access to Lightroom 5, Photoshop CC, Lightroom mobile and a public portfolio site through Behance. Read more about Lightroom mobile on Adobe's blog.