PhotoRaw is a simple yet effective raw image viewer and converter for iOS. PhotoRAW is a universal iOS app which allows you to view and develop raw camera files by adjusting exposure, brightness and contrast, then export the processed file. Universal app works on all iOS devices. Transmits photos directly into Photoshop. Utilizes 16-bit processing. No limit on image size due to the virtual memory utilization.
PhotoRAW does exactly what half of the name suggests. RAW. Using full resolution JPEG to transmit straight to photoshop. You can do normal editing but this will help you to keep the full image, and you can even use iTunes for file sharing.