ON1 Photo Raw is fast and state-of-the-art. It will open high megapixel photos in a snap. Rendering and adjusting sliders will preview in real time without any lag.
ON1 Photo RAW 2018.1 is the only photo editor designed by photographers, for photographers, and the best alternative to Adobe Lightroom and Photoshop. It works on a Mac or Windows with no subscription. Try it free!