PHOV

I wrote PHOV to develop X3F files from Sigma's Foveon cameras on an iPhone or iPad, without going back to a computer. Plug in the SD card with a USB-C reader and pick the shots you want; files in Files, on iCloud Drive or on an external drive work too. The originals are never changed. On the DP and SD1 Merrill, development stays true to the camera's colors, in every color mode and in black and white: I checked it pixel by pixel on a DP2 Merrill. For the other cameras PHOV uses its own development, with the camera's white balance and noise reduction. Then you can adjust exposure, contrast, highlights and shadows, temperature and saturation, sharpness and vignette, or switch to black and white with the channel mixer. Adjustments stay with each photo, and you can change them any time. Export to JPEG, 16-bit TIFF or DNG. The DNG holds the linear RAW data and opens in any editor that reads DNG. Export one photo or a whole selection, to Photos, Files or another app. The (i) button shows the shot details: shutter speed, aperture, ISO, focal length, color mode. PHOV has no account and never goes online: your photos stay on your device. Works with X3F files from the DP1, DP2 and DP3 Merrill, the SD1 Merrill, the Quattro bodies and the SD9–SD15. The camera I tested most is the DP2 Merrill. If one of your files won't open, write to me: the address is on the support page. PHOV is not affiliated with or endorsed by Sigma Corporation. Sigma and Foveon are trademarks of their respective owners.