With Release 1.12 of 645 PRO we’ve continued to enhance the performance of our flagship iPhone camera app. Some under-the-covers enhancements mean that it demands less from iPhone’s processor and memory than ever. That means snappier response, quicker file-saving and increased battery life.

But that’s not all…

We’ve added the option (via the main iPhone Settings.app) to save only TIFFs (rather than JPEG+TIFF) if you’re shooting in Q-Mode, with the Film Modes and Backs disabled; so if you only want the one file for post-processing, and you want it as a TIFF (rather than a JPEG), you’ve got it.

We’ve added the ability to lock the Back and Mode Selectors in position. Some users found they were changing settings by accident, and so taking a different photograph to the one they wanted (particularly hard to spot for those who choose to shoot with the Live Preview viewfinder option disabled). Now, however, you can tap-hold the dials to lock (and later unlock) them.

We’ve completely re-written the Live Preview viewfinder option to make it both quicker and sharper—while continuing to show you what your final photograph will look like—in real time. This is now doubly useful, as we’ve given you tools to have much more control over how that final image will look.

That’s because we’ve added adjustable, real-time filters to 645 PRO’s Film Modes. And when we say “filters”, we mean it in the old-school way; digital recreations of the color-correcting glass filters that used to be such a feature of photography.

Swipe the viewfinder left or right to cycle through the filter options: four primarily targeted at color photography and five for B&W:

• Warm #85
• Warm #81
• Cool #80
• Cool #82
• Red
• Green
• Blue
• Yellow
• Orange

Because the filters are digitally applied after the image has been captured, they can be used to override some elements that the hardware and firmware impose. For example, if you’re shooting color and are unhappy with the automatic white balance your iPhone has selected (and can’t get to an alternative light-source in order to lock the white balance at a setting you prefer), you can make the image’s color temperature cooler or warmer using one of the top four filters in the list. And if you’re shooting B&W and would like—say—more dramatic skies or “cleaner” foliage, select the appropriate filter (typically red and green respectively) from the next five.

The sharp-eyed will have noticed that there is no mention of the filter density (generally indicated with a letter after the “numbered” filters, or terms such as light and medium with the others). That’s because all the filters are adjustable. When you mount a filter it is at 25% density, but you can change that simply by swiping the viewfinder up and down, to anywhere between 0% and 100%.

Incidentally, while the “warm” and “cool” filters are mainly for color photography and the others for B&W, there’s nothing to stop you using any filter you like with an Film Mode—and an intense colored filter can create some pretty wacky moods in a color shot if you’re that way inclined!

Tell-tales on the lower corners of the viewfinder tell you what filter you’re using (if you are), and its intensity:

(Yes, those are sweet waffles with bits of bacon in them—and what’s not to like about that?)

The full update list for Release 1.12:

➢ Significant further performance improvements

➢ Significant further power management improvements

➢ Enhanced video preview quality

➢ Photo filters: swipe viewfinder left-right to select; swipe up/down to adjust intensity

➢ Option to save JPEG+TIFF or TIFF Only in Q-Mode (via Settings.app)

➢ Tap-hold now locks Mode and Back Selectors to prevent changing settings accidentally

➢ Corrected behavior of shutter release AF lock when photo taken before acquisition/locking has occurred

➢ Modified Mode and Back Selectors to prevent false-positive double-tap detection