Viewfinder Preview is an iPhone app for previewing camera framing for any combination of camera and lens. Instead of spending all that time setting up your big camera, just choose your desired film/sensor size and focal length in the app and point the iPhone camera at what you want to photo to verify framing. If you are happy with the framing then you can get the big camera out. The app has a large database of camera sensors details and film formats but if the format you desire isn’t there you can add your own custom format. The app is targeted at stills photographers or film makers working in either film or digital. If you don’t have your big camera with you, Viewfinder Preview is still great for photo sketching, location scouting or story boarding.

The app includes

- Customisable menus so you can include the film/sensor formats and focal lengths you care about.
- A fully configurable light meter.
- You can take photos with it, so you have a record of shots you were framing.
- Photos taken with the app include additional data that describe the film format, focal length and lighting meter settings at the time the shot was taken
- Add notes to your photos
- A photo gallery for viewing photos taken with the app which also displays the additional data
- Share images in emails, messages
- Create albums of photos from the same project, trip etc
- Create PDF documents of albums
- Film stock emulation
- Wide angle lens adapter support

What’s New

Version 1.8.4

- Improved stability for Rangefinder mode

Ratings and Reviews

4.7 out of 5
56 Ratings

56 Ratings

schafphoto ,

Great tool for Large Format photogs

I use this all the time when scouting photos and deciding which lens to mount on my 4x5 or 5x7 camera. I can’t wait for the wide angle lens compatibility upgrade to use the wide angle lens on the 11-Pro to see visualizations wider than 90mm.

It would be helpfull if the expose button could be set to screen capture the whole screen with the overlay and data in addition to a setting to just take the photo only.

Thanks. Great app.

rskmd83 ,

Important app for large format

Simply a fantastic app!! Getting a bit on in years so I love the fact that I can frame my shots without shlepping my full kit. The histogram is an added bonus as is the exposure info.
In addition, App offers extensive B&W emulation.
Super app for the large format photographer

Developer Response ,

Did you know you can choose a b&w film emulation to display in b&w.

Sebkim101 ,

Great but found some flaws

This is great to help pre-visualize framing and metering when shooting film. However one quirk that I couldn’t figure out is how to turn off HDR. HDR lightens shadows and darkens blown highlights, which isn’t represented when shooting film. Please allow it turn off for better simulation. Also, when in Manual metering mode, the shot frame is darker than how the screen is shown.

Developer Response ,

Hi, I hope 1.8.2 fixes some of the issues you were seeing. HDR has now been disabled while displaying film emulation. Also fixed an issue with manual exposure and changing cameras. although I didn’t fully understand your problem so don’t know if your issue has been resolved.


Adam Fowler
30.6 MB

Requires iOS 11.1 or later. Compatible with iPhone, iPad, and iPod touch.


English, French

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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