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Description
To use it, first find a scene that isn't moving (except for objects you'd like to blur out). Point the camera at a foreground object and press Record (red button). Make sure the object has some details the app can lock onto. Slowly move the phone left, right, up, and down, while keeping it aimed straight ahead. Don't tilt the camera, don't move it forward or backward, and don't move too far; an inch in each direction should suffice. The white square should track your object, i.e. stay fixed on it, while leaving a trail of red dots behind. Try to evenly cover the area inside the orange circle with these dots. (This will make more sense once you download the app.) After 10-15 seconds, press Pause (black bars) to view your synthetic aperture photograph. The foreground object should appear sharp and the background blurry. If the foreground comes out blurry, then tracking has failed. Touch to focus on a object with more detail, and try moving slower. This takes some practice.
For shooting in low light, do the same thing but record for only a second or two and hold the camera still. The app will track your subject, removing slight motions (and sensor noise). Although the goal is usually to hold the camera as still as possible during a recording session, you can produce some cool effects if you don't. Look at the screenshot of the Moroccan girl, where the phone was deliberately rolled partway from portrait mode to landscape mode and back while recording. If you'd like to watch a video explaining how to use the app,
How does the app work? There are lots of apps out there that capture a single image and blur it to simulate a shallow depth of field. This app is different. Every 30th of a second it captures a video frame, tracks the object you pointed at, aligns it to the same object in previous frames you captured, and blends the frames together. You don't see this happening, and you don't see the result until you press Pause, but your iPhone is very, very busy. By the way, the native iPhone camera app lets you touch to focus, and objects you don't focus on are blurry. But because the iPhone's lens is small these objects are not very blurry. Using this app, you can create a much shallower depth of field. The tradeoff is that the output image is HD video resolution, not still photo resolution.
This app has been tested on an iPhone 4, iPhone 3GS, and iPod Touch 4. If the app doesn't seem to be working for you, press Preferences (the gear icon) -> Help and read the Troubleshooting section. This help text, along with screenshots and examples, are available at http://marclevoy.com.
What's new in Version 1.1
- The Reset button, which looked like a trash can, is now a refresh icon.
First tap discards the current image, but leaves the focus square alone.
Second tap resets everything, including focus square size.
- The accelerometer is used to compensate for accidental pitching or
rolling of the phone. This may improve the sharpness of in-focus objects.
However, it cannot correct for yawing. This feature can be disabled on the
Preferences screen.
Bug fixes and improvements:
- HD resolution and Retina Display now working correctly on iPod Touch 4.
- Retina display improved, so option to disable it is no longer needed.
- GPU blending improved, so option for CPU blending is no longer needed.
- Touch-to-focus didn't also touch-to-expose. Now it does.
- White balancing now locks during capture, making blending more reliable.
- Fixed several bugs in handling of pan and pinch gestures.
- Fixed bug causing app to crash when reactivated from background quickly.
- Images captured in landscape mode are now stored with correct orientation.
- Tracking is more stable, and reacts more gracefully if tracking is lost.
- Improved performance and fixed several bugs related to saving images.
Known issues:
- Double tap on Reset (refresh icon at left side of toolbar) recenters the
focus square, but doesn't revert from spot-based focusing and metering to
camera's default area-based algorithms. Apple provides no way to do this,
except by killing and relaunching the app.
IPA size 0.9 MB
LANGUAGES: English
REQUIREMENTS: Compatible with iPhone 3GS, iPhone 4, and iPod touch (4th generation). Requires iOS 4.2 or later.
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