I've noticed an offset/vignetting in the image when using the Fisheye, is there a fix for that?
The iPhone 4S/4 is a remarkable piece of engineering and design elegance. And like any precision piece of electronics these days, the placement of the camera assembly is very critical and subject to some variation. That variation is usually in an ever so slight offset of the embedded camera from being truly perpendicular with the glass back. When using the iPhone 4 in its native point-and-shoot mode, you'll never notice it. However, when you add a precision lens such as the olloclip fisheye, this offset creates a shift in the actual image, the amount of which will vary with every iPhone. This shift is typically only visible when taking still images, as the iPhone 4 uses a crop-factor when shooting in video mode, and therefore, the offset not visible.
To compensate for this shift, you can tilt the fisheye lens within the olloclip. We intentionally designed the olloclip to allow for this shift and adjust accordingly.
You can download a simple illustration here which visually shows you how to tilt lens...
If you don’t like the look of the vignetting you can always use one of the free apps to crop your image (iOS5 will have this feature built-in).
Remember, only a small amount of tilt is required and it should hold this position for some time. The Wide-Angle and Macro Lens combination can not be tilted due to the design of these lenses.
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