How to capture 5MP Image in iPhone devices with 8MP camera?

Question

I want to capture images with 5 MP resolution in an iOS device where maximum image sensor capture resolution is 8 MP.

The presets provided in Avfoundations AVCaptureSessionPresetPhoto gives - 3264x2448 - 8 MP resolution VCaptureSessionPresetHigh gives - 1920x1080 - 2 MP resolution

Is there any way/workaround for capturing 5MP directly, instead of capturing 8MP and then downscaling?

Answer 1

iOS gives very limited output resolutions from Camera.

You mentioned correctly that largest size is 8MP and next preset goes down to 1080p or ~2MP. The expectation it seems is to downscale/crop the image as the application requires, however the SDK doesn't give a single API to get required resolution or output image.

Hope this helps.

Answer 2

AVCaptureSessionPreset gives only constants resolutions (You can see API references). If you want to save image in custom resolution, you can find here Save image with custom resolution