a little trick I use , assuming you have an iphone (or similar) , is to download a FREE app that shows angles. Hold the phone against the flat side of your camera . It is pretty damn accurate and can be done in the daylight hours.
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a little trick I use , assuming you have an iphone (or similar) , is to download a FREE app that shows angles. Hold the phone against the flat side of your camera . It is pretty damn accurate and can be done in the daylight hours.