Combining flash with an urban background taken at night requires you to determine two separate exposures. Sure, you can put your camera on fully automatic and hope the results are what you hope for, but if you want to take control of the creative process, first you have to take a test shot on the background. Then, using the same lens aperture and ISO (the shutter speed is irrelevant except it has to be slow enough to sync with the flash), make test shots on the subject with various power settings on the flash. You can hand hold the camera unless the shutter speed is too slow; then you need a tripod. A tripod is also a function of keeping the ISO relatively low. But if the shutter speed is long, typical of night photography, be aware that a human subject can't be perfectly still during a lengthy exposure. My settings for this shot were 1/8, f/10, and 800 ISO, and I used a tripod. The original color of the model's costume was orange; I changed it to purple in the hue/saturation dialog box in Photoshop. This is the Rialto Bridge in Venice, Italy. My next photo workshop to Venice is February 18-25, 2022.
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