Took these shots out my window last night. Cranked up the exposure and ISO, to widen the depth of field I set the f-stop to the highest number I could (f22) without going over a 30 second exposure (because that is the maximum exposure time on the D400). I tried both 17-85mm f/4 (at 85 mm) and Tamron 90 f/2.8 lenses, but the 17-85mm had a wider depth of field, even when setting the same f-stop (???). Set the 10 second timer, then with 1 second to go I held up my speedlight right up to the dial and manually flashed it to charge up the lume. I used the camera’s noise reduction, but all that seemed to do is make the fine grain noise into coarse grain, which I’m not sure is better.