Annie B wrote:
Unfortunately 70mm is the longest focal length I have. I did think about using my 28mm or 55mm primes on my A6300. The pictures I took were of the bright moon in landscape backgrounds. I knew I wasn't going to get much detail I just wanted it to be sharp. Thought it would look cool against the trees and the buildings
This is difficult to capture... virtually impossible in a single shot. The dynamic range of a night scene versus the near daytime brightness of the moon is way, way beyond what any camera can capture!
The best way to expose for the moon itself is to switch your camera to fully manual exposure, then use a "Lunar 11" setup. This means setting f11 aperture, the ISO of your choice, then a shutter speed that's the reciprocal of the ISO (in other words, for ISO 100 use 1/100 shutter speed.... or for ISO 200 use 1/200... etc.) This gives one stop more exposure than the "Sunny 16" rule to make a fully manual setting in broad daylight. The moon is reflecting sunlight, but some light is always lost to absorption, a little more is lost to the distance, and some more to the light passing through the atmosphere.
You might "bracket" with a few shots under and over that exposure setting, to be sure you get one or more shots that are "just right". You can vary the exposure for the bracket shots however you wish by changing ISO, aperture or shutter speed... with some minor limitations. If it were me, I'd probably bracket in 2/3 stops.... such as f11, f9, f7.1 (two "clicks" = 2/3 stop on my camera, when working in the dark). But if you prefer to take more shots in 1/3 stop increments or your camera is set up in half stops, those would work fine, too. If you prefer to leave the aperture set, you could do the same with shutter speeds: such as 1/100, 1/60, 1/40 (2/3 stop increments). Or, if you started with a higher ISO (and a correspondingly faster shutter speed) and you would prefer to leave both aperture and shutter the same, and just change your ISO to take the "bracketed" shots: such as ISO 400, 250 and 160 (also 2/3 stop increments).
One thing you need to watch out for is too slow a shutter speed. The moon actually moves faster than we think. To avoid "subject motion blur" don't use any slower than 1/15... actually 1/30 or faster is better. That shouldn't be a problem, though, even ISO 100 will make you use a relatively high shutter speed (even 1-1/3 stop "over" when bracketing still ends up using 1/40).
Also beware of using too small an aperture, which causes an effect called "diffraction" that robs fine detail from images. With a digital camera that has an APS-C size sensor, f5.6 and f8 are pretty "safe", f11 will start to show just a little effect.... f16, f22 or smaller should be avoided. With a full frame sensor camera, f11 is generally safe... f16 will lose a little to diffraction... f22 and smaller is best avoided.
Now, to get the foreground detail - trees, buildings and such - make a second exposure at much different settings. You'll need much longer exposure for this... or considerably higher ISO... or larger aperture... or a combination of two or all three. It's really hard to recommend what to use, so much is dependent upon ambient light conditions, whether it's twilight or fully night, any other light sources, etc. All I can do is suggest you experiment. It might be possible to do with fully manual settings, or with some form of auto exposure... though auto might try to overexposure. Take multiple shots at different settings... some more bracketing, in other words.
In this second shot the moon will inevitably be massively over-exposed. So you'll need to combine the "correct" portion from each image later in post-processing. It should be pretty easy to do so, with the sky is pitch black or nearly so. Just copy the portion of the shot showing the "correctly exposed" moon and paste that onto the image that was exposed for the foreground (or vice versa).
I'd suggest using a tripod. It also can help to use Live View (or whatever your camera manufacturer calls it) and might be best to focus manually. On most cameras you can zoom in to check focus, in Live View. Using Live View also flips up the camera's mirror out of the way, preventing some internal camera vibrations that can effect images like this. It also can be helpful to use a remote release or use the camera's self-timer, so you aren't touching the camera at the instant of exposure, possibly bumping it (though it won't be too big a concern with a 70mm lens... any "camera shake" won't show the same way it would with a 700mm or 1000mm lens rig!)
Finally, you might want to shoot RAW, assuming that's possible with your camera. RAW images have more "adjustability" for exposure and white balance, later in post-processing, if needed. JPEG files don't have nearly as much latitude to make those sorts of adjustments.
Note: Are you familiar with Ansel Adams' "Moonrise Over Hernandez, New Mexico"? That was supposedly done in a single film exposure, but was actually taken right at sunset, while the last rays of the sun were still on the foreground scene and clouds in the sky. Adams said that the light changed so fast he didn't have time to take a second shot (working with a sheet film camera).