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10-06-2017, 04:55 PM   #1
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just_life_photograph's Avatar

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problem with infinity focusing

Hey All! I went out last night to shoot the full moon and could not get the moon to be sharp. I have a K3ii and I shot mostly with my 18 -55 lens because I wanted to get some of the foreground and then in frustration, I switched to my 55 - 300, which gave me a double moon. (I realize that some of the flare was due to a dirty lense).


6509 : f4.5 / ISO 1600 / 2.5 shutter
6519: f5.0 / ISO 400 / 2.0 shutter
6531: f 8.0 / ISO 3200 / 0.8 shutter
6546: f 7.1 / ISO 100 / 1.0 shutter
6537: f4.0 / ISO 400 / 1.3 shutter


Help! Problem with camera or 'user error'?


Thanks!
Cynthia

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10-06-2017, 04:59 PM - 1 Like   #2
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They aren't sharp because they are heavily overexposed. The double moon is a flare that could be caused from condensation or a cheap filter
10-06-2017, 05:20 PM - 1 Like   #3
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I agree they are over exposed. Remember the moon is actually pretty bright. My guess looking at these that there is a filter on the front of the lens.. I have had the sme results when I forgot to remove my filter whileshooting night scenes
10-06-2017, 06:36 PM - 3 Likes   #4
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The proper exposure for the moon is more like a daytime setting because it's actually lit by full sunlight.

Just as there's the sunny f/16 rule, there's the loony f/11 rule as in aperture of f/11 and shutter speed of 1/ISO.

Thus you might try: f/11, ISO 100, and 1/100 second or maybe f/8, ISO 100, 1/200 second shutter or variants like that.

10-06-2017, 08:42 PM - 1 Like   #5
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You may practice with a single candle in a dark room..apply to your moon exposures..
10-07-2017, 02:52 AM - 1 Like   #6
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I wouldn't go slower than 1/15s, Cynthia.

And if you have a UV filter, fling it into your kitchen bin and replace it with a lens cap.
10-07-2017, 08:30 AM - 2 Likes   #7
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QuoteOriginally posted by photoptimist Quote
The proper exposure for the moon is more like a daytime setting because it's actually lit by full sunlight.

Just as there's the sunny f/16 rule, there's the loony f/11 rule as in aperture of f/11 and shutter speed of 1/ISO.

Thus you might try: f/11, ISO 100, and 1/100 second or maybe f/8, ISO 100, 1/200 second shutter or variants like that.
Never heard of the Luny 11 rule! Awesome! Always used the Sunny 16 rule, but the shots were often about 1 EV under.

Agree with all the above: a) Remove any filter from lens. b) Turn on SR if handheld: Turn off SR if on tripod. c) Set camera to manual exposure mode. d) Assuming you're shooting at a focal length up to 300mm, I'd suggest ISO 200, f/8 @ 1/400". e) Focus manually with live view. You will have a bit less flare with a prime telephoto.
10-07-2017, 06:11 PM   #8
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Thanks everyone! Great advice! What a generous group of people on this forum! Yes, I have UV filters on both lenses (the cheapest I could find) and they will be disposed of quickly! Can't wait to try out your suggestions! Thanks again for helping me learn!

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