topic Re: Moon photos? - EOS Rebel T7 in EOS DSLR & Mirrorless Cameras

Moon photos? - EOS Rebel T7

Tintype_18 — Mon, 11 Dec 2023 19:14:04 GMT

I can't find the photos to give the settings for my T7. It was a full moon, set the camera on the tripod with the Sigma 150-600mm lens set at 600mm. I could look through the viewfinder and see the "man in the moon" clearly. However, when I downloaded the photos on my laptop, I got a surprise and disappointment. The jpg photo came out perfect but the RAW photo was a blurred blob. Again, sorry I can't find the photos to give the settings. I know you are taking potluck with suggestions...like take up word search puzzles. Thanks.

Re: Moon photos? - EOS Rebel T7

Tronhard — Mon, 11 Dec 2023 19:27:42 GMT

Hi John:
Trying to do analysis of an image without data is a challenge!
Are the JPG and RAW images the actual same image? I would expect the RAW file to be adapted by the algorithms for things like exposure, but much less for focus - could the blurring you recall have just been exposure? Given the full moon is actually a very bright object against an essentially black sky, it is usually the case that just focusing and relying on the camera to get the exposure right, especially if using the default evaluative metering will result in the moon being blown out, because the contrast is too great across the FoV.
I shoot with spot metering, and may do so in either manual or Av mode, but either way, I can use a fairly fast shutter speed, and usually have to reduce the exposure down quite a bit to get the details. For example this image:
Canon EOS R5, Sigma 150-600c@600mm, f/8, 1/1250sec, ISO-640
Here is the readout of the settings from PS:

Re: Moon photos? - EOS Rebel T7

Tintype_18 — Mon, 11 Dec 2023 23:20:48 GMT

Yes to your question. Much to the chagrin of some, I shoot both RAW and jpg. Thanks for your tips and your method of spot metering and Av setting. Will consult the manual on spot metering. Have no idea where to look for the photos. Thought I had made a separate file for such photos.

Re: Moon photos? - EOS Rebel T7

Tronhard — Tue, 12 Dec 2023 00:36:18 GMT

Ha! Well, I shoot both, so you're in good company! 🙂 I hope it works out for the next full moon that is not so far away. The good news one can shoot check out the result, tweak and have another go.

Re: Moon photos? - EOS Rebel T7

Tintype_18 — Tue, 12 Dec 2023 13:14:27 GMT

Thanks again, Trevor. I thought you might have a crystal ball that reveals the answer. I'll search and see if I can find the photos and post them along with the settings. Cheers.