How to image the moon with D7100??

Started May 25, 2013 | Questions
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starman1969
starman1969 Senior Member • Posts: 3,713
How to image the moon with D7100??

I do know how to take pictures of the moon and I have many. I know all about stacking, tracking etc. I did post a question in the astrophotography forum but there are so few viewers there.

The problem I have just run into is my D7100 Live View feature. When I was out last night trying to image the moon with it all I got on the LCD screen was a totally overexposed white blob. It did not matter if I lowered the ISO, increased the shutter speed or stopped the aperture down as much as I could. The moon was still a featureless blob.

This meant that I could not focus on it properly. I did not have that problem with the D7000. Does anybody have any ideas what's going on?

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 starman1969's gear list:starman1969's gear list
Nikon D800E Nikon AF-S Nikkor 14-24mm f/2.8G ED Nikon AF-S Nikkor 50mm f/1.8G Canon EOS 1000D Nikon D4 +5 more
ANSWER:
Nikon D7000 Nikon D7100
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Placation101 Regular Member • Posts: 455
Re: How to image the moon with D7100??

starman1969 wrote:

I do know how to take pictures of the moon and I have many. I know all about stacking, tracking etc. I did post a question in the astrophotography forum but there are so few viewers there.

The problem I have just run into is my D7100 Live View feature. When I was out last night trying to image the moon with it all I got on the LCD screen was a totally overexposed white blob. It did not matter if I lowered the ISO, increased the shutter speed or stopped the aperture down as much as I could. The moon was still a featureless blob.

This meant that I could not focus on it properly. I did not have that problem with the D7000. Does anybody have any ideas what's going on?

-- hide signature --

They are watching us......

okay so basically, just so we are on the same page. In matrix metering a picture of the moon will always be a white blob as the camera sees it. This is because it is shooting to average out the scene so it will bring up the exposure compensating for the black sky bringing it up too high for the moon (which is a tiny portion of the sky unless you have a huge lens).

the d7100 I believe is auto gain on the LCD meaning its not wysiwyg it chooses a brightness that allows you to focus. So somehow it's not keying in on the moon.

i would try playing with center or spot metering.

if you didn't zoom in try zooming in on the LCD so the moon fills a larger portion of the screen.

selected answer This post was selected as the answer by the original poster.
FujicaST605
FujicaST605 Regular Member • Posts: 462
Re: How to image the moon with D7100??

The moon is a sunlit object.  Expose as such.

 FujicaST605's gear list:FujicaST605's gear list
Nikon D7100 Nikon AF Nikkor 50mm f/1.8D Tokina AT-X Pro 12-24mm f/4 DX II Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF) Nikon AF-S Nikkor 85mm f/1.8G
starman1969
starman1969 OP Senior Member • Posts: 3,713
Re: How to image the moon with D7100??

Placation101 wrote:

starman1969 wrote:

I do know how to take pictures of the moon and I have many. I know all about stacking, tracking etc. I did post a question in the astrophotography forum but there are so few viewers there.

The problem I have just run into is my D7100 Live View feature. When I was out last night trying to image the moon with it all I got on the LCD screen was a totally overexposed white blob. It did not matter if I lowered the ISO, increased the shutter speed or stopped the aperture down as much as I could. The moon was still a featureless blob.

This meant that I could not focus on it properly. I did not have that problem with the D7000. Does anybody have any ideas what's going on?

-- hide signature --

They are watching us......

okay so basically, just so we are on the same page. In matrix metering a picture of the moon will always be a white blob as the camera sees it. This is because it is shooting to average out the scene so it will bring up the exposure compensating for the black sky bringing it up too high for the moon (which is a tiny portion of the sky unless you have a huge lens).

the d7100 I believe is auto gain on the LCD meaning its not wysiwyg it chooses a brightness that allows you to focus. So somehow it's not keying in on the moon.

i would try playing with center or spot metering.

if you didn't zoom in try zooming in on the LCD so the moon fills a larger portion of the screen.

That makes sense, thanks. I will try spot metering. That way the metering point will be completely covered by the moon. It should show up correctly then.

I can do a pic like this when everything works.

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They are watching us......

 starman1969's gear list:starman1969's gear list
Nikon D800E Nikon AF-S Nikkor 14-24mm f/2.8G ED Nikon AF-S Nikkor 50mm f/1.8G Canon EOS 1000D Nikon D4 +5 more
JeffryZ Senior Member • Posts: 2,307
Re: How to image the moon with D7100??
1

FujicaST605 wrote:

The moon is a sunlit object.  Expose as such.

I use manual. Set the exposure to the inverse of the ISO (1/100 th second for ISO 100)) and use the f/stop for a brightly sunlit object (f/ 16) and you will be extremely close if not right on.

Major crop and Photoshop adjustents to help the details but this was shot with my 80- 200mm f/2.8.  Never thought I could get this detail with a moon shot taken with a 200mm lens.

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Nikon D7100 Nikon AF-S DX Nikkor 17-55mm f/2.8G ED-IF Nikon AF-S Nikkor 70-200mm f/2.8G ED VR II Nikon AF-S Micro-Nikkor 105mm f/2.8G IF-ED VR Tokina AT-X Pro 11-16mm f/2.8 DX +1 more
zakkix Regular Member • Posts: 377
Re: How to image the moon with D7100??

starman1969 wrote:

I do know how to take pictures of the moon and I have many. I know all about stacking, tracking etc. I did post a question in the astrophotography forum but there are so few viewers there.

The problem I have just run into is my D7100 Live View feature. When I was out last night trying to image the moon with it all I got on the LCD screen was a totally overexposed white blob. It did not matter if I lowered the ISO, increased the shutter speed or stopped the aperture down as much as I could. The moon was still a featureless blob.

This meant that I could not focus on it properly. I did not have that problem with the D7000. Does anybody have any ideas what's going on?

-- hide signature --

They are watching us......

https://blog.sony.com/2012/07/how-to-shoot-the-moon-and-get-stellar-photos/

http://www.astropix.com/BGDA/INTRO.HTM

http://www.reddit.com/r/astrophotography

lorenzo de medici Regular Member • Posts: 205
Re: How to image the moon with D7100??

The live view mode does some strange stuff with aperture adjustments and exposure compensation.  The picture you see on the LCD screen does not necessarily correspond to the image produced by the camera.  It's some kind of simulation of what the camera thinks it will probably look like.  If you change the aperture, you have to exit live view and resume to see the result of the aperture change.  I would make sure that auto ISO is turned off, use spot focus and spot metering, and bracket your exposures anticipating that you'll get the best results around -2EV or -3EV.

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Nikon D600 Nikon AF-S Nikkor 24-70mm f/2.8G ED Nikon AF Nikkor 50mm f/1.8D Nikon AF-S Micro-Nikkor 105mm f/2.8G IF-ED VR Sigma 150-500mm F5-6.3 DG OS HSM +2 more
Sammy Yousef
Sammy Yousef Veteran Member • Posts: 4,583
Stop down before entering live view, or use ND filter.
1

Nikon cameras can't adjust the aperture while in live view. They will adjust the aperture to shoot (when the live-view screen blinks off) but you'll have to set aperture before going into live view. And as for shutter speed for video, you get what you're given.

If you're using AF just focus on the rim of the moon and adjust exposure manually.

If you're trying to shoot video of the moon, you'll have to stop right down before going into live view and as I haven't tried it I can't promise you that will work either.

A perfectly valid alternative is to use an ND filter on the camera. I'd probably use a variable ND filter for this application because brightness of the moon will vary.

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Sammy.
My forum postings reflect my own opinions and not those of my employer. I'm not employed in the photo business.

stevenjames
stevenjames Senior Member • Posts: 1,193
Re: How to image the moon with D7100??

Use your histogram.

Switch to manual exposure settings and cut down on the exposure until you nail it.

Steve

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www.StevenJamesPhotography.com

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Fujifilm X100S Nikon D7200 Nikon D500 Nikon AF-S DX Nikkor 35mm F1.8G Nikon AF-S DX Micro-Nikkor 85mm f/3.5G ED VR +11 more
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