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Live View with Lens Stopped Down

grnzbra

Springfield, US
416 posts

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grnzbra Silver Member Nikonian since 28th Sep 2011
Tue 18-Jun-13 06:52 PM

This weekend there will be a super moon which I would like to shoot with a 5100. For all critical focusing needs, I use live view because I don't believe autofocus is accurate enough. When viewing the moon in live view, it shows up as only a bright light in the sky with no detail. I focus on the edge of the moon. If, however, I were able to see surface detail, which shows up quite well in the resulting picture, I believe I could get my focus sharper. Is there any way to force the diaphragm to stop down to its preset level while still viewing in live view?

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Leonard62

Pa, US
4419 posts

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#1. "RE: Live View with Lens Stopped Down" | In response to Reply # 0

Leonard62 Gold Member Awarded for excellent contributions and sharing his in-depth knowledge and experience with the community, especially of Nikkor Lenses Writer Ribbon awarded for his contributions to the Nikonians Resources articles library Nikonian since 15th Mar 2009
Tue 18-Jun-13 11:03 PM

If you set the aperture before turning on LiveView you will be at the preset aperture. I assume you are using aperture priority mode.

I have taken hundreds of moon photos but I don't think ever in LiveView mode. I always see lots of detail but never use a lens shorter than 400mm. If the lens has VR I also handhold. Here's a recent moon shot taken with the D800, AFS 300mm f4 and the TC 20E III, wide open.

Click on image to view larger version


Len



Attachment#1 (jpg file)

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grnzbra

Springfield, US
416 posts

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#2. "RE: Live View with Lens Stopped Down" | In response to Reply # 1

grnzbra Silver Member Nikonian since 28th Sep 2011
Wed 19-Jun-13 01:20 AM | edited Thu 20-Jun-13 10:40 AM by grnzbra

WOW!

How did you focus?

And white balance? I used direct sun, but would something else be better?

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Leonard62

Pa, US
4419 posts

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#3. "RE: Live View with Lens Stopped Down" | In response to Reply # 2

Leonard62 Gold Member Awarded for excellent contributions and sharing his in-depth knowledge and experience with the community, especially of Nikkor Lenses Writer Ribbon awarded for his contributions to the Nikonians Resources articles library Nikonian since 15th Mar 2009
Fri 21-Jun-13 10:01 AM | edited Fri 21-Jun-13 10:09 AM by Leonard62

>WOW!
>
>How did you focus?
>
>And white balance? I used direct sun, but would something else
>be better?
>

I used single point AF-S, spot metering and Auto WB. The focus accuracy with this lens is dead on and didn't require fine tuning, even with the TC.

Len

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grnzbra

Springfield, US
416 posts

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#4. "RE: Live View with Lens Stopped Down" | In response to Reply # 3

grnzbra Silver Member Nikonian since 28th Sep 2011
Fri 21-Jun-13 02:31 PM

Thank you very much for the assistance. I will be trying it this weekend and see how things work out.

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grnzbra

Springfield, US
416 posts

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#5. "RE: Live View with Lens Stopped Down" | In response to Reply # 3

grnzbra Silver Member Nikonian since 28th Sep 2011
Mon 24-Jun-13 01:37 PM

Where did you place the focusing spot. The surface is all gray and white at best. Is there a particularly good spot on the moon that yeilds better focusing results than at other spots?

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Leonard62

Pa, US
4419 posts

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#6. "RE: Live View with Lens Stopped Down" | In response to Reply # 5

Leonard62 Gold Member Awarded for excellent contributions and sharing his in-depth knowledge and experience with the community, especially of Nikkor Lenses Writer Ribbon awarded for his contributions to the Nikonians Resources articles library Nikonian since 15th Mar 2009
Mon 24-Jun-13 04:44 PM | edited Mon 24-Jun-13 05:02 PM by Leonard62

I just center the moon in my viewfinder. The single center point is on the center of the moon. I just fire away. I'm guessing since the moon is fairly small in the viewfinder that the focus point is large enough to cover a fairly large area of the surface.

Here's an example from a shot I took on Friday.

Click on image to view larger version


Len


Attachment#1 (jpg file)

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grnzbra

Springfield, US
416 posts

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#7. "RE: Live View with Lens Stopped Down" | In response to Reply # 6

grnzbra Silver Member Nikonian since 28th Sep 2011
Tue 25-Jun-13 12:58 PM

Very interresting. This picture looks positively soft compared to your first picture, which looks extra crispy. Is that due to the sun being at a more pronounced angel, thus producing more pronounced shadows, in the first picture? Or has the first pic been through post processing? All of my pix look like the second picture.

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Leonard62

Pa, US
4419 posts

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#8. "RE: Live View with Lens Stopped Down" | In response to Reply # 7

Leonard62 Gold Member Awarded for excellent contributions and sharing his in-depth knowledge and experience with the community, especially of Nikkor Lenses Writer Ribbon awarded for his contributions to the Nikonians Resources articles library Nikonian since 15th Mar 2009
Tue 25-Jun-13 02:09 PM | edited Tue 25-Jun-13 02:12 PM by Leonard62

A full moon will always have less detail because there are fewer shadows. Your photos will require more post processing because of the lower contrast. My photo was not quite a full moon. You can see more detail at the bottom where there are shadows. All my moon photos require some post.

edit: Also the second photo was taken on a fairly hazy night. When I took the photo I thought my lens had fogged up but it didn't.

Len

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grnzbra

Springfield, US
416 posts

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#9. "RE: Live View with Lens Stopped Down" | In response to Reply # 8

grnzbra Silver Member Nikonian since 28th Sep 2011
Tue 25-Jun-13 02:45 PM

Thank you. You've taught me a lot.

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G