Photo Critique and Edit Thread

Even though I have done focus stacking in the past, I typically don't do this.
I just make sure of the aperature and focus are in order.
Thanks,
Gregg
 
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Afternoon rainbow at Bryce Canyon.....

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"Star Gate" - Southern Utah

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Thanks, this was approx 3min exposure.
 
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I just use an old Gitzo tripod with ball head for my night photography.
I use a cable release to minimize any vibrations to the camera.
Thanks!
 
Nanc & I just got back from a 10 day hiking/camping trip to Colorado/New Mexico.
Couple pics here (more later).


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"Nature's Art Canvas"
Painted Wall at Black Canyon of Gunnison, CO.
We visited this site several times while camping a few miles away.
Although the canyon plunges 2250ft down, we could still hear the loud sounds of the river rapids below.
We were completely alone at this visit!
This geological marvel is composed of solid gneiss stone with intricate lines “painted” of igneous pegmatite rock.



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"A Lost Civilization"
Mesa Verde - Colorado


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Shot near Mesa Verde, CO.
The green in the Milky Way is called air glow.
It's very faint to the human eye, but my camera was able to capture these wondrous colors during a 3 minute exposure.

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The 500 Rule for avoiding star trail says your full frame equivalent focal length would be 500÷(3×60) = 2.78mm. So what focal length was actually used?
I use a star tracker which allows me to shoot up to a 5 minute exposure with no star trails.
A lot more elaborate setup but the advantages are far more worth it!
My primary star photo lens is a Sigma 15mm
Thanks
 
I use a star tracker which allows me to shoot up to a 5 minute exposure with no star trails.
Wouldn't that blur out the foreground though? Or are the foreground and stars separate takes that are merged?
 
Yes, you are correct.
To get a balanced overall exposure, the foreground and sky are 2 different exposures that are merged together.
Thanks,
Gregg
 
Yes, you are correct.
To get a balanced overall exposure, the foreground and sky are 2 different exposures that are merged together.
Thanks,
Gregg
So you set up the tripod, take one photo for 3 minutes (sky), and then without moving the camera, you take a 2nd shot ('more normal evening shot') of the tree and landscape? Then you go home and merge one onto the other? How do you this...do you literally have to digitally cut out the tree and paste it onto the backdrop of the long-exposure night sky?
 
Yes, exposure blending is a common technique in astrophotographry.
A tedious process in Photoshop.
 

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