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Lets see your stars and night sky

Africa

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#221 KaingU Lodge

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Posted 22 October 2016 - 09:28 AM

That second one is both stunning and very difficult to pull of!

 

Many thanks Peter.  I picked up my much longed for fast aperture wide angle - a Samyang 14mm f2.8.  So far I am very impressed with it.  Tack sharp when focused properly and a reasonable price. 


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#222 pault

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Posted 24 October 2016 - 08:36 AM

Yes the second is great. Milky Way and camp lights. There's a bit of stray, unwanted light in a couple of places but remarkably little and it looks great. How did you manage it - I am assuming it was not luck?

Waiting again... for the next time again


#223 KaingU Lodge

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Posted 24 October 2016 - 05:01 PM

Yes the second is great. Milky Way and camp lights. There's a bit of stray, unwanted light in a couple of places but remarkably little and it looks great. How did you manage it - I am assuming it was not luck?

 

Thanks Paul:

I kept my hand over the lower part of the lens for most of the exposure (to try and limit blowing out from the camp lights), counting to 25 in my head I then removed my hand (30 sec exposure).  Even then I had to add a graduated filter in lightroom over the bottom part of the image, pull down the highlights and exposure and job done.  Oh, and I had to be sure there was nothing around me before starting! 


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#224 KaingU Lodge

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Posted 04 November 2016 - 08:27 PM

Panorama at the rapids 3 nights ago.  New moon and Venus.  I should have been finishing my trip report ;-)

rapids pano_.jpg


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#225 penolva

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Posted 09 December 2016 - 04:49 PM

Another visit to South Africa and more amazing night skies despite a full moon. We took them just before it rose! The first three are taken at Grootkolk and Bitterpan wilderness camps in the Kgalagadi TP and the forth is at Nieuwoudtville in the Northern Cape. That night the moon created a lot of light just before it rose and the sun had not set long either.

 

The artificial lights from the units made a big difference to the colours in the sky. The halation in the first confused us but we finally realised it was caused by Venus which was incredibly bright. Pen

 

 20160918-_DSC6359.jpg

 

20160922-_DSC6390.jpg

 

20160920-_DSC6383.jpg

 

20160928-_DSC6459.jpg


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#226 Morkel Erasmus

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Posted 27 December 2016 - 10:29 PM

Two attempts from our recent trip through Namibia.

 

This one from the Namib Rand Reserve...

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#227 Morkel Erasmus

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Posted 27 December 2016 - 10:34 PM

Quiver tree forest, Keetmanshoop...

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#228 Peter Connan

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Posted 01 January 2017 - 10:50 AM

Both are stunning Morkel

I presume the moon was not quite dark?


Ek oefen skelm.

#229 penolva

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Posted 26 March 2017 - 01:55 PM

Villarrica Volcano and Milky Way. Pucon Chile.

 

20170305-_DSC6874.jpg


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#230 Peter Connan

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Posted 23 April 2017 - 06:56 AM

Welwitschia Mirabilis, the living fossil, andf a distant thunderstorm.

 

South of Brandberg, Namibia

 

Nikon D750 + Tamron 15-30mm f2.8, 30 seconds @f2.8 and ISO 4000

 

WelwitchiaODP.jpg

 

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

 

We were supposed to spend the night camping in or near the Messum Crater. The "road" is a nightmare of corrugations, up to 20-30m wide in places as people try to miss the corrugations.

 

About 20km from Messum, I got a panicky radio call from my friend: "My car is overheating". I turned back immediately, and found that his radiator had no water in. Working in a light rain, we removed it, re-filled it but found nothing wrong. We re-installed it, re-filled it again and started it. That's when we found the leak. Radiator out again, and Pratley Steel epoxy to fix the leak (no self-driver should ever leave home without this stuff). We waited an hour, and re-fitted the radiator, but by now the sun was close to setting. Thus we drove a few kilometers just to check the repair, and then pitched camp right in the middle of the "road" as the sun set. 


Edited by Peter Connan, 23 April 2017 - 06:58 AM.

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Ek oefen skelm.

#231 pault

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Posted 26 April 2017 - 12:08 AM

Very cool shot Peter - bonus points for the story.
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Waiting again... for the next time again


#232 Peter Connan

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Posted 27 April 2017 - 11:28 AM

Thanks @pault


Edited by Peter Connan, 27 April 2017 - 11:28 AM.

Ek oefen skelm.

#233 AKChui

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Posted 29 April 2017 - 07:42 PM

In March I attended a landscape photography workshop in Namibia, and one of the iconic images we worked on was the Milky Way with a Quiver Tree in the foreground.  The location was the Fish River Canyon, in the far south, near the border with South Africa.  
 

MilkyWay_Q6A0778Lpp.jpg

 

The Milky Way can be elusive for Alaskan photographers—during the dark of winter it is low in the southern horizon and hard to work into a decent composition; during the summer when it is higher in the sky, there is no darkness to see and photograph it.  Besides, it’s a just another good excuse for another trip to Africa!

For those interested, my gear:  Canon 5D Mark IV, a Rokinon/Samyang 14mm f2.8 lens, on a sturdy Arca Swiss ballhead/Feisol carbon fiber tripod combination.  The exposure was 30 seconds at f2.8, with an ISO of 3200.  

After returning I found an article on Peta Pixel which went into depth of the physics of getting sharp stars for the most common digital cameras.  The shutter speed for my camera/lens combination should have been 18 seconds, witnessed by the egg shapes of some of the stars in my photo…darn, another reason to return!


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"I always thought good photos were like good jokes--if you have to explain it, it just isn't that good"  (Anonymous)


#234 Peter Connan

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Posted 01 May 2017 - 01:50 PM

Beautiful!


Ek oefen skelm.

#235 Peter Connan

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Posted 04 May 2017 - 04:10 AM

There seems to be a surfeit of quiver trees showing up here at the moment. Here is a humble effort from me.

This one is from Blutkuppe, about 100km east of Swakopmund, Namibia.

Koker3ODP.jpg

Nikon D750 & Tamron 15-30mm f2.8 @15mm & f2.8, 30 seconds @ISO400 with exposure lifted in post. Lighting via an LED head-torch reflected out of the palm of my hand.

__________________________________________________________________________

The area this was taken in is a national park, and there is some gane around (although not much as the area is very barren). I was sitting there in the darkness imagining a lion or leopard stalking me when i heard a footstep behind me.

Swinging around with torch in hand, it turned out to be a Cape Fox, about 5 yards behind me. My best sighting ever of this elusive little insect-eater.
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Ek oefen skelm.

#236 AKChui

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Posted 04 May 2017 - 05:52 AM

Another great shot!  I was going to ask how you got away with ISO 400, but then I noticed in your previous post an ISO of 4000, so expect it's a typo? 


"I always thought good photos were like good jokes--if you have to explain it, it just isn't that good"  (Anonymous)


#237 Peter Connan

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Posted 04 May 2017 - 03:14 PM

Thank you  @AKChui

 

Not a typo.

Some current Nikon and Sony sensors, among them that of the D750 (which is what I use), are virtually ISO-invariant. If you have not heard the term before, essentially it means that, if you take two images, one at the "correct" ISO, and the other under-exposed at a much lower ISO (but with the other exposure variables un-changed), and then lift the exposure to the same level in post-processing, the resulting noise in an image is pretty much identical.

 

The advantage of doing this is that you can lift exposure selectively, and thus in areas where you leave the exposure darker, you end up with lower noise levels. The difference is slight, but I think still worth the effort.

 

However, I always take a few test shots at higher ISO to evaluate the composition and focus, and the Welwitschia image was one of those test exposures.


Edited by Peter Connan, 04 May 2017 - 03:15 PM.

Ek oefen skelm.

#238 AKChui

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Posted 05 May 2017 - 04:00 AM

@Peter Connan, thanks for the explanation!

I’ve heard of ISO-invariance, but I guess I didn’t grasp its use in real life situations.  But by using Canon cameras, I guess it really doesn’t apply to me!  Apparently Canon sensors are not ISO-invariant, although I unknowingly approached the subject here on ST when I posted an accidentally underexposed leopard photo brought back to life in post-processing.  And had to fight sensor noise in the process (when viewing larger sizes).


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"I always thought good photos were like good jokes--if you have to explain it, it just isn't that good"  (Anonymous)


#239 Peter Connan

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Posted 05 May 2017 - 01:34 PM

@AKChui, exposure can be lifted in any digital photo. And increased noise will always result from the above.

 

This ISO invariance is not a "magic bullet". Getting the correct exposure at a low ISO will always result in the  best quality photo.

 

Thus it is only useful in situations where, for whatever reason, you can't increase shutter speed or widen aperture to the point where a low ISO will give correct exposure.

 

However, I did read an article on the subject that reckons that the best ISO for star photos with Canon cameras is around 1600. Might be worth trying next time you have an opportunity?

 

Funnily enough, some of the latest Nikon sensors (D5 and D500) are not ISO invariant at all...


Edited by Peter Connan, 05 May 2017 - 01:35 PM.

Ek oefen skelm.

#240 KaingU Lodge

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Posted 10 May 2017 - 09:39 AM

The main area this morning at 05:30.  ISO 1600 and 20 secs.  I am unsure of aperture due to the manual Samyang 14mm, it was closed down a bit though.  Canon 1D Mkiv 

 

 

 

Insomnia-1-of-1.jpg


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