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  1. Galleries
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  4. » Untitled Photo

 
Untitled Photo...

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Untitled Photo sent on September 25, 2011 (17:35) by Luigi Monti. 13 comments, 920 views.

1/2500 f/3.5, ISO 100,

Nikon D80, 18-105mm @18mm, f/3.5, scatto singolo da 902", iso100, cavalletto.. E' la prima foto alle stelle che riesco a fare, quindi ogni vostra critica o consiglio mi sarà di grandissimo aiuto per migliorare..





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avatarsupporter
sent on September 25, 2011 (17:43) | This comment has been automatically translated (show/hide original)

Hello everyone, after about 4 outputs empty this is the first time that "I can" to photograph the stars ..
In this case, I made a single shot from 15 minutes to f3.5 and ISO 100, as you can see the cross is illuminated from below by some yellow spots and the front part thereof, is made up of neon blue that gave the Snap these lighting effects ..
The result does not satisfy me fully, but compared to the first output is already a step ahead so I need all your suggestions and all your criticisms to improve and to finally be able to come up with something interesting ;)

avatarsenior
sent on September 25, 2011 (20:33) | This comment has been automatically translated (show/hide original)

The picture is too light, shutter speeds shorter you could better manage artificial light

avatarjunior
sent on September 25, 2011 (21:24) | This comment has been automatically translated (show/hide original)

You should use the sum of many photos.
At first I did myself a single photo (I came to make a nearly 3 hours) but the results were very poor, so I tried to do a lot of pictures in a row of 10-15sec ISO400 one o'clock at room temperature and then add them PP: the results have improved considerably.

My advice is to use the triad OPEN / TIME / ISO to run a slightly underexposed photo of the main subject (of the order of -1 / 3, -1 / 4 stop) and then perform a lot of pictures all with the same exposure to to reach a sufficient time to allow the stars to leave the "strips".
One tip is that between a photo and the other should spend as little time as possible to avoid having the dotted lines of the stars: so no noise reduction on.
In addition, take a couple of pictures, always with the same exposure, with the cap on the lens before you start taking pictures in series and at the end: in this way you have the dark-frame can subtract PP

avatarsupporter
sent on September 25, 2011 (22:35) | This comment has been automatically translated (show/hide original)

Thank you guys! ;-)
A question definitely stupid, but I need to understand better: sottoespongo if the photo does not run the risk of "getting lost" the brightness of the stars? ..

avatarjunior
sent on September 26, 2011 (1:59) | This comment has been automatically translated (show/hide original)

Sottoesponi the individual shows why the final picture is becoming a little more brightness and everyway, to respond to your questions, the brightness of the stars is less influential, and you will find traces of stars that you could not even see with the naked eye: you always find a few lines across (even thin) left by some artificial satellite ;-)
In addition, a number of circles over the top for me lose a bit of charm, a photo is more beautiful deep sky with thousands of dots, that a photo with a subject and thousands of circles behind (my modest opinion eh).

Obvious is that you can not shoot at 1/50sec ... the triad + / - everything is right for 4/60sec/400iso.
You do not make a disproportionate number of photos (and even do simple calculations with time) and you have a fairly low noise.
Then should play on time and leave open and iso constant to adjust the best exposure.

Let me give you an example (not me nand desire the author):
Here, in my opinion, they have made some errors:
1) The poses are not consecutive and is reflected by the fact that the lines are dashed
2) 800ISO ... I would have done 60sec/400iso, the result would be the same with less noise and fewer photos to be added on PP

avatarsupporter
sent on September 26, 2011 (9:24) | This comment has been automatically translated (show/hide original)

Thank you Falappa, you're giving me a great help! ;)
One more thing then I'll stop break you, you told me to turn off the noise reduction, I have to remove both those on long exposures, is that the high iso?. And in doing so to 60 "ISO 400 is not likely to have more noise than stars?. I have a Nikon D80 in terms of noise that is made pretty bad: D

avatarjunior
sent on September 26, 2011 (12:30) | This comment has been automatically translated (show/hide original)

I do not know the D80 (and nikon in general), cmq that on long exposures sure: The machine takes a picture and then create a darkframe using the same exposure time and then interspersed with photos and would not continue.
As for the high ISO that, when you add the picture noise is greatly reduced, especially if you do a lot (in the order of hundreds), then it is useless to keep my approximate arrival, especially if you make a couple of darkframe at the beginning and end of the series.

But at this point you need to do a bit of evidence: with the 5DMKII to 400ISO noise is almost non-existent, so it makes sense that reduce face him again, I also noticed that the batteries last longer.

In addition, with the reduction 1600ISO and active, I found some photos where the stars were canceled because mistaken for noise in the picture later reappeared and when you went to add the wheels had broken.

For this I suggest you tenages lower the ISO, remove noise reduction, and lengthen the time to experiment. After a few sleepless nights you'll find the right setting. ;-)

avatarsupporter
sent on September 26, 2011 (13:26) | This comment has been automatically translated (show/hide original)

All right, you've been very clear and very helpful, thanks! :-)
At this point I only hope that this evening there is a clear sky, so start now to do some testing ;-)

avatarsupporter
sent on September 27, 2011 (9:51) | This comment has been automatically translated (show/hide original)

Last night I went back to do some shooting .. I wrote a couple of lines on the evening in my profile .. Thanks again ;-) aid

avatarjunior
sent on September 27, 2011 (15:30) | This comment has been automatically translated (show/hide original)

Thanks to Luigi and Falappa for the interesting exchange of information for a enofita like me will be very useful!
ps. Luigi me this photo of yours already seems a dream!
:)

avatarsupporter
sent on September 27, 2011 (15:50) | This comment has been automatically translated (show/hide original)

Piebo Hello, thanks for the compliment ;)
Yesterday I tried to put into practice the advice of Falappa and if it were not for the clouds shooting would have been much better than this ..
Account to try again this evening, at the time help me: D

avatarjunior
sent on September 30, 2011 (17:54) | This comment has been automatically translated (show/hide original)

small clarification for Falappa

"2) 800ISO ... I would have done 60sec/400iso, the result would be the same with less noise and fewer photos to be added on PP"

I also would have preferred to take 400, but the canon 550d allows maximum exposure of 30 seconds if you do not consider the bulb, the multi-shot run up to 10 shots at the end of which risk is often to move the tripod to restart the burst when I am on uneven soil, without the remote I could not do better.

greetings
p


avatarjunior
sent on September 02, 2013 (16:30) | This comment has been automatically translated (show/hide original)



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