Dynamic Range and Noise

[Black Pearl]

Really interesting article with some (possibly) surprising conclusions:

https://petapixel.com/2017/03/22/find-best-iso-astrophotography-dynamic-range-noise/

[ChrisLumix]

Very surprising! From that, one would expect camera software writers to program for the maximum signal at all times, especially in P mode. Perhaps some do understand this, and that would certainly deliver less noisy pictures on the face of it. The only flaw in the logic is that more the signal increases (via wider apertures or slower shutter speeds) then the ISO should REDUCE to compensate.

[fuzzyedges]

Very interesting 

understood everything until I read the comments below now I know nothing except ISO is from  greek so we all understand what it means , dont we 

[roicead]

when i was first starting out with nightscapes some mystic man in the tetons who i just happened to run into told me to bump up my iso to 3200 instead of trying to shoot at iso 200.  i thought it was a stupid idea, but i obligingly shot off a few rounds with a high iso.  found out in the hotel room later that he wasn't full of crap.  he told me the sensor doesn't heat up as much with the shorter shutter speed, a hotter sensor causes more noise.  here's the image i made the night i met him around oxbow bend.  it was the first milky way shot that i was happy with.

[Clicker]

Proof of the pudding eh ..

thats a cracking Milky Way Beth.

 I must try some nightscapes later this year...  It's not  something I have ever attempted...  

[roicead]

35 minutes ago, Clicker said:

Proof of the pudding eh ..

thats a cracking Milky Way Beth.

 I must try some nightscapes later this year...  It's not  something I have ever attempted...  

thanks.  it's so easy you'll be wondering why you've never tried before.

[kev7d]

I have to say I tend not too think about noise too much these days.  I used to think I had to keep my camera on the lowest ISO setting.  How liberating it was when I started to use higher ISO.  It brought me a load of new opportunities and freedom.  

[ChrisLumix]

On 25 March 2017 at 14:41, kev7d said:

I have to say I tend not too think about noise too much these days.  I used to think I had to keep my camera on the lowest ISO setting.  How liberating it was when I started to use higher ISO.  It brought me a load of new opportunities and freedom.  

It was no different in film days. Newbies and manufacturers went for the "least grain" option at all times. However, the best photographers used film grain to great creative effect when the situation called for it. Especially in B&W photography.

[Clicker]

They  had a reall dynamism and intensity  those  grainy black and whites ...