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Nikon DSLR Cameras
D3100
Looking for some help with Noise/hot pixels
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<blockquote data-quote="blueridge142" data-source="post: 341024" data-attributes="member: 29705"><p>Hello all, </p><p></p><p>I was hoping I could get some help in figuring out what is going on here with my photos? I am very new to photography. I am trying to take some decent photos of the night sky, but they keep coming out very noisy and/or with hot pixels. I bought my Nikon D3100 used at the beginning of july , but it only had about 2500 actuation's on it. I know that with this beginner camera I should not expect results like a pro, but the photos are very grainy and seem to have a lot of hot pixels. I have read to take care of this problem in post processing but I seem to have trouble doing this. I downloaded a hot pixel mapping program for post processing but it does not seem to think I have hot pixels. I took a long exposure photo at a high iso with my lens cap on for this program to map the pixels, I will provide that photo so the results can be viewed and maybe some suggestions can be given. Thank you in advance for any assistance with this.</p><p></p><p>P.S. I just re read this post, and just to make it clear I am asking for help with determining whether or not if I have a bad hot pixel issue or bad noise issue.....................thank you again</p><p></p><p>here is the Exif from the raw photo</p><p> exif.make=Nikon;</p><p>exif.model=D3100;</p><p>exif.artist=;</p><p>exif.date_time=2014:08:06 01:46:18;</p><p>exif.date_time_original=2014:08:06 01:46:18;</p><p>exif.date_time_digitized=2014:08:06 01:46:18;</p><p>exif.exposure_time=25/1 sec;</p><p>exif.ISO_speed=ISO-1600;</p><p>exif.f_number=f/3.5;</p><p>exif.focal_length=18;</p><p>exif.color_space=1 (sRGB);</p></blockquote><p></p>
[QUOTE="blueridge142, post: 341024, member: 29705"] Hello all, I was hoping I could get some help in figuring out what is going on here with my photos? I am very new to photography. I am trying to take some decent photos of the night sky, but they keep coming out very noisy and/or with hot pixels. I bought my Nikon D3100 used at the beginning of july , but it only had about 2500 actuation's on it. I know that with this beginner camera I should not expect results like a pro, but the photos are very grainy and seem to have a lot of hot pixels. I have read to take care of this problem in post processing but I seem to have trouble doing this. I downloaded a hot pixel mapping program for post processing but it does not seem to think I have hot pixels. I took a long exposure photo at a high iso with my lens cap on for this program to map the pixels, I will provide that photo so the results can be viewed and maybe some suggestions can be given. Thank you in advance for any assistance with this. P.S. I just re read this post, and just to make it clear I am asking for help with determining whether or not if I have a bad hot pixel issue or bad noise issue.....................thank you again here is the Exif from the raw photo exif.make=Nikon; exif.model=D3100; exif.artist=; exif.date_time=2014:08:06 01:46:18; exif.date_time_original=2014:08:06 01:46:18; exif.date_time_digitized=2014:08:06 01:46:18; exif.exposure_time=25/1 sec; exif.ISO_speed=ISO-1600; exif.f_number=f/3.5; exif.focal_length=18; exif.color_space=1 (sRGB); [/QUOTE]
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Nikon DSLR Cameras
D3100
Looking for some help with Noise/hot pixels
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