Even though we ARE Nikon lovers,we are NOT affiliated with Nikon Corp. in any way.

English German French

Sign up Login
Home Forums Articles Galleries Recent Photos Contest Help Search News Workshops Shop Upgrade Membership Recommended
members
All members Wiki Contests Vouchers Apps Newsletter THE NIKONIAN™ Magazines Podcasts Fundraising

Yeah.....but.....Low light shooters beware!

bclaff

Vancouver (WA USA not BC Canad, US
9691 posts

Click to send email to this author Click to send private message to this author

"RE: Yeah.....but.....Low light shooters beware!"

bclaff Awarded for multiple contributions for the Resources Registered since 26th Oct 2004
Tue 21-Feb-12 02:53 PM

Filip,

Thank you for the explanation. Ken Rockwell on his web seems to indicate that by downsampling in post processing, the noise get eliminated effectively the same as if you had a lower MP camera. So my question is:

1. Is his statement correct ?


His statement is essentially correct but he is not careful about his choice of words and you have changed the meaning.

We sometimes "downsample" to make images from two cameras the same size for a fair comparison.
Downsampling doesn't "cancel" noise but it does concentrate the signal and noise from multiple pixels into one. Signal concentrates faster than noise so combining pixels always makes for a higher quality combined pixel.
What gives the pixel it's quality is how much light originally went into it, concentrated or not.

2. By setting up camera at smaller JPEG size (ie 4256 x 2832), is it the same effect as if I was down sampling (resizing) in post processing in Photoshop or aperture.

No!
Your smaller pixels will not be the same quality as pixels of the same size that were "concentrated" from a larger area.
Remember you collected less light to make the smaller JPEG pixel than the amount of light that got squeezed into the downsampled pixel.

Regards,
Bill

Visit me at Photons To Photos

This is a hot, active topic! Yeah.....but.....Low light shooters beware! [View all] , hollingwD80 , Tue 07-Feb-12 01:55 PM
Subject
ID
Reply message RE: Yeah.....but.....Low light shooters beware!
1
Reply message RE: Yeah.....but.....Low light shooters beware!
2
     Reply message RE: Yeah.....but.....Low light shooters beware!
34
     Reply message RE: Yeah.....but.....Low light shooters beware!
123
Reply message RE: Yeah.....but.....Low light shooters beware!
3
Reply message RE: Yeah.....but.....Low light shooters beware!
4
Reply message RE: Yeah.....but.....Low light shooters beware!
5
Reply message RE: Yeah.....but.....Low light shooters beware!
8
Reply message RE: Yeah.....but.....Low light shooters beware!
6
Reply message RE: Yeah.....but.....Low light shooters beware!
7
     Reply message RE: Yeah.....but.....Low light shooters beware!
9
     Reply message RE: Yeah.....but.....Low light shooters beware!
10
          Reply message RE: Yeah.....but.....Low light shooters beware!
11
          Reply message RE: Yeah.....but.....Low light shooters beware!
14
               Reply message RE: Yeah.....but.....Low light shooters beware!
16
                    Reply message RE: Yeah.....but.....Low light shooters beware!
17
          Reply message RE: Yeah.....but.....Low light shooters beware!
23
               Reply message RE: Yeah.....but.....Low light shooters beware!
26
               Reply message RE: Yeah.....but.....Low light shooters beware!
27
               Reply message RE: Yeah.....but.....Low light shooters beware!
36
                    Reply message RE: Yeah.....but.....Low light shooters beware!
50
     Reply message RE: Yeah.....but.....Low light shooters beware!
12
Reply message RE: Yeah.....but.....Low light shooters beware!
13
Reply message RE: Yeah.....but.....Low light shooters beware!
15
Reply message RE: Yeah.....but.....Low light shooters beware!
18
Reply message RE: Yeah.....but.....Low light shooters beware!
19
Reply message RE: Yeah.....but.....Low light shooters beware!
21
Reply message RE: Yeah.....but.....Low light shooters beware!
22
Reply message RE: Yeah.....but.....Low light shooters beware!
91
Reply message RE: Yeah.....but.....Low light shooters beware!
20
Reply message RE: Yeah.....but.....Low light shooters beware!
24
     Reply message RE: Yeah.....but.....Low light shooters beware!
25
Reply message RE: Yeah.....but.....Low light shooters beware!
28
Reply message RE: Yeah.....but.....Low light shooters beware!
29
Reply message RE: Yeah.....but.....Low light shooters beware!
30
Reply message RE: Yeah.....but.....Low light shooters beware!
32
Reply message RE: Yeah.....but.....Low light shooters beware!
38
     Reply message RE: Yeah.....but.....Low light shooters beware!
39
     Reply message RE: Yeah.....but.....Low light shooters beware!
40
          Reply message RE: Yeah.....but.....Low light shooters beware!
41
          Reply message RE: Yeah.....but.....Low light shooters beware!
44
               Reply message RE: Yeah.....but.....Low light shooters beware!
47
                    Reply message RE: Yeah.....but.....Low light shooters beware!
48
                    Reply message RE: Yeah.....but.....Low light shooters beware!
52
                         Reply message RE: Yeah.....but.....Low light shooters beware!
55
                              Reply message RE: Yeah.....but.....Low light shooters beware!
57
                              Reply message RE: Yeah.....but.....Low light shooters beware!
60
                    Reply message RE: Yeah.....but.....Low light shooters beware!
54
                         Reply message RE: Yeah.....but.....Low light shooters beware!
62
                         Reply message RE: Yeah.....but.....Low light shooters beware!
63
                         Reply message RE: Yeah.....but.....Low light shooters beware!
114
                              Reply message RE: Yeah.....but.....Low light shooters beware!
115
     Reply message RE: Yeah.....but.....Low light shooters beware!
61
     Reply message RE: Yeah.....but.....Low light shooters beware!
124
Reply message RE: Yeah.....but.....Low light shooters beware!
33
Reply message RE: Yeah.....but.....Low light shooters beware!
83
Reply message RE: Yeah.....but.....Low light shooters beware!
31
Reply message RE: Yeah.....but.....Low light shooters beware!
35
Reply message RE: Yeah.....but.....Low light shooters beware!
37
     Reply message RE: Yeah.....but.....Low light shooters beware!
42
          Reply message RE: Yeah.....but.....Low light shooters beware!
77
               Reply message RE: Yeah.....but.....Low light shooters beware!
80
               Reply message RE: Yeah.....but.....Low light shooters beware!
126
Reply message RE: Yeah.....but.....Low light shooters beware!
43
Reply message RE: Yeah.....but.....Low light shooters beware!
45
     Reply message RE: Yeah.....but.....Low light shooters beware!
46
          Reply message RE: Yeah.....but.....Low light shooters beware!
53
               Reply message RE: Yeah.....but.....Low light shooters beware!
56
                    Reply message RE: Yeah.....but.....Low light shooters beware!
58
Reply message RE: Yeah.....but.....Low light shooters beware!
49
Reply message RE: Yeah.....but.....Low light shooters beware!
51
     Reply message RE: Yeah.....but.....Low light shooters beware!
59
Reply message RE: Yeah.....but.....Low light shooters beware!
64
Reply message RE: Yeah.....but.....Low light shooters beware!
65
Reply message RE: Yeah.....but.....Low light shooters beware!
66
Reply message RE: Yeah.....but.....Low light shooters beware!
67
Reply message RE: Yeah.....but.....Low light shooters beware!
68
     Reply message RE: Yeah.....but.....Low light shooters beware!
69
     Reply message RE: Yeah.....but.....Low light shooters beware!
70
          Reply message RE: Yeah.....but.....Low light shooters beware!
72
     Reply message RE: Yeah.....but.....Low light shooters beware!
118
          Reply message RE: Yeah.....but.....Low light shooters beware!
119
          Reply message RE: Yeah.....but.....Low light shooters beware!
120
               Reply message RE: Yeah.....but.....Low light shooters beware!
125
                    Reply message RE: Yeah.....but.....Low light shooters beware!
127
                         Reply message RE: Yeah.....but.....Low light shooters beware!
129
Reply message RE: Yeah.....but.....Low light shooters beware!
71
Reply message RE: Yeah.....but.....Low light shooters beware!
74
Reply message RE: Yeah.....but.....Low light shooters beware!
73
     Reply message RE: Yeah.....but.....Low light shooters beware!
75
     Reply message RE: Yeah.....but.....Low light shooters beware!
76
     Reply message RE: Yeah.....but.....Low light shooters beware!
78
          Reply message RE: Yeah.....but.....Low light shooters beware!
79
Reply message RE: Yeah.....but.....Low light shooters beware!
81
Reply message RE: Yeah.....but.....Low light shooters beware!
82
Reply message RE: Yeah.....but.....Low light shooters beware!
85
Reply message RE: Yeah.....but.....Low light shooters beware!
84
     Reply message RE: Yeah.....but.....Low light shooters beware!
86
          Reply message RE: Yeah.....but.....Low light shooters beware!
87
               Reply message RE: Yeah.....but.....Low light shooters beware!
88
               Reply message RE: Yeah.....but.....Low light shooters beware!
89
                    Reply message RE: Yeah.....but.....Low light shooters beware!
90
                         Reply message RE: Yeah.....but.....Low light shooters beware!
92
                              Reply message Fact check
93
Reply message RE: Yeah.....but.....Low light shooters beware!
94
Reply message RE: Yeah.....but.....Low light shooters beware!
95
Reply message RE: Yeah.....but.....Low light shooters beware!
96
     Reply message RE: Yeah.....but.....Low light shooters beware!
97
          Reply message RE: Yeah.....but.....Low light shooters beware!
98
               Reply message RE: Yeah.....but.....Original poster here....
99
               Reply message RE: Yeah.....but.....Original poster here....
100
               Reply message RE: Yeah.....but.....Original poster here....
101
                    Reply message RE: Yeah.....but.....Original poster here....
102
                    Reply message RE: Yeah.....but.....Original poster here....
103
                         Reply message RE: Yeah.....but.....Original poster here....
105
                              Reply message RE: Yeah.....but.....Original poster here....
106
                                   Reply message RE: Yeah.....but.....Original poster here....
108
               Reply message RE: Yeah.....but.....Original poster here....
104
               Reply message RE: Yeah.....but.....Original poster here....
107
                    Reply message RE: Yeah.....but.....Original poster here....
109
                         Reply message RE: Yeah.....but.....Original poster here....
132
                              Reply message RE: Yeah.....but.....Original poster here....
133
                                   Reply message RE: Yeah.....but.....Original poster here....
134
               Reply message RE: Yeah.....but.....Original poster here....
110
               Reply message RE: Yeah.....but.....Original poster here....
130
                    Reply message RE: Yeah.....but.....Original poster here....
131
               Reply message RE: Yeah.....but.....Original poster here....
116
               Reply message RE: Yeah.....but.....Low light shooters beware!
111
                    Reply message RE: Yeah.....but.....Low light shooters beware!
112
                    Reply message RE: Yeah.....but.....Low light shooters beware!
117
                    Reply message RE: Yeah.....but.....Low light shooters beware!
113
                         Reply message RE: Yeah.....but.....Low light shooters beware!
121
                              Reply message RE: Yeah.....but.....Low light shooters beware!
122
                                   Reply message RE: Yeah.....but.....Low light shooters beware!
128
Reply message RE: Yeah.....but.....Low light shooters beware!
135
Reply message RE: Yeah.....but.....Low light shooters beware!
136
     Reply message RE: Yeah.....but.....Low light shooters beware!
137