Following on from a discussion on another thread
http://www.diyaudio.com/forums/showthread.php?s=&threadid=77054
I was just wondering what peoples thoughts were on standardising picture settings on our DIY PJs
I know that home PJ’s aren’t as bright as commercial ventures and many posts of the pictures presented are not readily comparable to one another. I was thinking that settings such as .5s exposure, 100 ISO and f2.8 should be deemed a realistic view of what’s being projected onto a screen.
So, I carried out a little experiment and took ten snaps of the same scene with different exposure levels (same iso 100, f2.8) to see if the exposure time makes much of a difference. I resized the pics with Microsoft office picture manager to 640 x 480. If you wanna check the settings I used to confirm for yourself u can download a free prog called easyexif.
For what it’s worth the light levels detected by my eyes (personally 🙂) are the same as pic 1
Pic 1 exposure time 0.1sec
Pic 2 exposure time 0.125 sec
Pic 3 exposure time 0.2 sec
Pic 4 exposure time 0.25 sec
Pic 5 exposure time 0.333 sec
Pic 6 exposure time 0.5 sec
Pic 7 exposure time 1 sec
Pic 8 exposure time 1.6 sec
Pic 9 exposure time 2 sec
Pic 10 exposure time 3 sec
The lux reading for ambient light in the pics is approx 28
Pics to follow:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=77054
I was just wondering what peoples thoughts were on standardising picture settings on our DIY PJs
I know that home PJ’s aren’t as bright as commercial ventures and many posts of the pictures presented are not readily comparable to one another. I was thinking that settings such as .5s exposure, 100 ISO and f2.8 should be deemed a realistic view of what’s being projected onto a screen.
So, I carried out a little experiment and took ten snaps of the same scene with different exposure levels (same iso 100, f2.8) to see if the exposure time makes much of a difference. I resized the pics with Microsoft office picture manager to 640 x 480. If you wanna check the settings I used to confirm for yourself u can download a free prog called easyexif.
For what it’s worth the light levels detected by my eyes (personally 🙂) are the same as pic 1
Pic 1 exposure time 0.1sec
Pic 2 exposure time 0.125 sec
Pic 3 exposure time 0.2 sec
Pic 4 exposure time 0.25 sec
Pic 5 exposure time 0.333 sec
Pic 6 exposure time 0.5 sec
Pic 7 exposure time 1 sec
Pic 8 exposure time 1.6 sec
Pic 9 exposure time 2 sec
Pic 10 exposure time 3 sec
The lux reading for ambient light in the pics is approx 28
Pics to follow:
As I mentioned in the other thread , you have to remember that ALL cameras are different.
I can take the same exact picture 10 times with either of my camera and get 10 different looking pics, I know I've done it.
Ad I can also take 2 pics with my 2 different cameras at the same settings and get2 TOTALLY different looking pics, I've done that several times also.
All cameras are not made equal.
I can take the same exact picture 10 times with either of my camera and get 10 different looking pics, I know I've done it.
Ad I can also take 2 pics with my 2 different cameras at the same settings and get2 TOTALLY different looking pics, I've done that several times also.
All cameras are not made equal.
hailrazer said:
I don't think you can make a statement like that without backing it up 😉
Did u use the same f value (aperture) settings, if not that's why you'd see a huge difference in the pics.
Have you two comparison jpegs of the same scene that we can take a look at?
The problem may be that you've your camera set to auto which will cause it to open and close the aperture. Set everything to manual and try that, it'll yield much more consistent results.
If you could post two pictures of the same scene with the two cameras set on the same settings that’d be great.
If you could post two pictures of the same scene with the two cameras set on the same settings that’d be great.
Well I don't have the time or patience anymore to try to convince people of these type of things.
People will believe what they want to believe.
If you have 2 cameras try it and you will see there will most likely be varying brightness , color, etc.
People will believe what they want to believe.
If you have 2 cameras try it and you will see there will most likely be varying brightness , color, etc.
I might agree for somepart of that, but I think it will show off the essence of if a photo is really dark, or if the corners are dark etc. If someone uses over 1 second, it looks perfect, but might be dark in reality. Using the .5s will give a fairly base line we can go by I believe. So yes, maybe the pics will look different in color and stuff, but I think we can compare easier, than someone using .5 and someone else using 2 seconds.
2 different cameras with the same settings (iso, aperture, exposure...) will give very very similar results. Even between cameras with the same settings at most there's only a 5% deviance. The electronic photographic industry has a standard that it has to adhere to and digital cameras have to be calibrated to within those set limits.
Seriously, all you'd have to do is post two shots of the same scene with your different cameras (using the same settings). It wouldn't take 5 mins to try and post the results.
Anyway, as Miedosoracing has quite correctly stated, You can't compare .5 sec exposure with 2 sec exposure. The brightness levels in the 2 sec exposure will be far far brighter than the 0.5 sec no matter what camera you use (assuming the iso and f values are the same). That's why if we keep similar settings we can fairly compare similar results.
Seriously, all you'd have to do is post two shots of the same scene with your different cameras (using the same settings). It wouldn't take 5 mins to try and post the results.
Anyway, as Miedosoracing has quite correctly stated, You can't compare .5 sec exposure with 2 sec exposure. The brightness levels in the 2 sec exposure will be far far brighter than the 0.5 sec no matter what camera you use (assuming the iso and f values are the same). That's why if we keep similar settings we can fairly compare similar results.
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