Drayken
Offline
• • •
Upload & Sell: Off
|
 p.1 #16 · Direct ISO comparison 7D and 20D | |
Well, my father came over, and we shot at ISO 400,640,800,1250,1600,3200. We used a tripod, and used AV mode. Set +1/3 exp bias. Results:
-1st, the 5.6 RAW did make things slightly better, across the board.
-2nd, every shot we compared, my father's was slightly exposed brighter, and slightly less noise. (both being "slightly") So, I was going back and forth, wondering why. Then finally, I noticed our shutter speeds. His was ALWAYS one step slower than mine. Example: ISO 800 = 1/20 vs 1/25 and ISO 1600 = 1/30 vs 1/50. So, I assume even this slight of a difference in shutter speed, would affect exposure and noise. I am not sure why they differed. Maybe how we were standing, or maybe just the difference in the cameras themselves. I sure wish I would have set them in manual mode, but since all the shots differed by one step, I assume that is why I saw more noise.
-3rd, I took both camera ISO 800 files, resized to 360dpi and printed. I know that I never cared for printing my 20D ISO 800 files without using noiseware. I did not sharpen, nor use noiseware, and I will be honest, I would have accepted them "as is". They were very sharp, and noise was not as noticeable. So good in fact, that I then ran through noiseware, then nik sharpener, and reprinted. Hardly any difference at all. That is how sharp they were to begin with.
I decided to keep the camera. I cannot see my father and I both, having poor noise. It is just a huge jump from our 20D and 30D cameras. I have to get used to seeing them on the monitor at larger sizes, while I edit.
|
Below are the 1600 samples, and a link to all of them.