Finally I bought a new camera. Actually I just wanted a few specific features: changeable objective, raw file format and the camera should be compact. I found tons of cameras which might match those three criteria in the end I decided to go for the Sony Alpha 6300.
I’ve just checked what different ISO values are doing (this is my first cam) by taking a photo at all available ISO values and cropping to the same region in each picture. I’ve just used the raw output image converted to png, no additional filtering. The optical zoom was at max.
|iso 100||iso 200||iso 320|
|iso 500||iso 800||iso 1000|
|iso 1250||iso 1600||iso 2000|
|iso 2500||iso 3200||iso 4000|
|iso 5000||iso 6400||iso 8000|
|iso 10000||iso 12800||iso 16000|
|iso 20000||iso 25600||iso 32000|
|iso 40000||iso 51200|
For me this is pretty interesting. Looks like high ISO = more sharp as well as more noise. Seems 100-1000 is good, 1250-4000 is okay, 5000-8000 might still be acceptable. If I understood the guides correctly, low iso should be used in bright days / outside and you’re going higher with the ISO setting to compensate bad light environment. The above photos has been taken outside and I believe it was a bright day.
Now, the above pictures are pretty dark; I’ve just opened the picture in gimp which uses ufraw to convert it. If I do not set anything and just import it I get:
If I do use dcraw binary though, I get:
Both pictures are ISO 100. Though dcraw seems to do some auto white correction.
I think I love this cam 😀