Autofocus Question

[WayneF]

Increasing camera exposure shifts the histogram data up, to the right, literally.
Increasing ISO shifts the histogram data up, to the right, literally.
Increasing photo editor exposure shifts the histogram data up, to the right, literally.

Not much difference, but last two cases do make the noise brighter too. Best to have more than 8 bits though.

 

[J-see]

I normalized the + and -1 EV to see the difference in noise between all three.

I didn't shoot much high ISO before and wasn't aware of how to improve it but now I do, I pick a higher ISO much quicker and overexpose a bit. If I don't forget that.

The difference in f/ isn't dramatic with this lens. She's about as good all through the range. But when I use my 70-300mm it is different. When I put the TC between, it is again different. The more I stop those down, the worse it gets.

 

[J-see]

I checked the D3300. From ISO 3200 I need to overexpose 2 stops to get the best result.





Most of that noise LR filter automatically. I disabled it for this test.

 

[bigal1000]

Go FF

 

[sharp shooter]

Try DxO for noise redustion. It works well for me.