topic Re: I can't Push the ISO of my Canon 40D to H(3200) in General Discussion

I can't Push the ISO of my Canon 40D to H(3200)

Usaf — Thu, 28 Feb 2013 17:53:22 GMT

Im using Canon 40D, Im facing a problem, that I can't push the ISO upto the last limit H (3200). It stops at 1600, I move the dail, it does not go another stop Further?

before this camera, I had another Canon 40D . In that camera I could push ISO to 3200 H. the firmware was 1.0.5, I updated the firmware to 1.1.1, still the same.

Waiting for replies and a solution.

Re: I can't Push the ISO of my Canon 40D to H(3200)

ScottyP — Thu, 28 Feb 2013 18:55:46 GMT

You have to enable/unlock extended ISO in the menus. By default they are disabled. Noodle around for a few minutes and see if you can find it.

Re: I can't Push the ISO of my Canon 40D to H(3200)

cicopo — Thu, 28 Feb 2013 20:28:39 GMT

Scott is correct. I still have my downloaded manual & the info is on page 154. It's a Custom Function (C.Fn 1-3) and you need to set it to 1

Re: I can't Push the ISO of my Canon 40D to H(3200)

ScottyP — Fri, 01 Mar 2013 22:12:03 GMT

...keeping in mind that there is a reason the extended ISO's are locked. By locking them, the manufacturer is acknowledging that for most situations the image quality is not going to be acceptable, with so much noise at that high an ISO level.

I am not sure if the extended ISO on a 40D also include a lower ISO, like ISO 50, but that is actually pretty useful. It is like adding a 1 stop ND filter so you can get longer exposures in daylight for things like blurring water, etc., and there is no discernable image quality loss.