iso 50 on 20d, can i do it?

is there a way to have iso 50 on the 20d? i read an article in a magazine earlier and the camera used was the 20d iso 50......I already have the cfn to use 3200 is there a different one for the iso 50? thanks for anyone that can help me

I have hints of memories of a high end camera going on ISO 50, something like a 1D or even a nokin D model. But it is all a blurr, so it might as well have been a dream.
As far as the 20D, I do not see the sensor or the hardware supporting ISO 50 at all.
If anyone else has contrary results, please post, otherwise, maybe we should leave this thread with the classic


[cricket cricket]...

Not on the 20D. The 5D and 30D can.

I think they're "extended" anyway, having less dynamic range than ISO100 (sorta like H vs ISO1600).

However, it's a convenient in-camera ND filter if you need it.

Doom1701e wrote in post #2291152
Not on the 20D. The 5D and 30D can.

30D cant it just does 1/3 ISO stops...but 100 low as it goes

Doom1701e wrote in post #2291152
Not on the 20D. The 5D and 30D can.

Not my 30D?
The 5D can, and most of the powershot range can as well.

05Xrunner wrote in post #2291171
30D cant it just does 1/3 ISO stops...but 100 low as it goes

Well that sucks, shows you how much the 30D gets used.

On the 20D, shoot ISO 100 EC+1, then recover in raw converter.

There is no ISO 50 on the 20D.

I just figured out a way to do it, but it requires an exacto knife, and some cutting of the sensor, and some epoxy.

May I ask whether this is just a curious question in regards to technical specs of the 20D, or is there a specific need you have to use ISO 50 ?... Just wondering.

adas wrote in post #2291221
On the 20D, shoot ISO 100 EC+1, then recover in raw converter.

that's pretty much what happens on the cameras that can do ISO 50.

adas wrote in post #2291221
On the 20D, shoot ISO 100 EC+1, then recover in raw converter.

deadpass wrote in post #2294485
that's pretty much what happens on the cameras that can do ISO 50.

Not really. If you do that you easily blow highlights. I've never seen evidence that ISO50 has a caveat of blowing the highlights.

cdi-ink.com wrote in post #2294493
Not really. If you do that you easily blow highlights. I've never seen evidence that ISO50 has a caveat of blowing the highlights.

Well it does have less dynamic range than the higher ISOs do. So it's either going to blow the highlights or lose shadow detail.

ISO 50 is achieved by an in-camera software trick. Not sure if 3200 is a trick as well. that's why they're called "H" and "L" instead of 50 and 3200.

Jon wrote in post #2294535
Well it does have less dynamic range than the higher ISOs do. So it's either going to blow the highlights or lose shadow detail.

I never read that. Makes sense I suppose. But...wouldn't ISO100 with a "proper exposure" be way off when turned down to 50? If so, seems kinda pointless to even have ISO50. I can understand ISO3200 because sometimes you're just desperate for shutter speeds...but why would you need ISO50? JUST for waterfalls?