Thread photos dual iso

Started by Danne, July 30, 2013, 09:05:45 PM

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After seeing some of the other images in here, I'm a little ashamed to even post this. But here is my rough and dirty first test with dual ISO.
I was on a walk and there wasn't much catching my attention, but there was some wide DR between the setting sky and dark foreground. I took the opportunity to give it a whirl.

The only processing was some of RAW Therapee's auto highlight recovery, etc...

Simultaneously shot JPEG

Dual ISO

Canon 6D, Vintage Sears 50mm prime, F8, 1/125, ISO 800/3200
Handheld, No tripod.

PS - @Akry, Great work with your 6D!


iso 200/800
some levels adj.



Grand Canyon and Sedona visit this past week.  Thank you so much to those who work on this project and to those that keep this community so great.

ISO 100/800
Canon 24-70 @ 24mm
Canon 50D

10 vertical frame panorama stitched in PS CC (full res ended up being 14561x4639)
ISO 100/800
Canon 24-70 @ 24mm
Canon 50D


I'm a gig/event photographer experimenting with dual ISO.  It's been great in environments where there is such a strong contrast for things like stage lights and flash work.  A couple of examples.

edit: Adjusted picture sizes.


Not sure if this is a good candidate for Dual ISO, but I went for it anyway


Interesting combining flash with dual iso(second picture). Do you think the result would be different with regular raw in this case?

Third photo looks relly good. I like it a lot



Quote from: Danne on May 20, 2014, 04:12:02 PM
Interesting combining flash with dual iso(second picture). Do you think the result would be different with regular raw in this case?

Third photo looks relly good. I like it a lot

The big win for event flash photography is getting more DR in the backgrounds.  Especially events like festivals where you notice that background lights colour channels cap out really quickly and everything just looks really smudged.  Dual ISO has helped me immensly shooting manual flash in a pinch in this environment too - my TTL flash was stolen a while back and I haven't been able to afford a replacement.

Most of the examples here seem to be scenes which makes sense.  We've all seen overexposed skies and can appreciate at a glance how big an improvement we are getting with Dual ISO.  I question why most people haven't really discovered it for portrait/event/performance/street style stuff where the loss of detail across the frame matters less and your RAW files has much more flexibility in what you get out of a shot that is just snapped 'in the moment.'

If there is one downside for me though, it's shooting an event (200-400 shots) and leaving them to brew overnight, ultimately costing me 60mb each shot.  Here I was thinking that buying a 6D would be a good move to preserve HDD space - hah!


Hi, can anyone post a sample of a high base iso image using this? High like ISO4000, and then compared to ISO4000/8000 maybe


ISO 4000 is actually 3200 pushed, and sometimes 1600 pushed (so you lose highlights and you gain nothing in shadows). Between 3200 and 3200/6400, the winner will be 3200.

If your minimum ISO ends up greater than 400, do not use dual ISO. Even if the minimum ISO is 400 (as in 400/1600), think twice before using it. Stick to plain old ETTR instead.

Dual ISO is most effective at 100/800, 100/1600, 100/400 and maybe 200/1600.

(I should probably add this advice in the menu)


thanks a1ex. do you know where i can find a list of native iso's for the 6d ?



not sure how accurate this is but its a step to what you are looking for, i use 320,640 or 1600 sometimes 3200, cleanest results iv had using them.


I don't use dual ISO all that much, but I didn't have a tripod with me for these first three:

60D, 8mm fisheye, dual ISO 100/1600

10 stop ND filter + dual ISO makes an 8 sec exposure directly into the sun possible:

1100D, Canon 10-22mm @ 10mm, f/14, ISO 100/1600, 8s
(the ND makes some strong color casts that are hard/impossible to rectify, I don't have the $$$ for a really nice one)

add an off camera flash on it's most powerful setting (which still wasn't enough):

1100D, Canon 10-22mm @ 10mm, f/4.5, ISO 100/1600, 2.5s



Two pictures exported with kithcehof plugin in lightroom. Dualiso, still amazing :)



Actionshot in the shadow with a lot of backlight
Camera Model : Canon EOS 5D Mark III
Exposure : 1/1600 seconds
Aperture : f/4
DUAL ISO Speed : 400/1600
Focal Length : 169 mm



Quote from: HansSurfer on June 05, 2014, 08:09:18 PM
Actionshot in the shadow with a lot of backlight

What did you use to process it?
Making Magic 550D
EFP/ENG Photog/Editor


Canon EOS 7D, EF 28-300mm IS USM
Canon EOS 7D & 40D, EF-S 17-85mm IS USM, EF 28-300mm IS USM, Mir-20, Mir-1, Helios 44-5, Zenitar ME1, Industar 50-2, Industar 61L/Z-MC, Jupiter 37A, TAIR-3


Quote from: Braga on June 06, 2014, 09:56:33 AM
What did you use to process it?

I always use Photoshop CC with ACR.
In this picture I blurred the background to give the dog the attention they deserve.


A hawk family lives around my house and he often comes to the trees in and around the garden. Yesterday he was  eating a garden lizard and screaming at the top of his lungs. I guess he thought that it was tasty! Take a look. Personally, I'd pass ;)

Shot with 5D3 firmware 1.2.3

The first one was shot with a 100-200L @200mm, ISO 100/1600, F/8, 1/250
The second one was shot with a 100-400L @400mm with a 1.4x so @560mm, ISO 400/6400, F/8, 1/200
I left the exif on so you can see but kills it :(.

I was shooting against the light. The sun is a little to the left of the bird.


here some shot i did with the dual-iso... seriouly it give a new life to my 7D


dual iso is way better than bracketing, and it makes photos look better than the usual jpg. but take some time prosessing though. excellent new feature. nice colors. this is how images should come out from canon by default in jpgs.