ISO 50

[paulhillion]

Just got a 1DMk2, WOW! :D.

How often do you guys use ISO 50? In what sort of conditions would I use it over ISO 100?

Thanks for any advice.

[roanjohn]

ISO 50 = ISO 3200.........don't use unless necessary.


Oh, it might come in handy if you want to cut more light but forgot to bring your ND filter...........Blurred waterfalls and etc....


Ro1

[jbradc]

I have only had my 1D mark II for a week, but I have not used the ISO 50 setting yet. But it would be useful if you wanted to shoot wide open outdoor in a lot of light or as roanjohn said for onger shutter speeds, etc.
What a great camera huh?

[rdenney]

Just got a 1DMk2, WOW! :D.

How often do you guys use ISO 50? In what sort of conditions would I use it over ISO 100?

Thanks for any advice.

It's sometimes hard to get a wide aperture in bright sun for selective focus, and a slower ISO speed helps.

With my 10D I'm usually two stops under "Sunny 16", but I must bring the images back up in post processing. (I had to do the same thing with slides that I was shooting with the intent to make prints.) But that means a normal bright-sun exposure for me is 1/125 at f/8 at ISO 100. That means I'd have to use 1/4000 if I wanted to shoot a portrait at f/1.4. Forget fill flash at that shutter speed! The biggest aperture I can get and still use fill flash is about f/5.6. ISO 50 gives me f/4. ISO 50 and a 2x neutral density filter gives me f/2.8, and that's in the reasonable range if I want narrow depth of field for a portrait. Granted I could use ISO 100 and a 4x neutral density filter, but then I might lose autofocus if the lens isn't faster than f/2.8.

Put my portrait situation on the beach or a snowy slope, and I'll wish I had ISO 25 or even 12.

It's just another tool in the box to help with those tricky situations when you need it.

Rick "jealous of a new owner of a 1ds" Denney

[slin100]

IIRC, some of the Canon G-series P&S cameras had an adjustable, bulit-in ND filter. I'm not sure how it was implemented but that might be a nice feature on a DSLR.

[imjamie]

I can't speak from a digital point of view, since I only own a lowly Digital Rebel, but I used to shoot ISO 50 film until it became next to impossible to find. How it relates to the digital world I am not real sure, but film wise, it was great for color saturation and clarity for prints, especially when making large prints of say 13x19 or greater. The grain was almost non existant. I would love to hear though how it does on a digital platform.

Thanks,
Marv

[robertwgross]

Velvia 50 Lives!

B&H still has a truckful of it.

---Bob Gross---

[mbze430]

Velvia 50...its my love.

Hey, set the 1dMKII to ISO 50, and use the #3 H-saturat. setting under Color matrix, and you should have Velvia 50!

[Jesper]

Just got a 1DMk2, WOW! :D.

How often do you guys use ISO 50? In what sort of conditions would I use it over ISO 100?

Thanks for any advice.I don't have an 1D Mark II, but as far as I know, the dynamic range is smaller at ISO 50 than at ISO 100 and there's no visible difference in noise. So the ISO 50 setting is not really useful.

If you need a shutter speed and aperture combination that requires a setting lower than ISO 100, you could ofcourse also use a neutral density filter.

[PhotosGuy]

I wish I had it. ISO 12 would be better! ;-)

[Cadwell]

So the ISO 50 setting is not really useful.


Quite the contrary I use it fairly often in bright light where I want to keep the aperture fairly wide and maintain a slow-ish shutter speed. An example is shooting through a fence at a race circuit where I want narrow depth of field to fade out the fence but I don't want the shutter speed so high that the cars looked parked.

[primoz]

So does my fridge :) But my 1v is staying at home more and more often.

[slin100]

I don't have an 1D Mark II, but as far as I know, the dynamic range is smaller at ISO 50 than at ISO 100 and there's no visible difference in noise. So the ISO 50 setting is not really useful.

I've read this, too, that some dynamic range is sacrificed. Heck, that should make it even more like slide film! :lol:

[Lesmac]

I use ISO 50 most of the time on 1DS MKII, I find the images are slightly cleaner than ISO100.
Most of my shots are on a tripod, so slow speeds are not an issue for me.
Les
http://lesmclean.photoblink.com/

[Huckaback Photo]

Hi Paul
Congratulations on the new body, just magic I reckon.
Good to meet you recently in Guernsey, its a lovely Island the fact you had snow the day we arrived supprised us.

Now the way I see it with that camera body is, its a speed machine so make use of the higher iso settings, faster shutter speeds and not forgetting 8.5 frames a second / sound effects.( sheer music to the ear.
It will cope with anything i throw at it (image wise that is) Think i only used 50 iso twice so far, but often set to 200 / 320 & 400 . tuesday eve i took 2.5 gb of shots at 1250 & 1600 at a Operatic full dress rehearsal all available light , I was vary impressed with results.
actually used 3200 iso more than the 50 iso, try to keep this expansion turned off when not required as no visual indication in viewfinder (Canon should have put this in I think).
i wear glasses so when i look through viewfinder with eye correction set I can read all info easilly without glasses & yet to read say ISO on the top of camera i have to put on glasses, a right pain in the a-- Nothing worse than shooting at 3200 when not needed.

Regards
Martin (Huckaback Photo)

some Guernsey shots on my Gallery.
http://www.pbase.com/huckaback_photo/image/40485389/large

[Cadwell]

no visual indication in viewfinder (Canon should have put this in I think).
i wear glasses so when i look through viewfinder with eye correction set I can read all info easilly without glasses & yet to read say ISO on the top of camera i have to put on glasses, a right pain in the a-- Nothing worse than shooting at 3200 when not needed.

Regards
Martin (Huckaback Photo)


Custom function settings 8.1 or 8.2 give you ISO display in the viewfinder... very useful. You should try it some time ;)

[Huckaback Photo]

Cadwell
Hi Glen
If I had taken the time to read all the book instead of the bits I thought I would need !
So thanks I'm always willing to learn, & of course CF 8.1 is now set up.
Cheers
Martin (Huckaback Photo)