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50 ISO

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Brighton
90 posts
73
Message posted at 12/16/2012, 10:47:28 AM by Brighton
The canon 5d has an ISO setting of 50,

anybody out there using it?. If so what for?.
Canon EOS 450D; Canon Eos 5D Canon EF-S 60mm f/2.8 macro; ...

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Gbfoto
264 posts
73
Message posted at 12/16/2012, 15:39:43 PM by Gbfoto
Brett wrote a blog article about it that may be of help to you here:

ISO 50
Canon EOS, some glass and a speedlite!

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Bradcalkins
2549 posts
84
Message edited at 12/16/2012, 23:29:07 PM by Bradcalkins
As I noted in the comments on Brett's blog, you get longer shutter speeds. Handy for a few things:

1. If you want longer exposures at a particular aperture.
2. If you want to shoot wide open on a bright day.
3. If you want to keep your shutter speed low for fill flash sync speeds (same as #1 for different purpose).

I seem to keep finding conflicting information, but it does seem that Canon provides less dynamic range at ISO 50 (see technical note here)
Olympus OM-D EM-1: 12-40mm f/2.8, 75mm f1.8, 25mm f1.4, 50-2...

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Miketea
235 posts
79
Message posted at 12/17/2012, 15:18:04 PM by Miketea
iv been playing with this on my mkII. It looks awesome
Canon 5D MKII 50mm f1.8 28mm 70mm f2.8 60mm f2.8 macro

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Miketea
235 posts
79
Message posted at 12/17/2012, 15:19:07 PM by Miketea
Oh and I meant to say ive been using it for landscapes
Canon 5D MKII 50mm f1.8 28mm 70mm f2.8 60mm f2.8 macro

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Brighton
90 posts
73
Message posted at 12/18/2012, 11:37:42 AM by Brighton
have since heard it is good for snow pics. Could it be that its good for very bright pic?
Canon EOS 450D; Canon Eos 5D Canon EF-S 60mm f/2.8 macro; ...

Uploaded files:3100 | Total Sales: 1075
Bradcalkins
2549 posts
84
Message posted at 12/18/2012, 12:08:05 PM by Bradcalkins

Originally posted by Brighton:
Quoted Message: have since heard it is good for snow pics. Could it be that its good for very bright pic?


See my link above - turns out it basically overexposes a stop and then dails the exposure back down post capture. This boosts the exposure in shadow areas for less noise, but can also clip highlights and drop dynamic range. So if you meter correctly (ie overexpose) for bright snow it probably won't help and may clip highlights. But if you let the meter expose white as grey and then boost exposure in post it will help as your shadows will have less noise. Or so it seems to me :)
Olympus OM-D EM-1: 12-40mm f/2.8, 75mm f1.8, 25mm f1.4, 50-2...

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Brighton
90 posts
73
Message posted at 12/22/2012, 15:57:07 PM by Brighton
thanks guys for all your comments,
now I am getting used to the camera
I'll take it for a walk around and
and check it out
Canon EOS 450D; Canon Eos 5D Canon EF-S 60mm f/2.8 macro; ...

Uploaded files:3100 | Total Sales: 1075
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