Query about ISO 50 Cameras

hi, i was wondering, about the ISO50 cameras .

where can i get one of those, and how much will they run me for a good quality one.

please get back to me on this.

thankyou =]

Hi and welcome,

Might help more if you could tell us a little bit more about what it is you're trying to achieve - are you meaning a compact camera that does ISO 50 for a few hundred dollars, or a Canon 1Ds3 like mine for $12,000 (NZD)?

On a side note, ISO 50 isn't that great on most SLR cameras as it normally costs you about 1 stop of dynamic range - you get better results sticking a 1 stop filter on the front and shooting at ISO 100.

Hope this helps!

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Originally Posted by Colin Southern

On a side note, ISO 50 isn't that great on most SLR cameras as it normally costs you about 1 stop of dynamic range - you get better results sticking a 1 stop filter on the front and shooting at ISO 100.

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Hi Colin,
Just out of curiosity, Can you shed some light on the advantages you get in an ISO 50 setting ? I never got an opportunity to take a shot in ISO 50 nor my camera has that :(.
Is it just the noise reduction and less DR?

Why is ISO 100 starting benchmark in most cameras?

Please comment.

Thanks
~Ajith

Quote:

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Originally Posted by ajith.rajeswari

Hi Colin,
Just out of curiosity, Can you shed some light on the advantages you get in an ISO 50 setting ? I never got an opportunity to take a shot in ISO 50 nor my camera has that :(.
Is it just the noise reduction and less DR?

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Hi Ajith,

Less DR is what you get, but unfortunately it's not an advantage :(

Just as we use higher ISO settings when we don't have enough light to capture a shot the way we want, we can also use lower ISO settings in situations where we have too much light. Good example might be capturing a dawn shot; you might want a 30 second exposure @ F11 @ ISO 100 - but as the sun rises you end up going to F16 and then F22 - and then F22 @ ISO 50 (if desperate enough). In reality - because of the decreased DR - I seldom use it.

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Why is ISO 100 starting benchmark in most cameras?

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Not sure to be honest - I think it's 200 for a lot of Nikons.

Thanks for the answers Colin.
~Ajith

The only time I use ISO 50 with my DSLRs is when I'm shooting portraits in bright light using flashes that won't high speed sync. ISO 50 + a polarizer help keep the shutter speed down to the flash sync speed, and still allow for large apertures.

I don't know about other cameras, but in my Canon DSLRs (40D and 5D) ISO 50 and 3200 are just a processing adjustment using the in-camera software. ISOs 200 - 1600 are actual hardware changes; I'm not up on electronics, but the gain is turned up or something to get greater light sensitivity. ISO 50 is ISO 100 overexposed a stop and then pulled in the in-camera processing software. ISO 3200 is ISO 1600 underexposed a stop and then pushed. I haven't tested ISO 50, but I've done a lot of comparing between setting my 5D to ISO 3200, or shooting ISO 1600 at N-1, and doing the push myself. Pixel peeping I sometimes think I do a slightly better job with the noise than the in-camera software, but in prints I really can't see a difference.

Native ISOs of 50 and 80 seem common among compact digital cameras.

Thanks Henry.