> Were you shooting JPEG? Remember, JPEG is only 8 bits, 256 values, of
> brightness data per color. The camera can capture 12 bits, 4096 values.
> I don't remember the math for stops, but it is in the archives, on
> Luminous Landscape and other places.
Hi, Please be aware that the E-1 Sensor can deliver 14 bits instead of
the usual 12.
This means 16384 values.
Alfredo
On Aug 15, 2005, at 10:46 PM, Moose wrote:
> Richard Lovison wrote:
>
>> I hand held this one at 1/60. Thought the pattern was kind of
>> interesting. Sharpened a bit and curves was used to accent the
>> highlights a bit more.
>>
>> http://people.simons-rock.edu/rlovison/temp/E-1.second.html
>>
>>
> I quite like this. I'm often trying to capture textures in nature. I
> like the first one too. Shouldn't be surprised, since you've made nice
> images with OMs.
>
>> Another funny digital newbie moment... I took an indoor natural light
>> shot of the living room with the patio door open with partly cloudy
>> skies. It looked as if there were only 3 stops of light before I took
>> the image and after I viewed it I thought, "geez the dynamic range of
>> this camera is rather limited." I just about lost highlight detail
>> and the shadows near the fireplace were pure black. So I decided to
>> double check the stops of light with the OM-4t spot and it indicated 6
>> stops. Oops, so much for my initial judgement call. :) It certainly
>> didn't look like 6 stops of light to my eye between the sun lit carpet
>> near the door and the dark green/black stone at the fireplace. .
>>
>>
> Were you shooting JPEG? Remember, JPEG is only 8 bits, 256 values, of
> brightness data per color. The camera can capture 12 bits, 4096 values.
> I don't remember the math for stops, but it is in the archives, on
> Luminous Landscape and other places.
>
> The point is that the camera firmware and processor have to somehow
> squeeze 4096 tonal vlaues into 256 slots. There are an infinite number
> of possible combinations of dropping some part of the very brightest
> and/or darkest values together with various compression schemes for the
> rest. This is one of the big reasons for the differences noted in a
> recent thread between different DSLRs when shooting JPEGs.
>
> The solution is to shoot RAW. Depending on the camera model, somewhere
> between 1.5 and 2, and maybe a bit more in some cases, additional stops
> of latitude are available. Of course, they still have to be trimmed
> down
> to 8 bit for the web and for printing, but you get to choose how it is
> done. The printing limitation is due to the limits of reflective media.
> If working in 16bit, it's best to send it to the printer driver that
> way. The driver knows best how to do the conversion for the printer.
>
> Moose
>
>
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