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> Sony Ericsson 8.1MP C905 Discussion (Shiho)
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c905 produces nice pic imo.. great level of detail, less noise, and no purple fringing... juz i think there's a slight yellow tint that makes the colors seems inaccurate... this is most visible on the blue color of the sky and red though.. this is just my opinion, sorry if i misjudged the colors...
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Posted: 2008-09-17 07:20:29
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On 2008-09-16 09:59:49, marty mcfly wrote:
This suggests it's a problem within Sony Ericsson firmware then. As you pointed out, the Shutter Speed and Exposure Time should be the same value. They are one and the same thing.
Not if the camera (phone) has a mechanical shutter. The shutter may be open for longer than the actual time the image data is sampled from the sensor.
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Posted: 2008-09-17 08:04:16
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On 2008-09-17 08:04:16, AbuBasim wrote:
On 2008-09-16 09:59:49, marty mcfly wrote:
This suggests it's a problem within Sony Ericsson firmware then. As you pointed out, the Shutter Speed and Exposure Time should be the same value. They are one and the same thing.
Not if the camera (phone) has a mechanical shutter. The shutter may be open for longer than the actual time the image data is sampled from the sensor.
I'm sorry that is wrong. Exposure Time is determined by shutter speed because they are the same thing. They are not two different measurements.
A mechanical shutter would not stay open for 1 sec and give a much lower exposure time, because then the camera would have to be using an additional electronic shutter to stop light coming into the sensor. This would take away the point of having a mechanical shutter in the first place. (Plus Electronic Shutters are very advanced and very very expensive bits of kit.)
If the shutter is open for 1 sec, that is how long the sensor is exposed for, hence exposure time.
It is clearly something that is not being logged properly. Other Cyber-shot phones log this value as just 'Exposure Time'. The example from the C905 shows that a value is being logged as 'Shutter Speed', but is clearly an error in the firmware.
_________________
I can't think of anything to write here...
[ This Message was edited by: marty mcfly on 2008-09-17 09:02 ]
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Posted: 2008-09-17 09:43:11
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I got the shutter speed and exposure times the wrong way. I was looking at EXIF from i-mobile 902 photos and noticed that the shutter speed usually is shorter than the exposure time. (The i-mobile 902 has a mechanical shutter.) So I deduced incorrectly.
Thanks for the clarification, Marty.
Edit: Actually, I still think there's a reason why some cameras record different values for exposure time and shutter speed. The i-mobile 902 is not the only one doing this. Have a look at sassho's nice cat photo
here.
[ This Message was edited by: AbuBasim on 2008-09-17 12:20 ]
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Posted: 2008-09-17 10:35:53
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Is okay.
The silly ISO figure proves somethings not right with the software anyway.
But moving on I guess, these newer pictures are very exciting. I wasn't too impressed by the C905 as first, but I am looking forward to it now. Lets just hope bugs are down to a minimum.
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Posted: 2008-09-17 11:18:55
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Edit: Actually, I still think there's a reason why some cameras record different values for exposure time and shutter speed. The i-mobile 902 is not the only one doing this. Have a look at sassho's nice cat photo
here.
Yes as I said its something that shouldn't be there. Please read this article:
http://www.goldfries.com/phot[....]hutter-speed-aperture-and-iso/
It explains that Shutter Speed and Exposure Time are the same thing.
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Posted: 2008-09-17 14:13:51
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I have a silly question to ask. Does anyone knows how many pics can you take with C905 BestPic feature? From what I've been reading, it's 7 but on some other phones (K800i, C902) it's 9. Could it be a mistake?
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Posted: 2008-09-17 14:28:54
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Muhammad-Oli Posts: > 500
I don't see why they'd change... I assume they just bolt that feature on and leave it fairly unchanged from model to model.
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Posted: 2008-09-17 14:30:21
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On 2008-09-17 14:30:21, Muhammad-Oli wrote:
I don't see why they'd change... I assume they just bolt that feature on and leave it fairly unchanged from model to model.
Still VGA-sized shots then?
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Posted: 2008-09-17 15:10:23
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On 2008-09-17 15:10:23, AbuBasim wrote:
On 2008-09-17 14:30:21, Muhammad-Oli wrote:
I don't see why they'd change... I assume they just bolt that feature on and leave it fairly unchanged from model to model.
Still VGA-sized shots then?
The k850i does 9 pics with bestpic at full 5 mp resolution each pic, so like Oli said I dont think they would take a step back
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Posted: 2008-09-17 15:24:33
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