| Author |
Raider camera driver for C901 [current is v6.3.2] |
mriley
Joined: Oct 03, 2009
Posts: > 500
From: UK
PM |
Means the first 8 step are ISO 100?
That's right. Sort of... As raider says they are only approximate steps:
All 60 steps are different values of ISO but value in EXIF is rounded to the nearest known value. For example, in EXIF is ISO 320 but real ISO value could be in range of 285 - 360 or something like that. decided to make EXIF values rounded to only a few values.
Esato's Newbie of the year and Most Helpful Member 2010!  ------------------- Life is just a ride, enjoy it while you can |
|
|
APR
Joined: Feb 14, 2009
Posts: > 500
From: malaysia
PM, WWW
|
Oh! So what's the highest ISO possible to have in C901?
[ This Message was edited by: APR on 2010-07-31 15:53 ] |
mriley
Joined: Oct 03, 2009
Posts: > 500
From: UK
PM |
ISO 3200 is the highest 
Esato's Newbie of the year and Most Helpful Member 2010! ------------------- Life is just a ride, enjoy it while you can |
APR
Joined: Feb 14, 2009
Posts: > 500
From: malaysia
PM, WWW
|
Oh! Thanks for your information, hope to have the ISO value step like K800i! |
APR
Joined: Feb 14, 2009
Posts: > 500
From: malaysia
PM, WWW
|
All auto
ISO 100, 1s, no flash
ISO 1600? 1s, no flash
ISO 6400? 1s, flash
ISO 6400? 1s, flash
 |
mriley
Joined: Oct 03, 2009
Posts: > 500
From: UK
PM |
do you know what ISO is and how to use it?
Esato's Newbie of the year and Most Helpful Member 2010! ------------------- Life is just a ride, enjoy it while you can |
APR
Joined: Feb 14, 2009
Posts: > 500
From: malaysia
PM, WWW
|
On 2010-07-31 17:26:05, mriley wrote:
do you know what ISO is and how to use it?
Not really, The ISO reading is from ExifReader, but i mean why my photo looks suck in all auto mode?
[ This Message was edited by: APR on 2010-07-31 16:34 ] |
mriley
Joined: Oct 03, 2009
Posts: > 500
From: UK
PM |
when do they suck? in low light or all light conditions?
Esato's Newbie of the year and Most Helpful Member 2010! ------------------- Life is just a ride, enjoy it while you can |
APR
Joined: Feb 14, 2009
Posts: > 500
From: malaysia
PM, WWW
|
Low light condition, like the first pic, it seems like affect by the brightness of the xenon, especially in extremely low light condition |
mriley
Joined: Oct 03, 2009
Posts: > 500
From: UK
PM |
Ok, some things to try:
Rest the phone on a stable surface first, make it steady.
Low light with flash
1. Normal scene, enable flash. Quite fast shutter speed, ISO is 400 (bad quality) Photo will be dark and grainy
2. Twilight portrait scene, enable flash, 0.5 shutter speed, ISO is 200 (much better quality) Brighter less grain
3. Is the 2 photo too bright or too dark?
Too dark: Decrease shutter speed to 1 second. Too bright: Increase shutter speed.
Try that, post photos 
Things to change in low light with flash: Shutter speed, ISO and flash strength (controlled by EV position: EV-2 = weak flash, EV +2 = strong flash)
Look at this too > c901 xenon noise test
Probably worth remembering again that as you change ISO manually, they are approximate values in EXIF so the first pic could be below ISO 100.
[ This Message was edited by: mriley on 2010-07-31 17:07 ] Esato's Newbie of the year and Most Helpful Member 2010! ------------------- Life is just a ride, enjoy it while you can |
titus1
Joined: Jul 27, 2008
Posts: > 500
From: here
PM, WWW
|
Wonder where's Raider?  |
APR
Joined: Feb 14, 2009
Posts: > 500
From: malaysia
PM, WWW
|
Almost no difference 
1 is auto and another 1 is Twilight portrait
Twilight portrait with 1s
 |
mriley
Joined: Oct 03, 2009
Posts: > 500
From: UK
PM |
Dont give up APR You're asking a tiny sensor with small xenon flash to light up an outdoor area of complete darkness.
You can still get good results, experiment with it, ill try tonight.
Could you upload photos with tinypic then post the URL here?
It's a shame we can't have 2 second shutter speed or many other features that didnt work out, but raiderski has done a great job of what can be done
[ This Message was edited by: mriley on 2010-07-31 18:54 ] Esato's Newbie of the year and Most Helpful Member 2010! ------------------- Life is just a ride, enjoy it while you can |
APR
Joined: Feb 14, 2009
Posts: > 500
From: malaysia
PM, WWW
|
On 2010-07-31 19:45:28, mriley wrote:
Dont give up APR You're asking a tiny sensor with small xenon flash to light up an outdoor area of complete darkness.
You can still get good results, experiment with it, ill try tonight.
Could you upload photos with tinypic then post the URL here?
It's a shame we can't have 2 second shutter speed or many other features that didnt work out, but raiderski has done a great job of what can be done
[ This Message was edited by: mriley on 2010-07-31 18:54 ]
I think you are right, the C901 lens is to small when compare with K800i, i think this is the main reason, i will upload some pic tonight |
mriley
Joined: Oct 03, 2009
Posts: > 500
From: UK
PM |
the lens has nothing to do with quality of night photography, that is limited by the sensor, it's sensitivity to light and the ISO and shutter speed options avaliable, K800 has 2 seconds shutter speed, double the exposure of C901
xenon in phones is meant for indoor pics, try some of them you will get better results
Plummy camera driver
[ This Message was edited by: mriley on 2010-08-01 19:39 ] Esato's Newbie of the year and Most Helpful Member 2010! ------------------- Life is just a ride, enjoy it while you can |
|
|
Posted: 2010-07-31 16:47
