SX110IS - howto start porting

zodiac757

chdkj

zodiac757
is it possible to show ccd + optical temp only?
(by "all" we can see the false sensor value too)

No, it isn't. Otherwise it would require changes in camera independent code parts of CHDK.

Improving CHDK with "ccd + optical", "optical + battery", "ccd + battery" functions can be useful for the other cameras too. I think SX110 is not the only one camera that doesn't support all the 3 sensors.

What does the other cams write with 2 sensors in "all" mode? (Maybe in an another topic we can find.)

In jpeg with 9mp it's 36-360mm EFL. But in raw and nearly 10 mp? 34-340? Any tips? Or can we measure it? I will calibrate it with a Sony DSLR.

chdkj

zodiac757
Improving CHDK with "ccd + optical", "optical + battery", "ccd + battery" functions can be useful for the other cameras too. I think SX110 is not the only one camera that doesn't support all the 3 sensors.

...nevertheless we have to avoid camera crashs due to erroneous functions called by CHDK. GetBatteryTemperature is broken.

zodiac757What does the other cams write with 2 sensors in "all" mode? (Maybe in an another topic we can find.)

Other cameras (could) have the same problem. But SX110 is the only one that crashs (as far as I know). The whole discussion is based on that...
GetBatteryTemperature returns with any camera dependent value even with no sensors in place. But not SX110.

zodiac757
In jpeg with 9mp it's 36-360mm EFL. But in raw and nearly 10 mp? 34-340? Any tips? Or can we measure it? I will calibrate it with a Sony DSLR.

You are right. Image dimensions influences focal length. I think it should be calculable.

zodiac757

10xA=9x6
A=(9x6)/10
A=5,4

then we must multiply with 6 to get EFL (like 6.0-60.0mm -> 36-360mm)
5,4x6=32,4

32,4-324mm without cropping the outer black frame

BUT:
9mp is 3456x2592=8,957952
10mp (cropped) is 3684x2772=10,212048

so the right value is 31,579-316mm

Main Menu / OSD / Misc values / Adapter Lens scale 94 for RAW, 108 for JPEG

or not? I'm tired

maybe a script could to shot the 10mpixel photo direct to jpeg for faster use
or keybind to fast switch raw<->jpeg

nerdboy4200

Hi,

Somebody might also want to post the color matrix corrections, such as below:

dcraw -v -r 1.6254 1 2.1871 1  CRW_1356.DNG

So that those who use dcraw, or any other program, and not the Windows programs can also do the raw conversion.

zodiac757

"on/off error" again, now most is play mode (95%)

chdkj

@zodiac757

Hardware failure?
It seems that you are the only one with this problem (at least no one mentioned it after the bug-fix).

zodiac757

Maybe the "on/off error" solved (again😀
I've deleted the empty folders in "\dcim", and their .ctg files, in "\dcim\canonmsc".
No errors after it.
That could be the reason that there wasn't any problems for a few weeks after formatting the card.

I've made a mistake by calculating EFL, so the right values are about 33-330mm. I'm gonna crazy.
So Main Menu / OSD / Misc values / Adapter Lens scale is 100 for RAW, 108 for JPEG.
It was wondering why need to modify Lens scale to 108 and why 33mm is the default. Now we know it.

DAVE008

A note on the ALT button ISO shift bug:

If I set the ALT button to FACE from PRINT, this seems to disable the ALT button in CHDK when I turn the camera off and back on. This makes it so I can't excess the CHDK menu anymore.

My solution is to have a 1GB card for doing special photography with CHDK and a 2GB card for when I need ISOSHIFT which is a lot since I do a lot of shooting in the woods etc.

The display features and power-on into Playmode are still present though.

flohack

Hi folks,

with the latest build for the 110IS I have found 2 possible issues/bugs here:

- DNG enabled, looked at EXIF data, Model name shows up as "Model - Canon PowerShot SX110 ISÿÿÿÿÿÿÿ"
- setting the camera to wide angle format has no effect on the RAW format (I think I´ve read about this somehwere, can you point me in the right direction)

regarding the EXIF data, I have the faint feeling that other thing could also be not correct. Its hard to compare, but maybe someone could give this a short assessment. The wrong model name, could it be a codepage issue?

kind regards, Florian

zodiac757

Hi flohack,
raw is exactly the data that the CCD gets from the light - without cropping ("wide mode"), without noise filtering, color modifications, and compression. I think its not a bug.

flohack

zodiac,

yes forgive me I´m a moron.... but then on the other hand I thought right now well maybe it could crop when converting to DNG. It would make things maybe faster, and to be honest, If I shoot, and I want it cropped, then why shouldn´t it do the cam? Lets be serious, with this type of camera one expects a few quick-and-dirty features.

Could this be scripted? How much "assembly-hacking" is the DNG converter?

regards FL

zodiac757

I don't know the answers. I'm only thinking about scripting but I hadn't started yet.

My first idea was to make 10mp jpeg's with 33mm EFL instead of 9mp with 36mm.
I used basic language last on C64. :]

chdkj

zodiac757
Maybe the "on/off error" solved (again😀
I've deleted the empty folders in "\dcim", and their .ctg files, in "\dcim\canonmsc".
No errors after it.
That could be the reason that there wasn't any problems for a few weeks after formatting the card.

Hmmm.. I don't know. DCIM is a standard folder by Canon and has nothing to do with CHDK. But apparently it helps..

zodiac757
I've made a mistake .... I'm gonna crazy.

😉

zodiac757
I've made a mistake by calculating EFL, so the right values are about 33-330mm. I'm gonna crazy.
So Main Menu / OSD / Misc values / Adapter Lens scale is 100 for RAW, 108 for JPEG.
It was wondering why need to modify Lens scale to 108 and why 33mm is the default. Now we know it.

Zodiac757, may I ask you to have a look in platform\sx110is\main.c ?
There is one interesting thing (at row 7😎:
- static const int fl_tbl[] = {6000, 6700, 7300, 8200, 9100, 10300, 11500, 12800, 14400, 16100, 18100, 20100, 22400, 25200, 28100, 31500, 34900, 38900, 42500, 46600, 51100, 55900, 60000};
It's the focal length table.

Is there anything that we should change?

chdkj

DAVE008
A note on the ALT button ISO shift bug:

If I set the ALT button to FACE from PRINT, this seems to disable the ALT button in CHDK when I turn the camera off and back on. This makes it so I can't excess the CHDK menu anymore.

I did notice it also from time to time. Pressed ALT-button (FACE) twice and CHDK menu appears. Sometime I had to to press FACE a third time because Canon Face Mode instead CHDK menu appeared. Could be a timing problem ...

chdkj

flohack
Hi folks,

with the latest build for the 110IS I have found 2 possible issues/bugs here:

- DNG enabled, looked at EXIF data, Model name shows up as "Model - Canon PowerShot SX110 ISÿÿÿÿÿÿÿ"
...
regarding the EXIF data, I have the faint feeling that other thing could also be not correct. Its hard to compare, but maybe someone could give this a short assessment. The wrong model name, could it be a codepage issue?

It's not a codepage issue, camera name will be shown correct until the length of name.
@main developers
non initialised buffer?
in core\dng.c: const char cam_name[32]; ... get_parameter_data(PARAM_CAMERA_NAME, &cam_name, sizeof(cam_name));
What are you thinking?

flohack
zodiac,

yes forgive me I´m a moron.... but then on the other hand I thought right now well maybe it could crop when converting to DNG. It would make things maybe faster, and to be honest, If I shoot, and I want it cropped, then why shouldn´t it do the cam? Lets be serious, with this type of camera one expects a few quick-and-dirty features.

Could this be scripted? How much "assembly-hacking" is the DNG converter?

regards FL

If you talk about DNG written by CHDK (and not about conversion by an external converter): there is no one line of assembler in core\dng.c. It's C-code. But it's generic code and used by all cameras supported by CHDK and supporting DNG.

Regards!

chdkj

zodiac757
I don't know the answers. I'm only thinking about scripting but I hadn't started yet.

My first idea was to make 10mp jpeg's with 33mm EFL instead of 9mp with 36mm.
I used basic language last on C64. :]

JPG will be written by the camera itself. I don't believe that one can extend the original 9MP to 10MP even if the sensor might be a larger one than 9MP.

Greetings!

DAVE008

chdkj

DAVE008
A note on the ALT button ISO shift bug:

If I set the ALT button to FACE from PRINT, this seems to disable the ALT button in CHDK when I turn the camera off and back on. This makes it so I can't excess the CHDK menu anymore.

I did notice it also from time to time. Pressed ALT-button (FACE) twice and CHDK menu appears. Sometime I had to to press FACE a third time because Canon Face Mode instead CHDK menu appeared. Could be a timing problem ...

I gave it another try and to no avail. Cant for the life of me get the CHDK menu to appear. Display of battery left, time, and card capacity is good enough for now.

zodiac757

chdkj

zodiac757
I don't know the answers. I'm only thinking about scripting but I hadn't started yet.

My first idea was to make 10mp jpeg's with 33mm EFL instead of 9mp with 36mm.
I used basic language last on C64. :]

JPG will be written by the camera itself. I don't believe that one can extend the original 9MP to 10MP even if the sensor might be a larger one than 9MP.

Greetings!

I'll read after the ubasic commands. I don't know the opportunities.
The sensor is 10mp but sx110 uses 9 only. If we could change the sensor for a greater, EFL won't grow.
The only way is to use the whole sensor - without taking raw. Maybe a script can't do that.

reyalp

zodiac757
The sensor is 10mp but sx110 uses 9 only.

What do you mean ? Are you talking about the difference between jpeg size and raw size ?

FWIW, it looks to me like CAM_ACTIVE_AREA* are not correct for SX110, since there's usually some black border around the active area. If you are looking at DNG, it might have been modified by the badpixel stuff so you don't see this as zero value pixels. The difference between active area and jpeg size is usually quite a bit less than the difference between sensor size and jpeg size.

If we could change the sensor for a greater, EFL won't grow.
The only way is to use the whole sensor - without taking raw. Maybe a script can't do that.

Definitely not with script, or without a lot of asm hacking.

zodiac757

reyalp:
9mp jpeg is 3456x2592=8,957952 mp
10mp raw (after cropping the black border) is 3684x2772=10,212048 mp
it has larger field of view compared to jpeg, ~33mm EFL instead of the default 36mm

but my assembly knowledge is very-very poor

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