SX110IS - howto start porting

lucmovel

chdkj
I think I will do a shortcut. Implementing GetBatteryTemperature (...) with hard coded return code 99 decimal (...)
Everyone agrees?

I don't. Does it have to be an integer? 99 is likely to fool some of the people who never read this thread. Especially considering that 99 is not hot in Fahrenheit. Someone is likely to think that "99" is the actual temperature.

I suggest "NA" if no longer and clearer message than that will fit.

chdkj

lucmovel
I don't. Does it have to be an integer? 99 is likely to fool some of the people who never read this thread. Especially considering that 99 is not hot in Fahrenheit. Someone is likely to think that "99" is the actual temperature.
I suggest "NA" if no longer and clearer message than that will fit.

I agree with you. But:
a) It has to be an integer. Otherwise it would require changes in camera independent code parts of CHDK (for me: it's not worth).
b) 99 will fool those who never read this thread or main wiki page for SX110 (Obihoernchen?) and who are thinking that temperatures above (let us say) 75° Celsius could be a meaningful value for the battery compartment (actually, I don't know where the temperature sensor could be). Canon itself would return '90' but SX110 will crash before.
c) Fahrenheit vs. Celsius: You are right. I don't have a better idea.
d) "N/A" is not possible, unfortunately (item (a)).

BTW, the current solution returns with the temperature of CCD. It was a quick and dirty hack but it is a confusing one.

Sorry! I'm thinking "99" or "90" is the only possible one that doesn't have an affect for CHDK at all (and for the most users).

Regards!

lucmovel

Better idea: just yank it out of the port. It doesn't work anyway. Why keep it?

"00" is better than "99". No one is going to think that the battery is frozen.

Obihoernchen

lucmovel
Better idea: just yank it out of the port. It doesn't work anyway. Why keep it?

"00" is better than "99". No one is going to think that the battery is frozen.

Yes i would say thats better, because 00 says sth. like doesnt work^^

I will add it to the wiki later (when its ready)

reyalp

lucmovel
Better idea: just yank it out of the port. It doesn't work anyway. Why keep it?

Scripts and ui code expect the function to exist. Putting hacks in the main code for this one camera to do something different would be stupid.

"00" is better than "99". No one is going to think that the battery is frozen.

0 could be a real value. 99, if it were real, would mean your camera was destroyed. Note that the value is in C, it will be converted to 210 (also obviously bogus) appropriately if the user chooses to display in F.

zodiac757

Batteries can be 0°C by the way at winter.
Last winter I've used my SX110 around -15°C.

Is it possible to modify CHDK -
if battery temperature is 99 (or something) then show "NA" instead of "99"?

IlGranTrebeobia

"-99" is possible? 😁

zodiac757

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

fe50

Most 3rd party Li-Ion battery packs for the SD/Ixus series, e.g. the NBL-5 type, don't have a temp sensor, they deliver a fix temp value always, e.g. 28°C; only the origin Canon battery packs shows the correct temp value...
There's an old thread about this somewhere in the shallows of the forum...https://chdk.setepontos.com/d/2021/23

jng

Could the team summarize the current issues that are still not working right?

1. Saving Raw image (using correct colour matrix)?
2. Auto focus, ability to zoom in video mode?
3. Video file saving in 100% quality using SD card?
4. Battery temp (just use a fixed value '99')?
5. What is the proper utility to open SX110 Raw file?
6. Where and when to get latest autobuild for baseline test?

Thank you for the excellent work being done here.

Obihoernchen

jng
Could the team summarize the current issues that are still not working right?

1. Saving Raw image (using correct colour matrix)?
2. Auto focus, ability to zoom in video mode?
3. Video file saving in 100% quality using SD card?
4. Battery temp (just use a fixed value '99')?
5. What is the proper utility to open SX110 Raw file?
6. Where and when to get latest autobuild for baseline test?

Thank you for the excellent work being done here.

ähhhhäm :😀
http://chdk.wikia.com/wiki/SX110IS#Hints
There you find nearly all your answers...

1. See link its "nearly" perfect
2. See link
3. See link
4. See link (up to now it is CCD Temp)
5. Photoshop, Adobe Camera RAW, IrfanView, ...
6. See link

chdkj

IlGranTrebeobia
"-99" is possible? 😁

Hmm.. yes, it is. But -146° F is one character longer as 210° F (when "99" should be returned instead). I don't possess a SX110 currently so I can't test for any "optical" side effects.

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.

chdkj

fe50
Most 3rd party Li-Ion battery packs for the SD/Ixus series, e.g. the NBL-5 type, don't have a temp sensor, they deliver a fix temp value always, e.g. 28°C; only the origin Canon battery packs shows the correct temp value...
There's an old thread about this somewhere in the shallows of the forum...https://chdk.setepontos.com/d/2021/23

That's really interesting!

Does anybody use an original Canon battery pack in SX110?
It would be interesting to know if GetBatteryTemperature works with those. To be honestly: that is more for the records. But even it would be so then GetBatteryTemperature has to be replaced due to the negative effects for other SX110.

Jespar

Sorry for my inferior knowledge about CHDK - but will it ever be possible to achieve a good-looking DNG format on the SX110IS (i.e. with no flaws as present)? I would love that, as the canon format is quite annoying to work with.

EDIT: So, what I mean is a DNG format written directly when the photo is taken, that would be good enough to be used right away when transfered to my computer.

My post might sound a bit demanding and negative, but I really dig the work that the CHDK crew and people in here have put into the software. It's simply amazing, thanks.

If I had any of the skills needed, I would definately engage into the subject myself. 😀

reyalp

Jespar
Sorry for my inferior knowledge about CHDK - but will it ever be possible to achieve a good-looking DNG format on the SX110IS (i.e. with no flaws as present)? I would love that, as the canon format is quite annoying to work with.

It might be more helpful if you could explain in what way the current output is not acceptable, and also what tools/workflow are giving these unacceptable results. From what I understand, the color calibration in the latest autobuilds should be pretty good.

Note that in general, the reason to use raw formats (including DNG) is for the flexibility it gives you working with the image after the fact. If you want decent looking images straight from the camera, just shoot jpeg at max quality.

Also note that the SX110 doesn't shoot any "canon format". The .CRW files produced by CHDK are not in canon format. In fact, they are just a dump of the sensor framebuffer, which is hardly a format at all. This is the same data as included in the DNG, but without metadata to tell tools how to interpret it.

Jespar

Sorry, I was quite unfocused when I wrote that post.

I am aware what RAW-files are capable of, and the need for them to be "developed" to give a good result. I wasn't aware that the DNG-support on SX110IS had evolved to become betterlooking by standard... I thought I needed a new badpixel.bin/script, but couldn't find that anywhere. Maybe you can point me in some direction?

I am using the old (badpixel.bin) I found, in conjunction with the newest autobuild for SX110IS. Probably not the best possible solution?

Thanks for clearing up the thing about the CRW format in your last paragraph. I can see that the DNG file includes the metadata, which is a pretty useful thing.

reyalp

As long as you created the badpixel.bin with your camera, it shouldn't need updating. The script can be found in CHDK/SCRIPTS/TEST in the full install zip. It has not changed since it was originally checked in.

chdkj

@Jespar

VIT40 tried to get a better color calibration as those built in into latest version. Look at here https://chdk.setepontos.com/d/390/434 and the posts before. As far as I have understand he will publish a new color matrix. I don't know when this will happen.

Jespar

Thanks a lot for your answers, and once again the time you put into this community. 😀

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