SX50 HS porting thread - page 29 - DryOS Development - CHDK Forum  

SX50 HS porting thread

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Online reyalp

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Re: SX50 HS porting thread
« Reply #280 on: 04 / August / 2013, 01:25:17 »
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1. Old Shutter speed 1/100000 secs to 2048 secs (34min)

2. Old ISO from 80 to 80000

3. Old Aperture 3.4
Just because the UI let you enter these values doesn't mean that they actually worked. In general, the ISO overrides don't actually work much beyond the Canon specs.

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1. Shutter speed (long) only 59 secs
Use the zoom controls to switch between fields if you have "type" set to longexp. You can also switch the "type" to Ev.
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2. ISO to 10000
sx50 ISO only goes to 6400, so that should be plenty...

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3. Aperture 3.56
I would expect this is also just a difference in how it is displayed. The "3.4" value in aperture_sizes_table is 352 APEX96 which is actually F 3.56....
Don't forget what the H stands for.

Re: SX50 HS porting thread
« Reply #281 on: 04 / August / 2013, 02:40:48 »
I just flashed 1.2.0-3001-0 c and i found out the menu has major changes.
One other small point - loading CHDK does not "flash" anything.  CHDK loads in RAM - no changes (or flash) are made to the camera's firmware.
Ported :   A1200    SD940   G10    Powershot N    G16

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Offline lapser

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Re: SX50 HS porting thread
« Reply #282 on: 04 / August / 2013, 04:46:26 »
As long as we're talking about the SX50, this is the best photo I could get of Saturn with the 50X zoom:
EOS-M3_120f / SX50_100b / SX260_101a / G1X_100g / D20_100b
https://www.youtube.com/user/DrLapser/videos

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Offline TSJ

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Re: SX50 HS porting thread
« Reply #283 on: 13 / August / 2013, 02:28:11 »
Reporting a bug
i got some problems today using the ND filter option, the camera freeze then shut down. not all the times, but happened a few times. firm V1B.
i got the last update tonight and still the same.


Re: SX50 HS porting thread
« Reply #284 on: 13 / August / 2013, 09:38:43 »
Reporting a bug
i got some problems today using the ND filter option, the camera freeze then shut down. not all the times, but happened a few times. firm V1B.
i got the last update tonight and still the same.
Can you provide more details on what you were doing?  What shooting mode was the camera using ?  (Auto, P, Tv etc?)  Other CHDK settings in use?

Can you go to the Miscellanous Menu -> Debug Menu,  create a crash log and post it here?
Ported :   A1200    SD940   G10    Powershot N    G16

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Offline TSJ

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Re: SX50 HS porting thread
« Reply #285 on: 13 / August / 2013, 16:48:37 »
in the first tries,i was shotting the sun using a Nd1000 + IR,
camera settings: M /iso 80  - 8.0 - 1/6000s then a need les light so i used ND filter override, that works great, but least only few shots then the camera freeze and hang up.

i´ve tied othe times with the same result with a numer of shots varying before hang up.

in this bootlog  i didnt shoting the sun but with the same config, after near 50 shots the camera hangs. i did it just for put here.

tnx

Re: SX50 HS porting thread
« Reply #286 on: 23 / October / 2013, 04:56:49 »
Hello,

I'm using build 3172, which I believe to be the latest. When I try subject distance bracketing, setting it to any value, as far as I can tell (while shooting in P mode, in continuous, in manual focus (as regular focus mode appears to do no bracketing of focus)), it crashes. Specifically, the first shot goes off, I'm still holding down, I hear some sort of sound (clunk/click), and the screen goes black, then off. Bracket type (+/- etc) seem to make no difference. I'm using no other overrides.

Aperture, time value, and ISO bracketing worked fine, in a quick try of them.

Obviously, thanks: as all, indebted.

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Online reyalp

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Re: SX50 HS porting thread
« Reply #287 on: 13 / November / 2013, 15:44:12 »
I've split the discussion of vignetting etc to http://chdk.setepontos.com/index.php?topic=10921.0
Don't forget what the H stands for.


Re: SX50 HS porting thread
« Reply #288 on: 27 / December / 2013, 10:32:41 »

You might want to look at this topic, where we were working on a bug in shoot(), which was fixed, using a focus bracketing script. I think the script worked better than the bracketing in CHDK because it did logarithmic changes in focus instead of linear.

http://chdk.setepontos.com/index.php?topic=9118.0

Santa upgraded my S2IS to a SX50 and i have started to test the camera with my focus bracketing script.
It seems to work with the correct settings in the camera.
BUT when get_zoom returns a value > 197 (almost full zoom), get_near_limit returns the value -1 and get_dof will also be -1 causing the script to stop.

Any ideas why get_dof is not correct when using close to full zoom ?

Re: SX50 HS porting thread
« Reply #289 on: 03 / January / 2014, 11:47:29 »
I will try to answer my own question  :)

I think get_dof turns out as -1 when some part of the formula turns out to be to big or < 1 (not allowed in  "basic" ?).

 

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