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Eos 400d ( Rebel XTI )

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Offline thaibv

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  • 57
  • Canon 400d: Spot, ISO 3200 and more
Re: Eos 400d ( Rebel XTI )
« Reply #160 on: 31 / August / 2009, 22:25:31 »
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Hi,
@cat
Sorry I'm wrong, Cardtrick only work with fat 16 (just edited my previous post)
So use your cam to format your 4g card then use HxD to change label.

Tried hack shutter speed already, but canon protect the shutter very carefully. Can set the speed to 1/5000, 1/8000 but when taking picture it change to 1/4000. Becoz it is a precise and expensive component so not try hard to hack it

« Last Edit: 31 / August / 2009, 22:29:21 by thaibv »
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Offline thaibv

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  • Canon 400d: Spot, ISO 3200 and more
Re: Eos 400d ( Rebel XTI )
« Reply #161 on: 02 / September / 2009, 07:54:24 »
Hi again,
Have a day off today, The Nation Day of Vietnam (2 Sep.). Nowhere to go so playing with camera and code.

Here my lastest release http://code.google.com/p/400d/downloads/list
New:
- Correct Evaluative mode set (now you can open dialog and press set button to active Evaluative mode, dont have to move cursor)
- Focus frame pattern. add 42 more patterns for your 400d, dont know 40d, 50d or higher models have this feature or not.
  Not easy to make it work, but the final code is very simple.

How to choose Focus frame pattern:
Normal use:  
- Press focus frame button to show FP dialog, use main dial or Up/Down/Left/Right button to choose focus point.
- Press focus frame button again to close dialog.

Pattern use:
- Fast press forcus frame button twice to show FP dialog. if you hear a beep and the dialog showed, use Direct Print button to change pattern (if you press the focus frame button not fast enough, the dialog not showed).  
- Press focus frame again to return to default canon focus frame mode.  

Hope ours Direct Print button not died too soon :lol
« Last Edit: 02 / September / 2009, 07:59:00 by thaibv »
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Re: Eos 400d ( Rebel XTI )
« Reply #162 on: 02 / September / 2009, 10:53:22 »
Good news:) 

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Offline Foldesa

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  • 21
  • 400d
Re: Eos 400d ( Rebel XTI )
« Reply #163 on: 02 / September / 2009, 13:07:35 »
Hello again.
Sorry for a long time missed out, but I have very little time for programming.

thaibv you've made great process grats :-)

As I was trying to get AUTO ISO work I found out the correct values for shutter speeds. You can see them in the bottom of this post. The current shutter speed can be found at *(int*)(0x16b7c). So a simple "minimum shutter speed" auto iso can be written easily. But I didn't find any data corresponding to lens focal distance. This is required to make a really good auto iso.
In the next 3 weeks I can't access my laptop. Thaibv if you feel enough time on your hands, maybe you can implement a small while loop for a simple auto iso. If not i will post it in a few weeks.

Regards A

1/4000 0x98
1/3200 0x95
1/2500 0x93
1/2000 0x90
1/1600 0x8d
1/1250 0x8b
1/1000 0x88
1/800  0x85
1/640  0x83
1/500  0x80
1/400  0x7d
1/320  0x7b
1/250  0x78
1/200  0x75
1/160  0x73
1/125  0x70
1/100  0x6d
1/80   0x6b
1/60   0x68
1/50   0x65
1/40   0x63
1/30   0x60
1/25   0x5d
1/20   0x5c
1/15   0x58
1/13   0x55
1/10   0x53
1/8    0x50
1/6    0x4c
1/5    0x4b
1/4    0x48
0"3    0x45
0"4    0x43
0"5    0x40
0"6    0x3d
0"8    0x3b
1"     0x38
1"3    0x35
1"6    0x33
2"     0x30
2"5    0x2d
3"2    0x2b
4"     0x28
5"     0x25
6"     0x24 or 0x23
8"     0x20
10"    0x1d or 0x1c
13"    0x1b
15"    0x18
20"    0x15 or 0x14
25"    0x13
30"    0x10
Bulb   0x0c


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Offline Zibri

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  • 53
Re: Eos 400d ( Rebel XTI )
« Reply #164 on: 03 / September / 2009, 12:00:02 »
Hi again,
Have a day off today, The Nation Day of Vietnam (2 Sep.). Nowhere to go so playing with camera and code.

Here my lastest release http://code.google.com/p/400d/downloads/list
New:
- Correct Evaluative mode set (now you can open dialog and press set button to active Evaluative mode, dont have to move cursor)
- Focus frame pattern. add 42 more patterns for your 400d, dont know 40d, 50d or higher models have this feature or not.
  Not easy to make it work, but the final code is very simple.

How to choose Focus frame pattern:
Normal use:  
- Press focus frame button to show FP dialog, use main dial or Up/Down/Left/Right button to choose focus point.
- Press focus frame button again to close dialog.

Pattern use:
- Fast press forcus frame button twice to show FP dialog. if you hear a beep and the dialog showed, use Direct Print button to change pattern (if you press the focus frame button not fast enough, the dialog not showed). 
- Press focus frame again to return to default canon focus frame mode. 

Hope ours Direct Print button not died too soon :lol

Nice work, but when shooting at 50 ISO all pictures are overexposed :(

Re: Eos 400d ( Rebel XTI )
« Reply #165 on: 03 / September / 2009, 17:36:27 »
I just found this today, this is absolutely incredible work! Thanks for publishing it.
So far so good except for the following..

Is there anyway to get a 8gb or 16gb CF card to work?

Thanks for any info.
--
Keith

EDIT:--------------

my bad, i looked back thru some posts and found this:

FAT16:
at 0x2B "EOS_DEVELOP"
at 0x40 "BOOTDISK"

FAT32:
at 0x47 "EOS_DEVELOP"
at 0x5C "BOOTDISK"

all is well with my 8GB card now. ;-)
« Last Edit: 03 / September / 2009, 20:42:29 by frogcement »
--
Keith

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Offline thaibv

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  • 57
  • Canon 400d: Spot, ISO 3200 and more
Re: Eos 400d ( Rebel XTI )
« Reply #166 on: 03 / September / 2009, 21:22:05 »
Hi,

@Foldesa
I think focal distance value only available while pressing shutter half way down.

@ frogcement:
Cheers, enjoy it.

@ Zibri
Yes, overexposed. Really I thing 400d's sensor minimum iso value is 100. So I wrote some code to auto Av for them, pls set Video to NTSC/PAL to turn on/ off auto Av.
-----------

Again, please post your opinion on lower 100 iso values, so i can decide to keep them available or not.
Thanks!



« Last Edit: 03 / September / 2009, 21:27:29 by thaibv »
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Re: Eos 400d ( Rebel XTI )
« Reply #167 on: 03 / September / 2009, 22:41:08 »
Again, please post your opinion on lower 100 iso values, so i can decide to keep them available or not.
Thanks!

I've noticed that when i go down to ISO 80, my AV+/-
reading goes to -2/3 of a stop. I then have to increase
it manually back to "0".

I haven't had a chance to pixel peep at the difference
of ISO 80 vs. ISO 100, but will try to find time and report
my findings. Again, thank you for your great work.
--
« Last Edit: 04 / September / 2009, 00:40:09 by frogcement »
--
Keith


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Offline thaibv

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  • 57
  • Canon 400d: Spot, ISO 3200 and more
Re: Eos 400d ( Rebel XTI )
« Reply #168 on: 04 / September / 2009, 11:13:10 »
Hi frogcement,

If you set iso 80 and increase manualy back to 0, yours image will overexposed.

When set iso 16, Av will auto down to -3, and at iso 16 image will too too bright, loss details if increase Av comp to 0.


Note: Have found a bug. Double press Focus Frame button to enter Pattern mode, then press Menu or Picture button cause display off when exit menu or Picture viewer mode

Edit: Pls move your finger over Face sensor or press Shutter button half way down to turn display back on. Dont worry, correct it very easy.
« Last Edit: 04 / September / 2009, 11:24:08 by thaibv »
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Offline T.B.

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Re: Eos 400d ( Rebel XTI )
« Reply #169 on: 04 / September / 2009, 11:15:36 »
Great Work! I don't use the Low-ISO Settings - but the other functions are great.
The new focus-pattern are very useful. All my CF-Cards now are working with your autoexec.bin.

Very good work!

 

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