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Eos 400d ( Rebel XTI )

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Offline thaibv

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  • Canon 400d: Spot, ISO 3200 and more
Re: Eos 400d ( Rebel XTI )
« Reply #10 on: 04 / June / 2009, 04:30:36 »
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Thanks Whim!

I already activated "CF bootsector" in CardTricks  but it does not work.

Could you show me how to do it right.

Thank you!
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Re: Eos 400d ( Rebel XTI )
« Reply #11 on: 04 / June / 2009, 07:31:22 »
Dont you have to set a new crc check-sum value in the header, after modifying a string and encrypting it again?

This checksum is present in the 40D FW at byte 0x20-0x23 of the file header.

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Offline Foldesa

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Re: Eos 400d ( Rebel XTI )
« Reply #12 on: 04 / June / 2009, 13:35:29 »
Dont you have to set a new crc check-sum value in the header, after modifying a string and encrypting it again?

This checksum is present in the 40D FW at byte 0x20-0x23 of the file header.

I tried it. The problem I'm getting is that there is every string twice. Try to search for some strings. You will find it in two places. If i change the first one, calculate checksum, then I can upload the frimware. But the srings doesent change. If i replace both srings, or only the second one and calc checksum it can't be uploadad. There must be a second checksum somewere that has to be calculated before the first one in the heather. Mayxbe it is for the srings, and the header's chksum is for the whole file. The best way would be to integrate into canon's system menu, but i did not find a way (yet).

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Offline thaibv

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  • Canon 400d: Spot, ISO 3200 and more
Re: Eos 400d ( Rebel XTI )
« Reply #13 on: 07 / June / 2009, 11:47:44 »
Hi again,

Here is my autoexec.bin that allow setting iso from 32,40, 50 .... 3200.
http://www.filefactory.com/file/ag5b25e/n/AUTOEXEC_BIN

To set ISO: Press ISO button on your 400d and set ISO to 100, 200 ...1600, then press "Direct Print" button repeatedly to set ISO.

If you set ISO 100 and press Direct Print repeatedly, you will get 
ISO:             100->125->160->32->40->50->80->100
Others are:   200-> 250-> 320 ;  400-> 500-> 640; 800->100->1250; 
                    1600->2000->2200->3200
When you press Direct Print to change Iso, it change your Metering Mode to    "Spot". Spot Metering is helpful when shooting object that is small and hight contrast to background.  The downside is that you have to you change metering mode each time you change ISO with Direct Print button (if you don't like Spot)

Hope all normal 400D user (like me) can take advantage of this hack.
Thank you again Foldesa,  Sekth  and all Members!
« Last Edit: 07 / June / 2009, 12:07:19 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 #14 on: 11 / June / 2009, 22:43:41 »
ISO-AUTO doesent work. It just displays it. And ISO 3200 works fine, but gives way too mutch noise :(
Now I'm trying to read shutter speed, and focal lenght. And try to figure out wath happend when I press the shutter button half way.

@Foldesa

Tried ISO 4000, 5000 but image completly dark or had vertical lines. So I think 400d can not go behind ISO 3200 limit.

I find out that after turn on Canon Factory mode (EnterFactoryMode,0xFF828148), you can change iso on the fly, don't have to wait 4 sec. until  the viewfinder's display turn off.

Have you got any progress on shutter speed hack?

« Last Edit: 12 / June / 2009, 08:16:07 by thaibv »
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Offline Foldesa

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Re: Eos 400d ( Rebel XTI )
« Reply #15 on: 12 / June / 2009, 11:57:16 »
Yep, I also faced the problem with iso higher then 3200. This must be the maximum of the sensor.
The past few weeks I had very little time :( My tries vere mostly adding/replaceing strings in the system menu. No success.  Now I'm tring to catch, waht happend when the camera is turned on, and laguage packs are initialized.
Meanwhile can we see your source for spot met., Factory mode atc?
Regards
A

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Offline PhyrePhoX

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Re: Eos 400d ( Rebel XTI )
« Reply #16 on: 12 / June / 2009, 16:21:04 »
nice progress guys. do you have some example images taken with the "new" iso ranges? probably in raw? can you upload them somewhere, please?

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Offline Foldesa

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Re: Eos 400d ( Rebel XTI )
« Reply #17 on: 12 / June / 2009, 18:18:55 »
All the iso settings from 32 to 3200 can be used with raw format. I've posted a code before, but if you tell me ( us ) what iso you want I can post a specific code and bin for you.
Regard
FoldesA

Sorry. You mean imeges. Tomorrow I will add some link for different ISO settings. I guess you are interested in iso 3200 for noise :)


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Offline PhyrePhoX

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Re: Eos 400d ( Rebel XTI )
« Reply #18 on: 12 / June / 2009, 18:27:46 »
yes, iso3200 and also the (new) low iso range :)

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Offline thaibv

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  • Canon 400d: Spot, ISO 3200 and more
Re: Eos 400d ( Rebel XTI )
« Reply #19 on: 12 / June / 2009, 23:59:39 »
Hi again,

   Here are links to my code and bin file.
Bin: http://www.filefactory.com/file/ag6fd49/n/AUTOEXEC_BIN
Code: http://www.filefactory.com/file/ag6fd5c/n/autoexec_bin_rar

   Now you can change ISO and Spot metering mode separately.
Press Direct print to change iso on the fly,  press  Direct print while holding down AV+- button change Mettering mode to Spot.

   Press Drive mode button while holding down AV+- button turn on Factory mode. You will see Factory menu appear in the camera's main menu 1. Try Factory menu does not harm your Cam.

Note: Sometimes, it hang my 400d  and I have to turn it off then back on  and rarely have to remove the battery to restart.
« Last Edit: 14 / June / 2009, 09:43:36 by thaibv »
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