Eos 400d ( Rebel XTI )

KiRA

it would be nice if u would incorporate to set/choose from different timer values, 80% 10s on timer is too much 🙁
put 2,5,10 or at leat 5,10
thanks

hobbes

wtm0325

Saturation - next higher value for Maximum Auto ISO

Saturation value - from 0 to 4

ISO Range - 16, 32, 40, 50, 80, 100, 125, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1250, 1600, 2000, 2500, 3200

Example 1: If Contrast value is -1 (ISO 100), Saturation value is 1, the maximum ISO value is 125. (see ISO Range above)

Example 2: If Contrast value is 1 (ISO 400), Saturation value is 4, the maximum ISO value is 1000. (see ISO Range above)

I don't really understand what this "next higher value for maximum auto ISO" is. wtm0325, kann you explain this to me? The max auto ISO value, I get, it works pretty well. But if he auto ISO range is already defined by the contrast parameter, what does this "next higher value for max auto ISO" do?

By the way, I am also unable to use the minimum shutter speed: I have the auto ISO on, I'm in P mode, I go to M mode, set the shutter speed to 1/60th, then go back to P mode, and the shutter speed goes to 1/30th and slower...

Also, the auto ISO refuses to use ISOs below 100. Not a big deal though.

This details aside, thank you SO MUCH for this. I've been looking up my emails, and I wanted the auto ISO in the programmable modes and the minimum shutter speed since 2008 already, I can't believe I discovered this hack only 2 weeks ago.

Sergei

rocky
I cant seem to get the min shutter speed to work in auto iso by following instructions above. Any ideas?

AutoIso calculates ISO only when shutter speed is showing on the screen and can change ISO if no buttons is pressed. So you have to press shutter button half way and release it.

wtm0325

hobbes

wtm0325

Saturation - next higher value for Maximum Auto ISO

Saturation value - from 0 to 4

ISO Range - 16, 32, 40, 50, 80, 100, 125, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1250, 1600, 2000, 2500, 3200

Example 1: If Contrast value is -1 (ISO 100), Saturation value is 1, the maximum ISO value is 125. (see ISO Range above)

Example 2: If Contrast value is 1 (ISO 400), Saturation value is 4, the maximum ISO value is 1000. (see ISO Range above)

I don't really understand what this "next higher value for maximum auto ISO" is. wtm0325, kann you explain this to me? The max auto ISO value, I get, it works pretty well. But if he auto ISO range is already defined by the contrast parameter, what does this "next higher value for max auto ISO" do?

By the way, I am also unable to use the minimum shutter speed: I have the auto ISO on, I'm in P mode, I go to M mode, set the shutter speed to 1/60th, then go back to P mode, and the shutter speed goes to 1/30th and slower...

Also, the auto ISO refuses to use ISOs below 100. Not a big deal though.

This details aside, thank you SO MUCH for this. I've been looking up my emails, and I wanted the auto ISO in the programmable modes and the minimum shutter speed since 2008 already, I can't believe I discovered this hack only 2 weeks ago.

The purpose is to set special ISO value since Contrast value cannot do that e.g. If you want to set maximum ISO to 250, contrast value will be -1 and saturation value will be 4.

Example 1:
If Contrast value is -1 (ISO 100),
Saturation value is 1, the maximum ISO value is 125.
Saturation value is 2, the maximum ISO value is 160.
Saturation value is 3, the maximum ISO value is 200.
Saturation value is 4, the maximum ISO value is 250.

Example 2: If Contrast value is 1 (ISO 400),
Saturation value is 1, the maximum ISO value is 500.
Saturation value is 2, the maximum ISO value is 640.
Saturation value is 3, the maximum ISO value is 800.
Saturation value is 4, the maximum ISO value is 1000.

Always refer to the ISO range,
ISO Range - 16, 32, 40, 50, 80, 100, 125, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1250, 1600, 2000, 2500, 3200

And thanks Sergei, I tried to refocus but it still doesn't work if the ISO is too low.

Sergei

wtm0325
And thanks Sergei, I tried to refocus but it still doesn't work if the ISO is too low.

Lower than 100? It will not work if ISO was set manually lower than 100 when AutoISO was enabled.

hobbes

wtm0325
The purpose is to set special ISO value since Contrast value cannot do that e.g. If you want to set maximum ISO to 250, contrast value will be -1 and saturation value will be 4.

Thank you, now I understand. You can't set the maximum auto ISO value to 640 with only the "contrast" parameter. The contrast parameter only allows me to set the max auto ISO value to "classic" ISO values like 100, 200, 400, 800, 1600 or 3200, not to an intermediary ISO value.

Other question: does the auto ISO in programmable modes only work if the LCD is on and display the "display" informations? I have the impression it won't work when the menu is displayed or when the LCD is off. Do I understand correctly that it is because the "custom firmware" has to read the shutter speed from the LCD to automatically adjust the ISO value?

pugwash

Sergei

rocky
I cant seem to get the min shutter speed to work in auto iso by following instructions above. Any ideas?

AutoIso calculates ISO only when shutter speed is showing on the screen and can change ISO if no buttons is pressed. So you have to press shutter button half way and release it.

Thanks for that Sergei - success! I have my AF set to the * button and was previously pressing the * button, holding it pressed, and then pressing the shutter button without releasing anything.

Now I'm pressing the * button, getting the AF, and releasing it before pressing the shutter button to take the photo and the autoiso is working the way I would expect. Did some trials and the only time the shutter speed dropped below the minimum I had set was when the ISO had ramped up to the max value I had set and the exposure still needed more light. Just what I would expect.

Once again many thanks.

spmy2792

Hello All,

I'm new here. I tried out the firmware hack and found it worked pretty much as you stated, thank you so much. I found only the AEB does not seem to work correctly as for the number of shots, it does not matter what I setup in the Sharpness value to modify the number of bracketed shots; I only got 3 shots but the AEB values works fine (AEB values based on Color tone value). Did any of us here successfully tried this? I'm not sure what I missed but your help would be very much appreciated. I'm very interested in this modified AEB to get a wider range of exposure for HDR images.

Thanks again.

Steve

pugwash

spmy2792
Hello All,

I'm new here. I tried out the firmware hack and found it worked pretty much as you stated, thank you so much. I found only the AEB does not seem to work correctly as for the number of shots, it does not matter what I setup in the Sharpness value to modify the number of bracketed shots; I only got 3 shots but the AEB values works fine (AEB values based on Color tone value). Did any of us here successfully tried this? I'm not sure what I missed but your help would be very much appreciated. I'm very interested in this modified AEB to get a wider range of exposure for HDR images.

Thanks again.

Steve

As far as I am aware this hack only allows you to change the value of the AEB exposure and not the number of AEB shots which is set by Canon at 3. There is a post above which proposes a way of altering the number of AEB shots but it is only that........a proposal. Maybe a future version will incorporate it.....that's my understanding at least.

vit40

Hi,

Checked this thread after several months, because I don't use my 400D very often. I see there are some new features. Great

I noticed a small issue, don't know wheather it was discussed before, because this thread is quite long. So, on 400D, you can check the focus of the picture immediately after taking the shot, without entering playback mode. For this, you should press +/AF point button and Print button the same time. With this hack, it unfortunately also changes ISO (from 100 to 125 for instance)

Is there any possible solution for this?

spmy2792

Ahha. I see. Thank you pugwash.

guffster

pugwash

spmy2792
Hello All,

I'm new here. I tried out the firmware hack and found it worked pretty much as you stated, thank you so much. I found only the AEB does not seem to work correctly as for the number of shots, it does not matter what I setup in the Sharpness value to modify the number of bracketed shots; I only got 3 shots but the AEB values works fine (AEB values based on Color tone value). Did any of us here successfully tried this? I'm not sure what I missed but your help would be very much appreciated. I'm very interested in this modified AEB to get a wider range of exposure for HDR images.

Thanks again.

Steve

As far as I am aware this hack only allows you to change the value of the AEB exposure and not the number of AEB shots which is set by Canon at 3. There is a post above which proposes a way of altering the number of AEB shots but it is only that........a proposal. Maybe a future version will incorporate it.....that's my understanding at least.

Yep, that would be me requesting a new feature (# of shots for AEB other than default of 3 from Canon).

I soon realized that my proposed method for this new feature was not possible since the Sharpness value was already being used for something else. In addition, if the Sharpness value was used to determine the number of exposures to take (AEB) then this feature when activated with the print button would only work with the new add'l AEB values that Sergei added and not any you could set with your 400D's normal AEB setting. It sure would be nice to have this feature one day but I'm not sure how to propose doing it yet.

I really like all the great features that have been added for the 400D and I continue to check this thread daily hoping to find even more features and improvements.

Thanks to all for the hard work.

jodela

Dear group,

First of all, I hope I'm posting this in the right place and I didn't miss the answer somewhere
(I was pointed to here from the 'newbies' forum)

I'm having a Canon EOS400D , and every now and then I would like to use it's automatic mode, still having access to the raw file. Normally raws are only available in creative modes (P,Tv,Av,M).

The P mode is close, but not the same as automatic (for me the major difference it's the absence of automatic ISO choice).

Does CHDK allow me to get raws, even in Auto mode ? Or is that a foreseen/conceivable/impossible enhancement ?

Many thanks for your feedback,

Jos

Sergei

http://www.filefactory.com/file/b1e9b7b/n/autoexec_2010-05-29.zip
Added Safety Shift. To enable - go to "AF mode" and press print button. Double red light - enabled, single red - disabled. AutoISO was removed from this bin. It was to slow to be usable.

KiRA

hello, no one said nothing so i'm asking again if you please could make a option for the timer.
you all know the timer is 10 seconds, so i'm asking if you could change the timer to select 2s, 5s, 10s or 2s, 10s.
thx in advance

and please do define this "Safety Shift" 😁

tungdil

KiRA
hello, no one said nothing so i'm asking again if you please could make a option for the timer.
you all know the timer is 10 seconds, so i'm asking if you could change the timer to select 2s, 5s, 10s or 2s, 10s.
thx in advance

and please do define this "Safety Shift" 😁

Hi!

I am quite new to CHDK and the forum but think it is really great!

Actually I was also wondering about "safety shift" and after some "Google-Engineering" and testing I believe it is for "TV" and will adjust the shutter speed if your selected shutter-speed is too short or too long instead of just flashing the aperture number and taking an overexposed or underexposed picture.

For example setting shutter-speed to 1/100 where 1/20 would at least be necessary @ min. aperture ( e.g. 2.8 ) without "safety shift" the 400D will flash the aperture number and, if you take the photo it will be too dark. With "safety shift" the shutter speed will automatically be adjusted to 1/20.

I hope this explanation is correct. At least this is what I found out when trying to use it.

Cheers,
Tungdil

Sergei

KiRA
hello, no one said nothing so i'm asking again if you please could make a option for the timer.
you all know the timer is 10 seconds, so i'm asking if you could change the timer to select 2s, 5s, 10s or 2s, 10s.

Can't make that option. I didn't find where timer value is stored.

pommesgabel

Probably it's a constant int somewhere - or even worse - directly integrated in the timer function that 10 is always the value... :s

Erm yeah, thanks to y'all again, I love all the stuff you worked out!
Safety Shift is also quite great. Saves me from ruining a nice picture out of setting-stupidness I set in advance, if you know what I mean. Especially when I have moving objects in a great pose and the picture is all white or all black, I get in some kind of sad rage x)

A question:
Where's the guide about the Factory Mode and how to use it again? I don't find it.

TomBStonE

Good Job man.

Problem with "" Safety Shift" it is because I am with a speed of reduced shot and my photos of bike are therefore vague, the auto iso has as advantage not to reduce my speed of shot.

The best would be to have the auto iso first and then "Safety Shift", finally I think.

ave

KiRA
hello, no one said nothing so i'm asking again if you please could make a option for the timer.
you all know the timer is 10 seconds, so i'm asking if you could change the timer to select 2s, 5s, 10s or 2s, 10s.
thx in advance

If you enable mirror lockup from the custom functions, timer will be only 2 seconds.

This is a stock firmware feature! Very handy. Probably put in because keeping the mirror up consumes battery.

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