Firmware hack Rebel XTi /400D enables ISO 3200, Spot metering!

[clb]

Originally Posted by WaltA

Have you installed the new autoexec.bin?

Heres the instructions for configuring the JUMP button

Config. Buttons: In this sub-menu, users can configure the behavior of some special buttons:

• Better DISP button: When active (set to Yes), the DISP button will change the display brightness in small increments, instead of just switch it on/off.
• JUMP: Assign an action to the JUMP button while in the main dialog:
  • Intermediate ISO: bump ISO by 1/8 EV (see Notes / Extended ISOs).
  • Repeat last script: repeat last script executed.
  • Mirror lock-up: toggle the MLU option on / off.
  • AEB: Roll the AEB separation from 0EV to 1EV, then 2EV, and then back to 0EV (off).
• TRASH: Same as the JUMP button.

I have attached a screen shot of the user guide.

Thanks Walt
Yes I do have the new BIN installed . Gave up yesterday trying to get the guide but tried this morning and got it Will be giving it a workout later this afternoon.
Thanks again for your reply, Chuck

[jonneymendoza]

Originally Posted by WaltA

new build released today.

link?

[WaltA]

Originally Posted by jonneymendoza

link?

http://code.google.com/p/400plus/dow...e%3DExecutable

[jonneymendoza]

link is a bit slow on my side but whats the improvements/new features of the new build?

[WaltA]

Originally Posted by jonneymendoza

link is a bit slow on my side but whats the improvements/new features of the new build?

================================================== ==================================

Long Exposure Calculator¶
The long exposure calculator is a tool created to help the photographer quickly determine the exposure time required by a particular scene. The idea behind the long exposure calculator is that you can quickly measure a scene using a high ISO and a large aperture, then lower the ISO value and reduce the aperture, but increase the exposure time accordingly.

For example, let's suppose we want to photograph a night scene; we decide to use the lowest possible sensitivity (ISO100), to avoid noise, and a relatively closed aperture (f/8), to get the depth of field we need. Using those parameters, the exposure time needed may easily overpass 30 seconds, and thus we cannot use the camera to make a reliable measurement.

But we can temporarily select a high sensitivity and large aperture (ISO1600 and f/2.8, for example), measure the scene, and determine we would need a 15-second exposure with those parameters. Then we enter the long exposure calculator, lower the ISO value to 100, and close the diaphragm to f/8; the Ev indicator will display a value if -9, meaning that with the current parameters the exposure is 9 stops below the measured value. We can now increase the exposition time until the Ev indicator goes back to 0, meaning the current parameters would result in the same exposure than we had at the beginning; in our case, that means raising the exposure time from 15 seconds to 32 minutes. Finally, just press "Apply" to configure the camera with these parameters, and launch the long exposure script.

NOTE: The long exposure calculator will only apply the values presented on the display when the exposure time (Tv) is one minute or longer; for shorter exposure times, the "Apply" button will simply be inactive.

TIP: If you plan to use a ND filter, you can measure the scene without the ND; then enter the long exposure calculator and adjust the exposure to get an Ev result inverse to the value of the ND filter. For example, assuming we have an ND8 filter (8 steps of light reduction): if the camera measures 1/120s f/4.0 ISO1600 without the filter, then select 2' f/8.0 ISO100 to achieve a Ev of +8.

DOF Calculator¶

The DOF Calculator can help determine the depth of field of a scene, or the range of distances that will be photographed as sharp; for more information about this concept, please visit DOF Master.

After entering the DOF Calculator, set the focal length of your lens, the aperture you are using, and the distance from the camera to the subject. The script will then display the near and far distances of acceptable sharpness. You can now change the aperture and / or the focusing distance until the depth of field displayed matches the part of your scene that you deem as important and want to remain in-focus.

When the "Max. DOF (m)" entry displays "INF!", the hyperfocal distance has been reached, and thus everything from the near distance of acceptable focus up to the infinity will be sharp.

ISO AEB

Camera will make a photograph for each ISO configured.

You probably want to set the camera to M mode prior to using this script.

Extended AEB¶
This script performs the same task as the standard AEB option from the camera, but with a few nice enhancements:
•Up to 9 shots may be specified.
•The separation between shots is configurable up to +-6 EV.
•The camera will take all the shots in a sequence, automatically.
•User can specify the direction of the sequence.


Supposing a configuration of 5 shots at 1EV separation, this is how each direction is supposed to work:
•+/- : One photo at current EV, and the rest above and below it: 0EV, +1EV, -1EV, +2EV, -2EV.
• + : One photo at current EV, and the rest above it: 0EV, +1EV, +2EV, +3EV, +4EV.
• - : One photo at current EV, and the rest below it: 0EV, -1EV, -2EV, -3EV, -4EV.


In 'M' mode with the aperture value set to BULB, this script will fire the camera as many times as needed (in this mode, the number of shots configured is irrelevant), with shutter speeds ranging from the "Bulb min:" value to the "Bulb max:" value, separating each shot by the "Step (EV)" value. Notice also that exposure times as long as 32 minutes can be used in this mode.

[WaltA]

For those of you that downloaded the last feature release mentioned there were some bugs found and fixed.

20120415-4
•Fixed a bug (options not being saved when leaving the menu) introduced in 20120415-3.


20120415-3
•Fixed a typo.
•Fixed a bug when closing the menu.
•Fixed the AF dialog when pressing DISP.


20120415-2
•Fixed a bug in the page navigation.


20120415-1
•Updated Russian translation.
•Fixed a bug in the page reordering submenu.


New versions available now here
http://code.google.com/p/400plus/dow...e%3DExecutable

[Shutterwolf]

Well crap... i went to try this, but my camera is the only thing i have for reading a CF card, so guess im SOL until i can get a proper card reader.

[Blue-J]

I cannot get this installed. The original instructions fails with cardtricks, as there is no way to "tick" anything in it!

[WaltA]

Originally Posted by Blue-J

I cannot get this installed. The original instructions fails with cardtricks, as there is no way to "tick" anything in it!

When you formatted the card, did you use NTFS, FAT or FAT32? Did you format it in the camera or on your PC?

The newest instructions on the 400plus site say to use EOScard. I did mine long time ago and used the older Cardtricks.

I know its a pain but this problem has shown up somewhere in this thread but I'm pretty sure its because if your card is 4GB or higher it must be FAT32

You might want to try using the newer EOScard if that doesn't work.

[Docthomas]

OK got the new bin installed and it is pretty nice. using the jump button for the ISO incrementals and that seems to best compromise.

I am trying to get A-Dep to work though. I set a preset, in this case an ISO of 3000, spot metering and an EV of +2/3 and then I save it . all works well as a starting point for low light high ISO pics but then when I switch out of A-DEP I have all my AV and ISO settings still. ISO is an easy fix but the AV not so much. so I set up a "default" preset. but that is still several clicks into the screen to reset the preset and then it remembers THAT preset as the LAST one the next time I'm in A-dep.


powering off/on does not reset the settings. So what is the best way to switch between A-dep and "default" having to manually reset after a preset change kind of negates the need for the A-dep button if it doesn't reset.

also cannot get ISO in the view finder but not a huge deal to me. I wanted AEB and ISO and possibly A-DEP the rest is unneeded for me.

Thanks for any help

Shawn

[WaltA]

Did you read thru the Users Guide for A-Dep and presets? I don't use it so can't help you. Maybe others on here can.

ISO in the viewfinder only works if you change the ISO while looking thru the viewfinder.

Don't use that one either.

[Docthomas]

Yes I did and it's not quite clear, thus the reason I came here. ISO not important to me in viewfinder but I'd like to use the A-DEP

[Blue-J]

Originally Posted by WaltA

When you formatted the card, did you use NTFS, FAT or FAT32? Did you format it in the camera or on your PC?

The newest instructions on the 400plus site say to use EOScard. I did mine long time ago and used the older Cardtricks.

I know its a pain but this problem has shown up somewhere in this thread but I'm pretty sure its because if your card is 4GB or higher it must be FAT32

You might want to try using the newer EOScard if that doesn't work.

Card is an 8GB FAT32 CF. I could make it NTFS but can the camera then read it?

As for new cards, I'd have a hard time getting a new CF card. What is an EOScard, and is it CF? How would it work it work in the XTi?

[WaltA]

Originally Posted by Blue-J

Card is an 8GB FAT32 CF. I could make it NTFS but can the camera then read it?

As for new cards, I'd have a hard time getting a new CF card. What is an EOScard, and is it CF? How would it work it work in the XTi?

EOSCard is the software that replaces Cardtricks. It makes your card bootable.

[WaltA]

Originally Posted by Blue-J

Card is an 8GB FAT32 CF. I could make it NTFS but can the camera then read it?

No - the user guide specificall states if its bigger than 4GB you need to do FAT32

I would suggest going to the google site and using the EOSCard software