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dadisigursveinn / 400plus

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Extending the EAEB (Extended Automatic Exposure Bracketing) #347

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
The current EAEB (Extended Automatic Exposure Bracketing) is limited to maximum 
9 frames. Since I need more frames for a scientific project to generate enough 
data to be merged later in a single image with high bit-depth, in the file 
menuitem.h I have modified the line 269 from

#define MENUITEM_BRACKET(_ID_, _NAME_, _VALUE_, _ON_CHANGE_) MENUITEM_INT(_ID_, 
_NAME_, _VALUE_, false,    3,     9,   2,   2,  0, false, "%1u", _ON_CHANGE_, 
NULL)

to:

#define MENUITEM_BRACKET(_ID_, _NAME_, _VALUE_, _ON_CHANGE_) MENUITEM_INT(_ID_, 
_NAME_, _VALUE_, false,    3,    33,   2,   2,  0, false, "%2u", _ON_CHANGE_, 
NULL)

This allowed me to shoot up to 16 frames darker and 16 lighter than the central 
exposure value.

Setting more than 33 frames seems pointless because almost after 25 frames we 
expect the images on the extremes to be all black and all white.

Thanks.

Original issue reported on code.google.com by nicola.a...@gmail.com on 10 Jun 2014 at 11:17

GoogleCodeExporter commented 9 years ago 
More than 9 exposures is probably overkill for any "normal" use, but I am not 
against expanding the range.

On the other hand, won't it be easier for you to use the BULB mode for the EAEB 
script (see 
https://code.google.com/p/400plus/wiki/UserGuide#Extended_AEB_In_BULB_mode)? 
That way, you can define the start and end point of your sequence, and the 
script will make as many photographs as needed.

Original comment by eduardo....@gmail.com on 16 Jun 2014 at 8:11

GoogleCodeExporter commented 9 years ago 
According with the documentation, seems that in the "Extended AEB In BULB mode" 
you can only have 1EV separation between shoots, while with the above change 
you can have 1/3EV separation.

Original comment by nicola.a...@gmail.com on 16 Jun 2014 at 11:54

GoogleCodeExporter commented 9 years ago 
Yes, EAEB in BULB mode has a fixed 1EV separation; but that can change, too. 
Question is: do we prefer to have 32 shots in "normal EAEB", or a configurable 
separation in "BULB EAEB"?

Original comment by eduardo....@gmail.com on 16 Jun 2014 at 8:51

GoogleCodeExporter commented 9 years ago 
I personally prefer to extend the EAEB option since it is more intuitive and it 
is  very small change. Thank you for taking this into consideration.

Original comment by nicola.a...@gmail.com on 17 Jun 2014 at 11:09

GoogleCodeExporter commented 9 years ago 
We are moving to GitHub, please follow this issue at 
https://github.com/400plus/400plus/issues/347

Original comment by eduardo....@gmail.com on 16 Mar 2015 at 1:16