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06-01-2008, 11:56 PM
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#16 | |
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The future is unwritten
Join Date: Oct 2002
Posts: 71,105
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The descent of man ~ Nixon, Friedman, Reagan, Trump. |
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06-02-2008, 12:04 AM
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#17 |
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Major Inhabitant
Join Date: Apr 2008
Location: Raytown, MO
Posts: 120
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Dang, Mine isn't listed either. That really looked neat. I do get great pictures from mine already. Will have to get some recent city shots I took this weekend. Got a few interesting ones.
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May the Forest Be With You!! |
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06-02-2008, 08:48 AM
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#18 | |
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To shreds, you say?
Join Date: Aug 2004
Location: in the house and on the street-how many, many feet we meet!
Posts: 18,449
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The internet is a hateful stew of vomit you can never take completely seriously. - Her Fobs |
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06-06-2008, 12:48 PM
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#20 | ||
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Goon Squad Leader
Join Date: Nov 2004
Location: Seattle
Posts: 27,063
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I solved the problem (user error or poor defaults, take your pick) by debugging the program. There are two main variables that are user-settable, the number of steps and the step size. I chose the smallest step size and a large number of steps. My thinking was that I wanted the finest granularity for the blending process. This was overkill and my choices for the settings just overwhelmed the camera. Additionally, I moved a third variable, the delay between shots in tenths of a second, to the minimum value: 1. Another good idea for what makes up a good HDR image, minimum changes in the scene, but the kiss of death for this setup. The reason is the scripting happening in the camera is all quick and dirty, the commands are words for button pushes. That's how I finally debugged my problems. And by choosing 0.1 seconds to wait between exposures, I didn't give the camera time to finish capturing the image, writing it to the card, and getting ready for the next exposure. It would wait the 0.1 second, then "press" the next "button" to change the exposure, but the "press" would be invalid since the screen hadn't returned to the state where "right" meant "move the exposure indicator one unit to the right". This was a very valuable epiphany. Once I understood this, I saw another place where this was failing. By selecting Manual mode, I doomed the script to failure. Manually, I can change the exposure by altering the shutter speed or the aperture. But the script, as written, only chooses the exposure compensation button, the "delete" button (and let me tell you, that was a bit of a surprise to see "delete" as a button name and not a command. Nevertheless.) and then presses "right" or "left". The results are not as predictable in Manual mode. So, I tried it in Av (aperture priority mode) and Tv (shutter speed priority mode) and in P (program mode). In these modes, the "delete" (exposure compensation) button does move the cursor to the exposure compensation place on the screen where "right" and "left" decrease and increase the exposure (respectively). Now we're getting somewhere!
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Be Just and Fear Not. |
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06-06-2008, 01:09 PM
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#21 |
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Goon Squad Leader
Join Date: Nov 2004
Location: Seattle
Posts: 27,063
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The thing is, I haven't used these modes very much. As a consequence, I don't have much experience in getting a good starting point for the potential HDR sequence.
I have spent almost all my time in Manual mode, where I freely change the shutter speed, the aperture and the ISO level to achieve the desired result. And I depend on the live view from the display to show me what to expect. First problem. The display in Av or Tv or P mode doesn't seem to reflect what the shot will look like. It just shows ... nice. Good for framing. Zero help for exposure. I have experienced this in Manual mode too. But only when I have the flash set to On or Auto. Then, the display presumes that the exposure will be filled in adequately by the settings I'v chosen for the flash. This is *sometimes* correct, but most of the time it is wrong, sometimes spectacularly so. I have even used the stupidity of the camera in this area to show me the framing of something so dark and distant that my flash will never illuminate it, but is can be seen on the display. ha ha tricked the camera. Oh well. So, back to Av, Tv and P. What I think I'll be doing next is to take a test shot, "blind", as it were, and then switch to display mode where I will see the picture, as captured, not as compensated for or blown out or muddy dark, and then review the settings (of one baseline only!), take another picture, review, adjust repeat until adjust==zero. Now I'll have the initial setting for the HDR sequence.
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Be Just and Fear Not. |
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06-06-2008, 03:57 PM
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#22 |
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Your Bartender
Join Date: Jan 2002
Location: Philly Burbs, PA
Posts: 7,651
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Does it have a histogram display mode? That can help with the exposure sometimes.
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06-06-2008, 04:06 PM
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#23 |
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Goon Squad Leader
Join Date: Nov 2004
Location: Seattle
Posts: 27,063
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Yes.
Indeed, the chdk has a super-mondo version, which I haven't explored yet. It's called Zebra mode, where the overexposed parts strobe in the display. I think it's in the live view, I know the standard Canon interface offers that same capability in the verbose display mode.
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Be Just and Fear Not. |
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06-06-2008, 09:33 PM
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#24 |
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To shreds, you say?
Join Date: Aug 2004
Location: in the house and on the street-how many, many feet we meet!
Posts: 18,449
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After using this chdk for a few days, I dumped it. I really saw how canon did a great job with their user friendly software.
I was able to shoot in raw, but could only download the images if I took the card from the camera, not through the usb. and I could only see the raw images in picasa. photoshop wanted nothing to do with them and neither did canon's editing software. So not much good having a raw file... I am much less patient/skilled than big V when it comes to this compfuter stuff. Now if he were my neighbor I'd be getting a tutorial...
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The internet is a hateful stew of vomit you can never take completely seriously. - Her Fobs |
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06-07-2008, 10:47 AM
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#25 | ||
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King Of Wishful Thinking
Join Date: Jan 2001
Location: Philadelphia Suburbs
Posts: 6,669
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Exercise your rights and remember your obligations - VOTE!I have always believed that hope is that stubborn thing inside us that insists, despite all the evidence to the contrary, that something better awaits us so long as we have the courage to keep reaching, to keep working, to keep fighting. -- Barack Hussein Obama |
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06-07-2008, 10:57 AM
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#26 | ||
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King Of Wishful Thinking
Join Date: Jan 2001
Location: Philadelphia Suburbs
Posts: 6,669
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Exercise your rights and remember your obligations - VOTE!I have always believed that hope is that stubborn thing inside us that insists, despite all the evidence to the contrary, that something better awaits us so long as we have the courage to keep reaching, to keep working, to keep fighting. -- Barack Hussein Obama |
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06-10-2008, 08:43 PM
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#27 |
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Touring the facilities
Join Date: Nov 2002
Location: The plains of Colorado
Posts: 3,476
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06-14-2008, 12:14 PM
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#28 |
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Looking forward to open mic night.
Join Date: Oct 2006
Location: New Mexico
Posts: 5,148
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Everyone stop, case has been in the graphics again......lol! I can't wait to see what comes of her study! I accept free art case if you ever want to send it. Oh and when you need money pretty bad let me know so I can buy stuff. That's how I get all the great art. I, like other opportunists wait for financial discomfort because I can be a bit of a scumbag. But well, if you are low on groceries let me know. lol!
 (I get the best art because people are low on green sometimes) Terrible!!!!
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Show me a sane man, and I will cure him for you.- Carl Jung 
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06-14-2008, 02:56 PM
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#29 |
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Touring the facilities
Join Date: Nov 2002
Location: The plains of Colorado
Posts: 3,476
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Nah, I don't really do graphics...srsly. I just use gimp for formatting and adjusting photos of my art. I once had a friend come over and get raw images of my art, so I figured out the Gimp solution so I could work with them.
Cicero, your taking advantage of starving artists is naughty! I will let you know when I am destitute. 
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04-12-2012, 10:52 AM
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#30 |
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Goon Squad Leader
Join Date: Nov 2004
Location: Seattle
Posts: 27,063
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Time for an update.
When I first contributed to xoB's thread, I was using a Canon A710IS. This camera is still in use by TWILL (The Woman I Love), though she doesn't use CHDK. My main camera for the past few years has been a Canon G10. It's a much more capable camera than the A710, and a CHDK firmware file from CHDK for it has recently been made available. I have downloaded the file, unzipped it, and copied it to each of my two main sd cards (8gb class 10). Today I used it for the first time and I still love it. I was prompted to look at the chdk site again recently after posting some tilt-shift time-lapse movies for Clodfobble. The movies are easy to make if you have a long series of individual shots. To get those kind of shots, you need the ability to setup the camera and have it fire away at a regular interval. Turns out, chdk has a built in script that works like an intervalometer. Here's a movie I made using a one second delay producing some 200+ pictures, Picasa's movie making ability and youtube uploading. Pretty cool, and *super* easy. Next step will be to find a way to make the tilt-shift movies. Unfortunately, these images are not suitable for tilt-shiftification.
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