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350d boot from cf card

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Re: 350d boot from cf card
« Reply #260 on: 10 / September / 2010, 21:01:21 »
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That is true! Thanks for the tip.
Although it would have been nice to have that extra 2 f stop without having an extra filter.

Edit:
After looking into the ND filers i learned if you add two polarisers together and rotate the front you can get an infinitely variable ND from 4x to very strong
« Last Edit: 10 / September / 2010, 21:29:08 by ZZOLDI »

Re: 350d boot from cf card
« Reply #261 on: 10 / September / 2010, 22:09:10 »
Yeah, but the "front" polariser (the one furthest away from the camera) should be a linear polariser (not a circular) for best effect in that case. It's not a perfect setup, but it might be worth experimenting with.

Re: 350d boot from cf card
« Reply #262 on: 11 / September / 2010, 04:54:08 »
wait, there are 10 stops ND filters? where to buy one, guys?

yes, ISO values lower than 100 would be really really cool, but don't work. apparently the sensor (actually the electronics that read out the data from the sensor) can only go from 100 to 3200.
values less than 100 get processed right in the camera, ie if you set ISO to 50 the camera will take the shot with two times the exposure but the shot will be overexposed. the sensor doesn't go below the 100.


ZZOLDI: thank you for writing up everything! yes the issue that required pressing SET and some of the other buttons twice is gone, you can edit your post and delete that part.
the maximum values for review time and auto power-off are user settable in the file user_settings.txt, they are not fixed to 30 s and 60 min.

the menu order can also be set and items that you don't need can be left out.

the last menu point ? is based on a mistake by me, I accidentally left an experimental menu item in the settings when I build the version to upload, you can delete that in your post also, won't be there in the next version


have you got any further requests/suggestions?

what I'm planning: a timer function (like I already posted) but it doesn't work the way I expected it would, so I haven't worked on this in the last days. I still have some ideas to try, I guess I can get it to work sooner or later.
flash exposure bracketing: I tried to do it but it doesn't work.
I tried to include the control dial in the INFO menu, but it doesn't work.

what would be really cool: auto ISO like they have in the code for the 400D. don't know yet if I can do it.

Re: 350d boot from cf card
« Reply #263 on: 11 / September / 2010, 05:05:54 »
oh and btw I just found out the correct english term is AF assist beam and not helping light ;) I didn't know what to write so I made this up. you can edit that, too  ;)


Re: 350d boot from cf card
« Reply #264 on: 11 / September / 2010, 06:34:16 »
wait, there are 10 stops ND filters? where to buy one, guys?
9 stops, 10 stops, it all merges together... :)
Hoya NDx400

B+W make some pretty dark filters too (I have a B+W 6-stop).

Re: 350d boot from cf card
« Reply #265 on: 11 / September / 2010, 07:18:00 »
wow that's pretty cool and not even that expensive
maybe I can afford one one day
« Last Edit: 11 / September / 2010, 08:01:39 by crazyklaus »

Re: 350d boot from cf card
« Reply #266 on: 12 / September / 2010, 04:41:27 »
hello!
is it possible to do time lapse with mirror lock-up and exposures longer than 30 seconds?
Sorry for my English.

Re: 350d boot from cf card
« Reply #267 on: 12 / September / 2010, 04:51:50 »
sorry, but I think for exposures longer than 30 seconds you NEED a wire release (or something that is plugged in the wire release connection, can of course also be a wireless remote control).
I believe there are remote controls that can do a time-lapse.


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Re: 350d boot from cf card
« Reply #268 on: 12 / September / 2010, 05:23:41 »
Saw the 550D was announced yesterday with some sort of configurable AutoISO. Some questions to you clever guys:
Is it possible to make the "autoexec.bin" perform any actions when the shutter button is pressed/pressed halfways?
Is it possible to read the Focal length after focusing and print it as part of the Info together with the other options?
Asked this some time ago. First part seems solved in the timelapse by crazyklaus.
If the focal length could be obtained it could be used to calculate an appropriate ISO setting = AutoISO.

Re: 350d boot from cf card
« Reply #269 on: 12 / September / 2010, 05:36:57 »
hey, I didn't do the timelapse, it's by MilanC  :)
don't know yet if it is possible to "perform actions" when the shutter button is pressed, don't know yet if it's possible to read out the focal length.

 

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