daniel hayduk

Thanks Berg!

<br><Br>

/daniel

Wow, thanks for all the responses everybody! No it is not modified, so I guess the real

question is what the high pass IR filter permits (that's what I get for posting when I'mm

tired!) - and I haven't been able to find the

answer. My impression is that for IR most lenses let everything fly, they just have UV

protection. I could be wrong though!

<Br><Br>

Thanks again,

<br><br>

/daniel<br>

I am doing a school physics project on infrared photography (don't you love it when you

can put

enjoyment into something boring) and I need to know the maximum wavelength (nm) that

the CCD on my D100 is capable of recording. Since the D100 can record IR, it is clearly

above 700 nm... but how far does it go? As far as I have tested, it cannot record things in

MWIR (Mid Wave IR) which is the thermal zone (3000-8000 nm). Does the CCD record SWIR

(Short Wave IR - 1400-3000 nm) or just NIR (Near IR - 700 - 1400 nm) which I know it

can? If it doesn't go beyond NIR how much of NIR can it record? I have a Hoya R72 filter,

so it does 720 nm...

<br><br>

I would really appreciate it if someone could help me out. The project is due on January 5

- so please hurry!

<br><br>Thanks,<br><BR>

/daniel

<br>

That should read: as there is no propellant.

<br><br>

/daniel

To add onto Jean Berard's post...As an alternative to canned air, you can (so I've been told) use canned CO2, as there is not propellant.

<br><br>

/daniel

Just a FYI:

<br><br>

Sensor Cleaning - All right, everyone agrees that dirty sensors are a pain, but everyone doesn't agree on right and wrong ways of cleaning them. Fine. Just don't believe the popular urban myth that blowing off the sensor while keeping the mirror up and shutter open with Bulb makes things worse. There's a popular story going around that doing this will actually attract dust to the sensor, since the sensor is being charged (you're making an exposure in Bulb, right?). When asked about that, one of the camera company's engineers laughed, saying you'd have to charge the sensor for about a week to build up enough charge to attract dust. End of that rumor, okay?

<br>

-http://www.sportsshooter.com/news/1215

<br><br>

Use a blower (w/out the bristles attached) to see if it is loose dust. If it is still there, use one of the many ways of swabbing your sensor.

<Br><br>

/daniel

Welcome to the asylum!<br>

I have the problem of having permanent grid lines in front of my eyes... ;)

<br><br>

/daniel

Thanks Dan!

<br>

Now that I have been pointed in the right direction, I have found it! It is not in the set-up menu, but in the CSM menu, under # 14 (AE-L/AF-L), then AF - ON.

<br><br>

/daniel

I've heard much talk about "back-button focusing" but have never been

able to find it's equivilant on my D100. Apparantly, you can set the

asteriks ( * ) button on Nikon cameras to be the focus button via

custom functions - but I see no asteriks nor do I see a place to set

the asteriks as the focus button! According to another source, the

Nikon equivilant of the 'back button' is "the AF-ON button-- the

little bumpy one beside the AE-L and AF-L one."

I am rather lost, as the D100 does not, as far as I can see, have

a 'little bumpy thing beside the af-l and ae-l.'

<br><br>

Can anyone help me?

<br><br>

/daniel