nightshots - time exposure.

[Nanotech9]

from my new car camera mount (home-made of course)...

teaser:
http://www.nanotech9.com:180/modules/My_eGallery/gallery/artisticcrap/nightshots/nightshot4.jpg


Just click on "Artistic Crap" and the subsequent folder for the rest of the pics... (http://www.nanotech9.com:180/modules.php?name=My_eGallery)

[BigJon]

Hmmmm....shouldn't you be driving instead of taking pictures? :hmm:

j/k! Nice shots anyways!

[Burzhui]

which camera? Camedia?

[Nanotech9]

this is the camera mount - homade from aluminum barstock, drilled and tapped, etc. This pics wants finished, but almost (lacked two center bolts).

http://www.nanotech9.com:1088/images/bmw/camera-mount.jpg

I mount a Olympus C700 on there. from 5 to 10sec exposures.

[DoPeY5007]

all I see is your Avatar and that looks cool, I may be blocked here @ work :hmm:

[Nanotech9]

Originally posted by DoPeY5007
all I see is your Avatar and that looks cool, I may be blocked here @ work :hmm:

humm. I dont know how they would know to block my address - its running off my cable modem at the house.

Here i'll host it off my server here at work:

http://nanotech9.com/images/bmw/nightshot4.jpg

[coleslaw]

Those shots are really cool nano. Time exposure is the only feature that my digital camera is lacking. :(

[DoPeY5007]

Originally posted by Nanotech9


humm. I dont know how they would know to block my address - its running off my cable modem at the house.

Here i'll host it off my server here at work:
wow that does look cool, I donno why your pics don't show up when I am @ work, your sig as well :shrug:



I will have to look @ the rest of them later tonight.... ;)

[SonyGuy]

Neat pics Nano! Back when I lived with my parents, they had an Olympus D620 I think and it was a great camera. Only thing I didn't like about it was the fact that it could be really picky about the picutres it would take. If it was too dim, it wouldn't take the picture or if it couldn't focus right etc. etc. Anyways, thanks for sharing them with us.

[eSDee]

Very impressive Nano.

[Memo]

Awesome pictures man. I don't know if my camera can do that. Nice southern-engineering on the camera mount too ;)

[Ladogaboy]

Nice pic Nano...

:hmm: It's good to know that they have time exposure in some dig cameras... grrr, just one more feature to think about...

[Nanotech9]

yeah - i took about 4 months to settle on this camera. I just rescently discovered it also has a rapid-shoot mode... it'll shoot 7 1600x1200 pictures in a row in about 6 secs. Just hold the button down after turning the function on. You can also have it re-focus after each pic too - makes a just a little slower.

I'm gonna have to try this next autocross and see if i get some neat shots.

I've been VERY happy so far. I even use the camera / memory to transport files from home to work somethimes.

[styleee]

hm, i wonder if in digital cameras you have to compensate for reciprocity failure.

any takers?

[Nanotech9]

ok, explain what the hell a reciprocity failure is and then maybe i can answer the question? heheheh.


You can tell how much i know about photography cant you?

seriously, explain it and maybe i can answer.

[Nanotech9]

ok, i just read this (http://www.photographytips.com/page.cfm/454) and i'm pretty sure theres no under-exposure or problems with teh color balance.

digital cameras (mine at least) will auto-adjust the shutter speed from 100 to 800. (i can adjust it manually too). I can manually adjust the f stops, and length that the shutter stays open up to 16secs for time exposure. I'm not sure how film speed and shutter opening length is different on a digital camera, but i guess it is.

also, since your never changing brands or types of film, then it should always take consistent time-exposure pics.

now, i do NOT have a light meter, nor know how to calculate f stops and apatuer openings, so i could be completely wrong on this.

[styleee]

when you expose film to light for long periods of time (depending on the speed of the film, anywhere from a few seconds to a few minutes....

um this is harder to explain then i thought, i guess i should start w/ when film is exposed. when flim is exposed, the silver in the flim is changed (i can't remember what its called, its been a long time.) if its exposed for a longer time, then the silver reverts back to its orignal unexposed state. so to make up for it you have to usually double your exposure to get the correct one. eg, if its supposed to be a 30 sec at f2.4, you make it 60 sec at f2.4 or 30 sec at f2.

so my question is on a digicam, does that happen. my guess would be no, but it could be different for every camera.

[Nanotech9]

yeah - since its digital i dont think it reverts back. I'm pretty sure the answer is no, at least on my camera. but then again, like i mentioned above (i know you hadn't read it before you posted) i dont know how to calculate f stops etc.

[styleee]

Originally posted by Nanotech9

now, i do NOT have a light meter, nor know how to calculate f stops and apatuer openings, so i could be completely wrong on this.

first lesson: f stops are the aperture opening. f2 = 1/2 the radius of the lens, f16= 1/16, etc. and its all exponentional.. f5.6 is twice as open as f8, and half as open as f4. the larger the fstop #, the smaller the hole, and the sharper the pic w/ more depth of field.
thats all you have to know!

:)

[Nanotech9]

so if its a nice bright day, and i want to take a pic of my car with it adn teh background, and maybe foreground in focus, then i use the highest f stop i can (?) and compensate with a lower film speed (like 100).

and if i want just the car in focus, and not the fore or background, then i use a lower f stop and set the film speed faster right?

[styleee]

Originally posted by Nanotech9
so if its a nice bright day, and i want to take a pic of my car with it adn teh background, and maybe foreground in focus, then i use the highest f stop i can (?) and compensate with a lower film speed (like 100).

and if i want just the car in focus, and not the fore or background, then i use a lower f stop and set the film speed faster right?

yep, exactly :)

[styleee]

actually, film speed has more to do with lighting conditions. the higher the flim speed, the more grain you have, so usually you want to shoot the lowest that will work for your situation. if you are shooting a still life, like your car, then it doesn't matter how slow the film is, just use a tripod.

and film is exactly like the f/stops and shutter speed.

if u have an image that is 1/30 sec at f8 on 100 speed film, it will be 1/60 at f8 on 200 ISO, and 1/125 at F8 on 400 ISO film. it all depends on what your shooting.

and a little tip, if u over expose higher speed film by about 1/2 a stop, you'll get better saturation of color. :)

[ZrEo0]

http://www.theforumisdown.com/uploadfiles/052102/DSC_0241.jpg

http://www.theforumisdown.com/uploadfiles/052102/DSC_0202.jpg

http://www.theforumisdown.com/uploadfiles/052102/DSC_0185.jpg

[ZrEo0]

ZrEo0: Please resize the pictures. 1600x1200 is too big. ;)

http://www.theforumisdown.com/uploadfiles/052102/IMG_1822.JPG

http://www.theforumisdown.com/uploadfiles/052102/IMG_1824.JPG

http://www.theforumisdown.com/uploadfiles/052102/IMG_1825.JPG

http://www.theforumisdown.com/uploadfiles/052102/IMG_1842.JPG

[DoPeY5007]

Originally posted by cpugeek04
ZrEo0, put down the glow stick, and step away from the computer he was playing while I was DJ'n Friday night :heh: