• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

Problem with blotchy spots w/studio lighting

A

Adam

[H]ard|Gawd
Joined
Jan 9, 2003
Messages
1,592
Okay. So the guy who used to use our studio lighting, is no longer with our company. And I have a slight problem. Sometimes when Im using the studio equipment (and this actually happens when im using a normal flash), i get these spots all over my pictures. I remember the old photo dude said somin about ISO or aperature size, i don't recall, but basically I used 2 studio lights with a sync cord, using a Nikon D1X camera. I set the lense to 11 (i forget what its called, the dial that goes from 2.8 to like 11 or so), ISO of 250 (i just told my light meter what i had set), and exposure of 500

1-.jpg

Full size image: http://www.adamdriven.com/junk/1.jpg

Anybody know whats causing this, what I can do to correct it? Should i change my aperature/ISO??? Any help is appreciated.
 
What you're changing is the F-stop value of your aperture. Basically it works just like your eye's pupil does, in changing the amount of allowable light through the lens.

Larger aperture (IE: F/2.8) = more light
Smaller aperture (IE: F/11.0) = less light

What the PROBLEM seems to be is a dirty sensor. Many will frown upon it, but I'd just use a can of air and see if you could blow it clean. *shrugs*
 
Whatcha mean dirty sensor? Where might that be??? The part behind the lense? We don't seem to have this problem outside the studio.
 
Originally posted by Adam
Whatcha mean dirty sensor? Where might that be??? The part behind the lense? We don't seem to have this problem outside the studio.
Click to expand...

The camera is basically a 'penta-mirror' design. The part I'm talking about is either the mirror, or the sensor. It's harder to find problem areas on a sensor when you take outdoor photos. The example you showed (photographing all-white backgrounds) is the most-resolveable way of finding problems.
 
So I should take the lense off and take a look. I think the mirrors might be dirty, i cant remember too much exactly, i just know the guy who used to take photos didnt take care of the equipment too well. Sucks cause its a $5,000 camera
 
Dust will eventually get on the sensor when you change lenses and also from normal use. I don't know how weather-sealed the D1X is but I know you need to clean the sensor. Get a bulb-type blower and remove the lens and blow off the sensor. If the Nikon has a function that allows you to clean the sensor similar to Canon's way, do that. I wouldn't use a can of air because of propellant....I know Canon says to use a bulb blower because you don't need a lot of air to blow them off. If all else fails, send it back to Nikon to have it professionally cleaned.
 
I took the lense off and dusted it a lil with a tissue. Then i took a can of compressed air and blew it off. I held the can back so as not to direct a forcefull stream of air onto the unit. I mainly wanted to blow any dust out. I did this on the mirror, then flipped the mirror up and blew some air at i guess the sensor below the mirror? I didnt test it yet on studio lighting.
 
You must log in or register to reply here.
Back
Top