sigma sd9 and problems with improperly exposed pictres.

[chris_fall]

hi everyone,

 

i've got a sigma sd9 a friend of mine let me have (he honestly hates

it and i havn't moved to digital so i'm testing it out) and he told

me how there are some color shift problems and flash compensation

problems. When i use it for nature or outdoors for architecture it

produce awesome pictures with right on color. but when i try and use

it indoors with the flash (a ttl flash, the sigma ef-500 dg st sa) i

always have to compensate fot it by over exposing by 1.5 stops. and

if i use it with studio lights it does the same thing with different

exposure compensation. and then skin tonew are horrible. they come

out so far from the real skin tone it's almost comical and then

someone who has light blond hair might come out with gold hair.

(thats nder sunlight conditions too) anyone know whats going on

here? or should i just sell the camera and get a d70 when they come

out?

 

thanks in advance

fall

[mike_morgan1]

Maybe you could rent it and a lens so us canon types can see about the Sigma technology that is supposedly better than Bayer.

[chris_fall]

i have it here. i've just got to post a picture. so i've gotta find one, lol<div></div>

[chris_fall]

ugly skin tones<div></div>

[Jerry_]

Just about any 'flash' system is designed for fill-flash out-of-doors in the sunshine. Studio strobes, after initial testing, may require the user (i.e., photographer) to use a filter for getting the 'correct' color you expect to capture on film. I'd guess the same applies for digital work: indoors, the + compensation is pretty much normal since the walls tend to block the sunlight. For your strobes images, you may have to get a couple of different Tiffen cc filters and experiment. If you are really serious, you can get a color meter and that will help you get to the 'correct' color quicker, but the price is higher.

 

 

 

The camera is capable, but it does not have a one-hour lab tech to correct the color at the time of processing. The camera operator has to become capable.

[david_f._stein]

There are many factors. 1. You are asking the any flash to do a lot in such a dim

environment. BUT 2. You must start with what I expect are pretty sophisticated color

balance options for that camera. What color balance is set. See if there is one for

SPPEDLIGHT as opposed to AUTO or INDOORS/INCANDESCENT. Next, it should have a

CUSTOM color balance feature (every camera calls it a bit different.), where you make

a CALIBRATION, i.e. firing the flash at a large what you want to be white and neutral

surface. I've seen a number of images from that camera on the web, and I think it

competes with the Nikon, Canon and Fuji DSLRs. I give Sigma credit for designing

cameras of its own-even if some would say it's to lock users into Sigma lenses. All

major manufacturers would like users to stay with their own brand lenses. Good