So what can this image tell me about my camera... (Large Photo)

[egdinger]

So I bought that Korona that Richard was selling in the classifieds about a month ago, and FINALY got around to making my first exposure with it. And I'm wondering what this image can tell me about it. And how exactly does a pinholed bellows affect the image?

Dead Link Removed

Tech Specs.
8 1/2 inch wollensak velostigmat found on floor
Ilford multigrade 4
60 seconds at f8
chems unknown

 

[Dave Parker]

I don't see any effects of a pinhole or pinholes in the bellows, normally it takes quite a large hole in the bellows to really affect the exposure. Other than that, what are you expecting this picture to tell you about the camera, I would be more inclined to ask about the lens you were using.

Dave

 

[Dave Parker]

Chems Unknown?

You don't know what chems in developed in, or you had someone else do the developing...

Exactly what type of information are you trying to figure out?

If pinholes were affecting the image, I would expect to see some type of streaking on the image, which I am not..

Dave

 

[rrankin]

Well, since I used that camera with that bellows outside in direct sunlight to make an entire series of images for several months, I kind of doubt you're going to find any pinholes in it. Larger holes often put a second layer of image in the scene. The easiest way to check for pinholes is with a flashlight inside the bellows in a darkened room. In an indoor scene like this, I doubt you'd see pinholes anyway becasue of the light levels, but I suppose you could with such a long exposure.

As Dave asked, what are you looking for? To me the image looks flat and lacks shadow detail, which could be from the lens (or from my crappy laptop monitor....) Are you shooting onto paper? If so, you might need to filter the incoming light with a filter similar to what you'd use on your enlarger.

Also, it appears that you didn't have the back completely levelled as there seems to be some line convergence.

Cheers, Richard

 

[egdinger]

I was mainly looking for light leaks in the film holder or where the back meets the camera, or bellows, or my custom (cough) lensboard. I thought I saw a large fogged area but I'm not so sure anymore, just wanted a second opnion.

And I devolped it at the local college, and the chems are just there pre-mixed. I think the reason it is lacking so much shadow detail is my exposure, I didn't know what to rate the paper at, and I think I underexposed it.

Stainsnow, the lens I was using was an 8 1/2 inch wollensak velostigmat that I found neglected, doing duty as an enlarging lens, that appears to have water spots in it.

I guess the image doesn't tell much then does it? Sorry for waisting your time.

 

[Dave Parker]

No Waste of time, I was just confused at what you were asking about, like I said, I don't see a lot to indicate pinhole problems, and somehow when I posted the first answer, I had not seen the information posted below the picture..

Dave

 

[philldresser]

Stainsnow, the lens I was using was .....

Stainsnow?
Now Dave! What have you been doing outside in the snow?
Phill

 

[jimgalli]

I don't see any glaring problems in the image. It tells me that with some practice you'll be making some fine images with that old camera. The Velostigmat will serve you very well indeed. You're lucky to have it. At f4.5 it can make excellent portraits and at f32-64 it will be nice and sharp.

 

[Dave Parker]

Stainsnow?
Now Dave! What have you been doing outside in the snow?
Phill

Phil..

We have two large dogs, but I still can't figure out how HE knew that!!!!

LOL

Dave

 

[egdinger]

Dave, not quite sure how I know that either. Well at least it's good to know that the problem lies with me! Jim good to know about the velostigmat. Thanks everyone.

 

[rrankin]

I would think that the easiest way to check for a back leak would be to sacrifice a piece of film. Put the holder in, leave shutter closed. Remove the dark slide, then wait for x amount of time and process the film. Should have no image on there. If any of the film is exposed, you have a leak, and it would be easy to idntify its location.

On the older cameras (like that one), you need to check the screws regularly to make sure everything is tight around the back. And, if taking a very important image, and I had a worry, I'd run tape down the sides of the joint. I always carry masking and gaffers tape with me.

Cheers,
Richard