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Lens or camera problem?? HELP!!

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Dan Abraham

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Hi guys,

Here's the deal, bought a Tokina 11-16 Lens, threw it on my nikkon mount and the image is EXTREMELY dark, the Raw image is basically black!! :cursing: and the RC3 image begins to show some detail though it is still incredibly dark and distorted. When I take off the Lens the Raw image turns into a whitish or bright black color and the RC3 image gives a completely white color so I'm assuming the sensor is fine? I can provide images if necessary, I have played with all the settings, I have calibrated the camera (black shading), restored factory settings, adjusted brightness, white balance etc... The only thing that even brought out an image was increasing the exposure. Is this a lens problem? if so what could be wrong with the lens? Or is this my camera? this is a RED ONE by the way... Thank you in advance for all your help, you guys are my last hope before I start smoking myself to death haha *gulp* this is so depressing :frown:
 
are the aperture-blades of the lens moving just fine/right?
if you don't have any problem with other lenses (on the same mount) it's most likely the lens...

which mount do you use -> orig. RED or 3rd party with aperture-ring?
 
i guess first step would be to isolate the problem....try the lens on another camera, try another lens on the red...does the lens stop down properly? maybe it is/gets stuck on f22/32? could be the mount as well...
 
The aperture blades are moving fine... I tried the same brand of Lens on this camera a month or so back, however that was in another state, the camera has been on a plane since then and this is the first lens to be placed on it since, the mount is a nikkon mount, not the original Red one...
 
I'm sorry I'm a beginner at this, what could be wrong with the mount?
 
Hello Dan,

Do you have another lens to try? Before worrying too much about the camera, grab a different lens and put that lens on the R1 Body. My guess is that this will relieve your concern about it being the camera.

Then we'll have to figure out if its the mount or the lens but lets rule out one thing at a time.
 
Also the aperture on the lens is F 2.8, I guess trying another lens on the camera is the best way to go just to isolate the problem, I'll rent out a lens in the next few days and let you guys know what happens
 
Dan Abraham said:
the mount is a nikkon mount, not the original Red one...
Click to expand...
which one exactly? ProLock or 3rd party "dumb" mount? Your specs are still a bit vague for me to dig deeper into this (sorry)… The hints here are all good - e.g. if the lens works just fine on a nikon stills camera it can't be the lens (and you say the aperture blades are moving just fine - so I'd also say it's either a mount- or camera problem).
 
Hey Louis,

That's been my biggest problem, I only have one lens, first lens I've ever personally bought, I've had another lens placed on the camera before, this was a month or so ago and it worked fine, the camera has not been used since apart from assembly and I played with the back focus clamps, I doubt it's the camera, however the lens just came out of the box, brand new, finding it hard to fathom that my first ever lens is faulty so it's making me doubt the camera *sigh* I shall try to rent out a lens in the next few days just to be absolutely sure... However, I'm confused as to how the mount could be causing this problem, I am still a beginner so am unsure as to how the mount could cause this?
 
Just look into the lens when it's mounted on the camera.
Is the iris open or closed? You'll see the diaphragm forming a small pinhole sized round opening way inside the lens (if closed)
If open you don't see the diaphragm at all- it's out of the way..
 
Sorry this is where I'm unsure, the mount is definitely not a prolock, so I would go with 3rd party... Also a dumb mistake on my part, the aperture blades seemed to be moving fine until I realised that I was just moving the zoom *facepalm* so sorry about that, I don't think I have aperture control on the actual lens, however the aperture is F2.8, so I'm assuming that's quite a large aperture??
 
just visit a camera store with your lens, ask if you can test one of their cameras with your lens.. take some shots with it in full auto..
bright and dark..... even better, visit a camera store with your R1.. try a few manual iris nikons as well as auto..
Can you post a picture of your mount? If it has no means of controlling the iris of a G series nikon, it is going to be very difficult to use with the tokina.
If it is the original R1 nikon mount, that's not a good choice for that lens..
Better mounts have a screw or ring to adjust the iris on ringless lenses.. take a look at Jacek's website for use instructions on using his mount..
 
That mount will not open the iris on the Tokina.
It's the original R1 mount. The original R1 mount was made to work with manual iris lenses only...
 
Nikon G lenses and that Tokina would default to completely closed aperture. If that is a dumb mount then you will have an all dark view. You could shove a end of a match stick in the lens where the aperture lever is to physically prop the aperture open. I've done that before on a Nikon 10-24G lens to at least get it to work on a dumb nikon mount.
 
The problem with this theory is that I have used this exact brand of lens before on this exact mount... Though now that you mention it, I'm starting to doubt my own memory, I will look into it further by renting out a manual iris lens, thank you so much for your help, I'll let you know what happens =)
 
jup - this is def. the original mount (or a similar one) - you need a lens with manual iris control (of course you can use automatic lenses but they have to be "wide open" before mounting them - so it's always a good idea to have some still camera laying around [old DSLR is totally fine] to check and do those operations)…

if you can't get your hands on another manual lens just ask around for DSLR's with the fitting mount - many people are using DSLR nowadays so it should be no problem to get your hands on some unit just to check your lens and aperture control…
 
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