Normal vignetting?

flyingchange · Aug 16, 2023

Usually when people talk about vignetting I don't even see what they're talking about. This seems kind of dramatic though. Is this a normal/expected/acceptable level of vignetting? This is a Nikon AF-S DX NIKKOR 35mm F/1.8G that I bought new in January. These shots are from an F80 but this has also happened with my F100. It's all on shots where the camera is focused on something in the distance - shots in low light are fine, and shots in bright light focused on something close are fine. Anyone know what is going on here? Appreciate any advice.

MattKing · Aug 16, 2023

Welcome to Photrio.
Usually I leave Nikon questions to the Nikon knowledgeable.
But isn't a DX Nikkor designed for a cropped sensor (or APS film) sensor?
Don't you need a FX Nikkor for a 135 film body?

AnselMortensen · Aug 16, 2023

^^^^This.^^^^^
What's happening here is that by using a DX lens on an FX-size sensor or 35mm film camera, you are effectively reducing the focal length by a factor of 1.4
In this case, it is converting your lens to a 25mm lens that doesn't cover the larger format.
Conversely, using an FX or "35mm camera" lens on a DX camera, the effective focal length is increased by a factor of 1.4
Hope this helps!

flyingchange · Aug 16, 2023

Oh my gosh, thank you!! I was going by the lens compatibility chart on Ken Rockwell's site which says that AF-S and G lenses work on these cameras. Didn't think about the FX/DX thing at all. So the Nikon 35mm f/1.8 FX is the one I want? Gosh I feel like a dope, thank you again.

Derek Lofgreen · Aug 17, 2023

No need to feel like dope... we are all learning here.

D.

MattKing · Aug 17, 2023

AnselMortensen said:
^^^^This.^^^^^
What's happening here is that by using a DX lens on an FX-size sensor or 35mm film camera, you are effectively reducing the focal length by a factor of 1.4
In this case, it is converting your lens to a 25mm lens that doesn't cover the larger format.
Conversely, using an FX or "35mm camera" lens on a DX camera, the effective focal length is increased by a factor of 1.4
Hope this helps!

Not quite.
A 35mm lens is a 35mm lens, whether it covers the frame or not.
If you happen to use a film frame or sensor that is smaller than the format that the lens is designed for, then yes, you end up with a field of view that is smaller than what is available from the lens, so the effect is similar to using a longer lens.
But it doesn't really work the other way - at least not in a practical way - because of the vignetting.

MattKing · Aug 17, 2023

And don't feel bad - the FX/DX dichotomy is a bit hard to track - particularly if you aren't a Nikon film and digital user.

flyingchange · Aug 17, 2023

MattKing said:
And don't feel bad - the FX/DX dichotomy is a bit hard to track - particularly if you aren't a Nikon film and digital user.

Yeah I don't even own a Nikon digital camera.... maybe this will be my excuse to get one now.

MattKing · Aug 17, 2023

The Canon approach is simpler - they won't even let you attach an EF-S lens on to a full frame EF or film body.
Although I do have a fun little 22-55mm zoom in EF mount that was designed for the APS film bodies, but covers full frame and film quite nicely.

Don_ih · Aug 17, 2023

You should use it. Then you can cut the corners off the prints like they did on Battlestar Galactica

Sirius Glass · Aug 17, 2023

flyingchange said:
Usually when people talk about vignetting I don't even see what they're talking about. This seems kind of dramatic though. Is this a normal/expected/acceptable level of vignetting? This is a Nikon AF-S DX NIKKOR 35mm F/1.8G that I bought new in January. These shots are from an F80 but this has also happened with my F100. It's all on shots where the camera is focused on something in the distance - shots in low light are fine, and shots in bright light focused on something close are fine. Anyone know what is going on here? Appreciate any advice.

Welcome to ~~APUG~~ Photrio!!

rcphoto · Aug 17, 2023

I used the 35 1.8 dx on my F5 quite a bit. Really only noticed the vignette stopped down below f8. Wide open never had much issue.

Trail Images · Aug 17, 2023

Although it is fairly dark you might be able to recover some of it in PS with Lens Correction.
Filter > Lens Correction > Custom > Vignetting > Lighten

Normal vignetting?

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