Nikon - Canon adapter help

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lawrenceots

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Lawrence
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A few weeks ago I bought one of those Nikon lens to Canon EOS off ebay for about £16. There is no cheap glass in the adapter, simply electronic contacts that enable it to mount an EOS. However, all the shots I take with it look slightly out of focus, despite hearing the AF confirm beep when shooting. I have shot using the self timer to test, just to ensure it is not shake, and again, they're all blurry. Does anyone know why? I get much better results using my fairly cheap 100-300 USM, yet that Nikon 600 I used is 10 times better iq.What I can't understand is, why are they softer? Theres no glass between the body and lens.:thinking::shake:
 
Are you sure the camera can communicate with the lens? I thought that the contacts on the adaptors were purely to fool the body into allowing the focus confirm light/beep to work. If there's no communication, maybe the lens is staying wide open? Have you tried relying on your eyes to make sure the image is in focus rather than the beep? Maybe Live View?
 
Yes it seems to communicate ok. At least, the image looks sharp when I have focused and hear the beep, and because its the old AIS, I alter the aperture manually. The auto exposures are fine when in centre weighted/spot, just the sharpness seems the problem. When used toI use my D50, they were always pin sharp from focusing, any blur was camera shake. Noone I know has a LV Canon, so can't try that unfortunately!
 
Hmm. Do they look like this?

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DSC_8238.jpg




... which is an M42 35mm f/2.8 on a D70 through an adapter. The Nikon adapter in this case *does* have the built-in lens but the problem here is caused by aperture, which I discovered by using the M42 f/1.4 50mm on the same camera. The adapter stops down the lens, but in the wrong place in the optical chain, so fluffs everything up. Fix is to stop down a bit and try again.

Arthur
 
Mounting is fine, all looks great, you just need to stop down a little is all... trust me - I think part of is there are holes where normally for the given lens fitment there shouldn't be holes (like the adapters are there when in normal use they wouldn't be).

Arthur
 
Will give that a go, tks Arthur. :)
 
Let's see some example shots. If that's a 600mm lens you're using, one always has to consider whether technique could be a factor.
 
I will upload some Raws in a sec..
 
Right here we are. In the interim, I happened to alter the exp comp right down to -2. There was an immediate improvement in exposure(those I thought were fine, not now!) and sharpness appeared better. Note, I did not alter the aperture and the sharpness improved. I remember now, this is the same as the Pentax K100D: I attached an old lens, and the results were rubbish, I dialed in maximum exp comp and results were improved vastly. So, they're already MUCH better. Here are some I just took with exp down to -2, centre weighted, F8 and auto shutterepeed. Tripod and self timer were used for minimum shake. Shot Raw and just converted to jpeg, with no alterations, the low ISO and hi ISO were cropped a lot. Looking at them now, having used the exp compensation, I'm quite happy with them, and think I may have sorted it. Do you think this sharpness is good or...?


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