new nikon to PL adapter..

[Zakaree Sandberg]

sooo this guy has this on ebay.. I sent him a message asking about it.. because i know all about these adapter being macro only basically (no infinity focus)

hes claiming this one has glass of some sort so that you can indeed focus to infinity... thoughts?

[Matthew Rogers]

Uhhh, my understanding is that because the back of the lens is not the right distance from the sensors, that's why you can't focus to infinity. So unless it's a super duper piece of glass that optically, somehow, changes that, I doubt it works.

It would be wonderful though if you could switch lens formats that quick. It seems like I read on here yesterday the idea of having the sensor move back and forth for backfocus. That would solve this problem as you could just put the adapter on and then move sensor forward to keep the correct distance. Even better would be to have a very small motor so you could change the back focus via a setting on the camera.

Matthew

[Kip Kubin]

It might be worth checking out if he has a good return policy,

It was my understanding that a Nikon to PL adapter is mathematically impossible.

Nikon to Aaton will work. but not Nikon to PL

[Zakaree Sandberg]

yeah but then your dealing with moving part inside of the camera which is not something we want to fail... so the best solution is a IMS type mount

[Nick Gardner]

This has been mentioned before. The optics magnify the image and steal light. And they are not the sharpest optics in the world for the money the guy is charging.

Nick

[Matthew Duclos]

I don't think it's a solution. You can take the best Nikon glass available but the cheap glass in the adaptor will ruin it.

[Stephen Williams]

Possibly a 1.4 teleconverter

[chuck colburn]

There is such a thing as a 1-1 relay lens which does not alter focale length but it is a complicated device and not a simple teleextender. It would not fit in a device like what is shown here.

[Tony Lorentzen]

Might work fine ... but I've looked into making this kind of adapter (with a lens technician who's made optics for satellites etc.) and it's basically not possible to make this kind of lens without prolonging backfocus, hence extending the lens. We looked into a range of solutions and the worst case was an extension of the lens of factor 1.4. In order to eliminate (the worst) aberration when shooting wide lenses we found out we'd have to make a custom lens element consisting to separate elements cemented together. Each adapter would have ended up costing more than 2000 USD to be profitable, which is why we decided to drop the idea.

But I'd be very interested in seeing some grabs with this thing if someone has bought it already?

[Douglas Underdahl]

You can make one out of the Nikon 1.4x unit. I did once, and that was enough for me. Century Precision used to make them but I think they are discontinued. They were really in demand with Arri and Aaton cameras that were difficult to install Nikon mounts on due to the mirror shutter, which isn't a problem on RED. Just install the Nikon mount on the RED and no magnification factor, no extra element, no light loss. Of course you have to change those 8 screws, but I've got the PL to Nikon (or back) swap down to about two minutes, even in the field. I think there will be a faster solution one day.

[Tony Lorentzen]

Same here. I can swap the mounts in about 3 minutes being very careful not to damage the filter.

[Larry Gebhardt]

I've been watching this item on Ebay also...mostly out of curiosity. Since he uses the term "glass" (instead of saying that it is a tele-extender), it is probably just a negative lens element ...a single non-corrected negative focus piece of glass that most certainly will deteriorate the image...but to what extent, who knows. The better Tele-extenders have 4 to 7 elements, all designed in concert (in theory) with the lens to make the image as good as possible...knowing that you are essentially magnifying the image on the sensor...and all the aberrations that are part of it.

Century did make an adapter using a 1.4 extender (I think it was a Canon) and I have myself built one using a high quality Nikon 1.4 extender, that works quite well, but I can only use it with the longer Nikon lenses as I chose the higher quality extender that has bigger elements, spaced further apart (rather than a cheaper, smaller extender...I use it only for long lenses anyways).

The only way you can have a Nikon lens (able to focus to infinity) on a PL mount camera is by using an adapter with an extender.

Larry

[ogauchan]

Not worth, Don't buy. I have one which i bought from ebay. I asked him for refund, i got the money refund but not shipping.