Chronos > Chronos User Discussion
Chronos 2.1 lenses
hydraulicpresschannel:
There was already some discussion about lenses on other topic but I thought that this subject deserves it's own topic. I have been too busy to think about what lens to get and now the camera just arrived and I don't have anything suitable to film with it :D Only lens that I have is my dad's old russian 500mm mirror lens that would be probably something like 2000 mm with the crop factor taken into account. I think I have to do at least one video with the combination still :D
I think I don't want to just use some Nikon glass with always wide open hack so I have to find totally manually controllable lens and it would be probably good to be at least f 2.8
With regular cameras I use quite often prime lenses since there is enough pixels to zoom in on edit when necessary on 4k image but that's not option here so probably have to find zoom lens and it ain't going to cheap with these specs probably :D If anybody has good recommendations those are welcome.
hydraulicpresschannel:
I found one used lens for sale near. https://kamerastore.com/product/nikon-24-70mm-f2-8-g-ed-n-af-s-nikkor-7/
I think that could be probably pretty good and since it's just f 2.8 no need for any trickery to keep it open. Does anybody know whats the crop factor with Nikon lenses and the mount that comes with the camera?
Nikon1:
Hi Lauri,
The Lens you linked is Still a "G-Style" Nikon lens, you can see that by the "G" in the Lens name. That means you need to control the Apperture with the Adapter or camera and you still have the problem with the Apperture beeing Closed all the time.
Lenses Without the G in the Name from Nikon have dedicated Apperture-Control Rings. This lens has not.
I think what is intended to be used with this adapter and the camera is actually something like those primes Here (Set of Rokinon Manual Prime Lenses in Nikon mount, with apperture Rings):
https://www.ebay.de/itm/Super-lichtstarkes-walimex-pro-Vollformat-Objektiv-Set-fur-Nikon-14-24-35-50-85/174138211715?hash=item288b723d83:g:2KEAAOSwn~Bd9hfW
.
Once i got mine i could make and send you an adapter with wich you could control the Apperture, since you are in Finnland. So shipping wont be a problem for me.
.
Or (you have a 3D-Printer) just print this file in the Attachment and use this adapter, which will let you controll the apperture (This is The Adapter i use, also the one shown in the video with the "Hack"):
https://www.ebay.de/itm/Objektiv-Adapter-fr-Nikon-AI-AIS-G-Lens-to-Olympus-Panasonic-MFT-M4-3-M43-Kamera/254307153863?hash=item3b35e337c7:g:iYcAAOSwTUpdNrH0
Since nobody did give Feedback on the Functionality of the 3D-Model, you maybe need do change the Thickness to get propper Focus on infinity. If you do so, please upload the changed file for everyone else to use, that would be nice!
Also dont do to crazy stuff with this, since it has no lock, it is just clamped in the 3D-Printed Interchangeable Mount.
I can also give you Plans to build an Metal Adapter on your CNC, if you want, contact me via PM.
hydraulicpresschannel:
I sent email to that lens store and asked do they have any parts that could do the job of keeping it open. I have way too much things to do so it would be great to just solve this with out starting to design and manufacture parts :D
But the prime lens set is also pretty good option. Those would be quite fast lenses and the price isn't totally crazy.
Nikon1:
--- Quote from: hydraulicpresschannel on February 05, 2020, 09:54:28 AM ---I sent email to that lens store and asked do they have any parts that could do the job of keeping it open. I have way too much things to do so it would be great to just solve this with out starting to design and manufacture parts :D
But the prime lens set is also pretty good option. Those would be quite fast lenses and the price isn't totally crazy.
--- End quote ---
Yeah, ok, i forgott, that you are also an pretty busy man...
But i also doubt that this lens Store will Have anything usefull for you. if you want THAT lens, with an easy fix for that problem, just get an older version, like the "AF" version (Non-G):
https://www.ebay.de/itm/Sigma-EX-Aspherical-24-70-mm-F-2-8-AF-D-Macro-Objektiv-fur-Nikon/293392214343
This Version of the Lens is quite a bit older and still has an Apperture Ring, so you can control the Apperture with that.
I think, since FullHD is still a rather low resolution to todays 24 and More Megapixel, that the difference in Image Quality shouldnt be that bad... also it can be had for pretty cheap used.
.
For Primes, you could get an old 50mm Nikon Mount Lens with Apperture Ring, they cost very little. Still kinda long focal length, but fast and Cheap!
https://www.ebay.de/itm/Nikon-Nikkor-AF-50-mm-F-1-8-D-AF-Objektiv-neuwertig/164055117540
https://www.ebay.de/itm/Nikon-Lens-Series-E-50-mm-1-1-8-Pancake-Nikon-Analog-Objektiv/143524847929
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