marius kildalsen

No problem, well since you have the original ring you can put it next to the one mounted on the camera and you will see they are not exactly the same. I'm not looking at your camera, but I know those adapters were poorly machined.

 

Is not a good idea to change the mount now, the gate was widened and the center of the new frame (S16) is not the same as the previous one (R16) if you change the lens you would get a weird effect when you zoom in and out, maybe not on the viewfinder if it was not widened but on the film for sure. The other factor is even if you use still photography lenses designed to cover a much bigger area you would be using the side of the lens. Most lenses have the best optics in the center, and the last factor is going back to the original mount would not fix the problem because it was touched. If you want to have perfect collimation you don't mess with mounts, as soon as the original mount was removed the colimation was lost. Now collimating a mount is not impossible, is just a matter of having the right distance (45.46 mm) between the mount and the film plane, but when you don't have the tools and the experience it can be complicated. When I converted my camera I got it close to proper focal flange distance using sand paper to reduce the size of the adapter, but it can be challenging.

 

I would suggest getting some M42 lenses, they are inexpensive and have good quality with the benefit that they cover the S16 area without a problem so you would not get vignette. Personally I don't like using zoom when I'm filming so that was not exactly a problem for me.

Thanks. Ok then I wont do that. Yes I already own some m42 lenses that i have used for stills. Maybe I should just comit to those witout worrying. I am not a big fan of zoom in the middle of a shot myself, but I would prefer not bringing so many lenses around. Especialy since this is more a hobby camera for personel projects. I do have a 50,85 and looking for 35. Any suggestions for an even wider lens?

Thanks Ruben. Yes I did buy the camera already converted. I do also have the original ring it was converted from. Do you think the lens will work normally if I change back? Thanks for the diopter tips! I will try it and shoot a few new test rolls.

Luigi. Yes the viewfinder was set to my eye. I Did test it today with a similar lens. I Also did put my lens on the other camera and I could not find anything wrong with it.

However I did tighten the pressure plate towards the gate and the film locks in a bit more.

Could it be that there is nothing wrong with the lens, only that the film was a little bit loose? Could this shake it out of focus?

Thanks

How did you adjust the pressure plate? The screw that keeps the spring in place?

The backfocus I can work around using other lenses, but it would be great to have a zoom in working conditions.

Hi.

I do have multiple problems with my k3 camera.

First it looks like the backfocus on the standard 17-69 zoom lens is a bit off. Its hard to see this in the viewfinder but I can clearly see it in the scanned film. Does anyone know how to adjust the backfocus on these lenses? I dont think any of the local camerahouses can do it on this mount. You could see it in the first 30 seconds of this clip.

Its a bit hard to see this in the viewfinder thats why I did not see it during takes.

And I also had some problems with the test roll. I did use mutiple frame rates, 8-24-32-48 when shooting this and scanned it at 24. From aprox 00:30 the probem with the film appears. Does anyone know what this could be? Or could this just be the film not alligned correctly because I jurked around with the frame rate?

https://vimeo.com/306043963

Thanks