|Posted: Sat Aug 31, 2019 2:10 pm Post subject: Re: Enna Tele-Zoom 4/85-250 m42 problem with zoom...
I bought recently big lens from Enna. It seems partially work:
- focus ring works - lenses at the back are moving forward and backward
- aperture works - closes and opens very smooth
- zooming ring - moves back and forward
- I can focus at an object and it is sharp
But there is one problem
the lens doesn't zoom - independent form zoom level: 85 or 250 an object has always the same size in EVF... only difference is that that the picture is more or less sharp.
I tried to disassemble it but it is not so easy... Is it possible that something is missing inside? From outside without connecting camera the lens works perfectly...
I will be very appreciated for any help.
I strongly suspect the Enna 4/85-250mm to be a classical four group zoom, which consists of focusing group, zoom group, compensator, and master lens. Usually during zooming both the zoom groop as well as the compensator group are moving. It seems in your sample only the compensator is moving. Maybe a few screws keeping the zoom group "on track" have loosened?