Need help restoring projector lens.

Prince Harbinger · 08-02-2021, 07:11 AM

Hello, everyone. I recently picked up a Elgreet 51mm F/3.5 cine-tel E lens. I was able to remove the front element and clean it. However, the rear doesn't seem accessible. I tried opening the one screw that the lens has and that did nothing but mess up the aperture blades. When I screwed it back in to the only visable hole I see the aperture blades no longer close. They remain open. I'm quite puzzled with this little lens. I've attached some photos.

Attached Images

View Picture EXIF

View Picture EXIF

**Bob 256** · 08-02-2021, 10:27 AM - **1 Like**

Not sure about opening the rear element, but for the iris, I would try loosening the screw and rotating the iris collar to see if it is disengaged from the iris mechanism. If so, then align the scale to the lowest f-number (appears to be f 3.5) since the iris is fully open, and then tighten the set screw. See if that brings back the ability to adjust the iris.

There might be someone else on this forum who can help you access the rear element. It may be a hidden screw or just a threaded section if you know where to apply some torque. Otherwise, I would clean the external surface and unless there is a lot of internal dirt, let it go at that.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Restoring the cheapest built optical device I've ever seen!	ismaelg	Canon, Nikon, Sony, and Other Camera Brands	4	01-17-2021 06:43 PM
Yet another adventure: Restoring a K2	ismaelg	Film SLRs and Compact Film Cameras	36	12-13-2020 01:58 PM
Abstract Restoring Balance To The Force	Kerrowdown	Post Your Photos!	4	06-04-2020 06:52 AM
Restoring K1000... #5	ismaelg	Film SLRs and Compact Film Cameras	7	12-20-2019 10:35 AM
Need tips adjusting WB for projector screenshots and overall picture takin technique	shaolin95	Photographic Technique	7	12-17-2008 08:17 AM

08-02-2021, 10:27 AM - 1 Like	#2
Bob 256 Site Supporter Join Date: Jun 2008 Location: Idaho Photos: Gallery Posts: 2,375	Not sure about opening the rear element, but for the iris, I would try loosening the screw and rotating the iris collar to see if it is disengaged from the iris mechanism. If so, then align the scale to the lowest f-number (appears to be f 3.5) since the iris is fully open, and then tighten the set screw. See if that brings back the ability to adjust the iris. There might be someone else on this forum who can help you access the rear element. It may be a hidden screw or just a threaded section if you know where to apply some torque. Otherwise, I would clean the external surface and unless there is a lot of internal dirt, let it go at that.

Thread Tools	Search this Thread
	Search this Thread: Advanced Search