Six elements in four groups. Minimum focusing distance 0.6 m. Attachment is ø52 mm threaded.
This lens was first sold in June 1979.
This page provides disassembly instructions for the front element portion of the Canon New FD 50mm F/1.8.
Please see the end of this page for notes on assembly as well as disassembly of the front element.
Disassembly of front element section
The nameplate is fitted so it will not come off even if it is rotated.
After weakening the adhesive, use a spatula or similar tool that will not scratch the lens, and remove the lens as if you were flipping it off.
First, pour a very small amount of alcohol around the nameplate.
Insert a spatula into the border between the lens and the nameplate and lift the nameplate straight up.
Rotate the spatula halfway around the lens to avoid scratching the lens surface, and the adhesive will peel off and the nameplate will be removed.
Remove the three screws under the nameplate.
Pull the filter frame straight up.
You can pull it out by hanging it directly above you with a lens sucker.
Insert a spatula between the plastic holder at the rear of the front element and the lens and remove it.
Use the lens sucker to pull out the lens.
The second front element of the Canon New FD 50mm F/1.8 is processed and cannot be removed.
*This is the biggest difference from Canon New FD 50mm F/1.4.
The above is the disassembly procedure for the front element section.
Lens cleaning and assembly precautions
Next to the disassembly procedure introduction, we will show you what to pay attention to when cleaning and assembling the unit.
Both are important, so please check.
Precautions for lens cleaning
Canon lenses, if the cleaning finish is not good enough.
Haze appears as if oil has adhered to the surface.
It’s a thin haze, so you don’t notice it when you look through one lens.
We often notice this only after assembling the product.
＊After having cleaned it, it was disassembled again due to oil adhesion!To prevent this from happening, please check by holding it up to the light before attaching the caps.
Notes on assembly
The forter frame aligns the notch with the orange indicator of the aperture.
Insert the nameplate so that the “EN” of the CANON LENS FD 50mm F/1.8 LENS is aligned with the mount removal switch.
This is the end of the disassembly procedure for the Canon New FD 50mm F/1.8.
