Cheap T2-M42 adapter and Mosler Photoguard 35/2.8

I bought a cheap T[2]-M42 adapter for the Mosler Photoguard 35/2.8 lens (which now has an adapter for the Pentax K).

But I couldn't get it fully screwed onto the lens. There is a clearance, therefore it is impossible to focus to infinity.

The end of the lens rests on the internal of the adapter.

For comparison, here is the adapter for Pentax K:

But the T[2]-M42 adapter sits on the Five Star 500/8 lens with no problems.

Some adapter modification is required.

See also related notes:

• Kenko Soft 45/4.5: M42 adapter (2025-09-15)
• Mosler Photoguard 35/2.8: T2-M42 adapter modification (2025-05-17)

Image albums:

• Lens accessories
• Mosler Photoguard 35/2.8
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