rfaspen
[insert pithy phrase here]
What year is your I-61 L/D from, do you know?
I have a I-61 L/D that came with a late 60's FED 3.
The build quality isn't as good as my J-8 from 1956, but it isn't necessarily bad. The focus is smooth from end to end, aperture click stops nicely.
My I-61LD is from 1985 (assuming the first two digits of serial are the year). Its sloppy and cheap feeling in ways none of my other FSU lenses feel. Aperture clicks are fine though.
I suspect its a matter of both sample variation, and era. The ealier I-61s and I-26s look like better built lenses (e.g., from the 1960s) and my other FSU lenses from 50s and 60s (even 70s) are definitely better built than my I-61LD, much better. I often hear that more shortcuts and production trims happened in later years. There might be some truth to that.