This lens is in excellent condition, the glass is nearly perfect, there is some light dust inside, nothing more than you'd expect with a lens of this vintage and certainly nothing which would affect your final image appreciably. The lens barrel has some normal light wear, bit of brassing on the edges but no major damage or heavy use.
The focus is smooth and accurate and the aperture blades are clean and snap nicely.
Dust in lenses does not show up as dust spots on pictures. What it does is reduce contrast and sharpness and increase flare, but it takes quite a lot of it to do this.
Dust in lenses does not show up as dust spots on pictures. What it does is reduce contrast and sharpness and increase flare, but it takes quite a lot of it to do this.
This is true. It's so far out of focus it doesn't show up as you might expect, and it actually takes an amazingly large amount to make a noticeable degradation.
I suppose I could add that when I say light dust I mean light specks of dust. Not a blanket of dust. I have yet to find a used lens which didn't have some amount of dust inside, just figure I may as well mention it no matter how insignificant.