Now you know one of the reasons why I have a M42 and a K mount Vivitar
Series 1 70-210 3.5 zooms.
Anand DHUPKAR wrote:
>
> I beg to differ. I bought my first zoom vivitar one around 20 years back.
> It was a fixed aperture one. Now here in US I bought my new camera systems
> and all I am getting are variable aperature ones. In fact, I was initially
> surprised to note that aperature varies depending on focal length while
> zooming and had to do a little work to understand why it was.
>
> I really miss that constant one.
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