I have what I think is a very nice copy of this lens. I went on a LBA binge a while back and this was one of the gems. I scooped it up on eBay for $30 (along with a P5 camera that I subsequently sold for $20). It has quickly become my favorite walk-around lens and couples nicely with the A70-210/f4 zoom. I could use a little more reach (A35-105?), but overall I'm pretty happy with it.
My question is about the max aperture. Every source I've seen lists this lens as 35-70mm/f3.5-4.5, which led me to believe the max aperture would be f3.5 @ 35mm and f4.5 @ 45mm. It turns out that this lens is a
constant f3.5 at all apertures. Is that right or is there something screwy here?
I just took some shots with it here in my office. EXIF data should be intact (I can't tell at work). All pics were taken at wide open at f3.5 (at least that's what the camera is showing. No PP, jpegs straight from the camera.
Here is a resized macro shot at 70mm (taken at 7" to the front of the lens):
100% crop of above shot:
50mm
35mm