Carsen 180 f3.5 wrap up for April. I bought this lens from member MightyMike in January of this year for about $50USD. It's hard to find any info about it online as Carsen apparently was a Canadian reseller of Olympus gear. Apparently this lens traces it's history back to Olympus and back to somewhere in the 1970's or '80's. Not sure really. It's big, heavy, long, M42, manual focus, and has a very interesting shape.
Mounted on my K5 with the Pentax M42 adapter, it tends to wiggle a bit. Could not find any problem with that but there is a lot of weight on the adapter. I've read that this is not uncommon for M42 lenses (although I can't remember others I have doing this a noticeably as this one).
What attracted me to it was it's interesting shape (really!) and ten aperture blades, which I suspected might provide pleasant bokeh and interesting starbursts - and as I found out this month, I was right on this.
What I've learned about this lens is that it's a good lens just not a versatile great lens. With a minimum focus distance of about 7 feet, it's hard to get close to something. At f3.5 is on the slow side too. It clearly provides nice bokeh and 10-point starbursts and I like both of those features. I've gotten reasonable night images of the moon and stars as well, although clearly much longer lenses would be much better at this. I didn't spend a great deal of time finding it's sharpest f-stop but around f8 or f11 it seems to be - like many lenses - at its best.
Bottom line here is that this would not be the first lens I reach for but it's staying in my lens kit for sure. Like Takumars old cheap lenses like this have a charm all their own. Yes, there is a little flaring with this lens (no idea of the coatings used on it either), yes it's a bit slow to use, no it's not a telemacro type lens, no it's not long enough for birds etc. but with a metal body that you feel you could use to drive nails in to wood, this puppy is a solid piece of glass. I will say that towards the end of the month, I got tired of the limitations a telephoto places on you day in day out. As I've found before, telephoto lenses can't be used for everything. Anyway, it's been an interesting challenge.
Once again, thanks to all of you who commented on my postings this month.