[GabrielFFontes]

Hey guys
I've found here on our brazilian site from the same company as eBay a M-1.7 + Mirage k2000 (?)(ive searched and i guess its a k1000 imitation) for 90 dollars, and a Pentax M-1.4 for 85/90 dollars... Both shipped..
Its basically the same price i'll find shipped on ebay, so...
Do you guys think its worth buying the 1.4?
I guess its sightly on better condition than the 1.7, but just a bit i guess...
They're both without fungus or scratches ....
Thanks

[RioRico]

Some here will argue that the 1.7 is sharper wide-open, and it is.
Some will argue that the 1.4 is better at grabbing light, and it is.

Most will agree that they are similarly sharp from f/2 onwards.
Some will argue that one or the other has better bokeh. Maybe.

My preference: The 1.4, because it can just do more than the 1.7.
That Mirage body has little value, so the 1.4 is a better buy also.

[GabrielFFontes]

Thats what i thought.
I agree with you as you're the lens encyclopedia Just kidding
But i guess its not a too bad price for the 1.4...
I'll buy it tomorrow i guess, just waiting for the seller to answer my question about final price ...
EDITING :

This is a pic of the actual lens...i guess it doesnt look bad

[dms]

The difference (that you would likely/possibly see) are not sharpness, etc. but rather:
-- f1.4 wide open is 1/2 stop faster,
versus
-- f/1.7 lens is better for macro. (with a tele-extender, extension tube, etc.)
Except for these two areas I would think of them as equivalent.
Think of the lens and what future projects are more likely. Do you want to keep buying lenses each time your interest broadens?
Is it more likely you will be doing macro or is low light application more likely?
By the way the front of the lens looks messed up--will it accept filters/hood?

[hcarvalhoalves]

Hi Gabriel.

I have a Pentax-M 1.4 for sale, in excellent condition. It's in much better shape than the photo you posted, no scratches/dents in the barrel. I'm selling as I have enough 50mm lenses already. I can ship to you in Rio for free. Contact me if you are interested.

[Just1MoreDave]

The dents in the filter ring mean that the lens has made hard contact with something. It looks like this has happened a lot. There's a hole drilled in the trim ring between "JAPAN" and "SMC". They did that and probably another hole 180 degrees opposite to remove the trim ring and service the lens. That's normally done by an impatient novice. When the filter threads get dented, though, the trim ring becomes tough to unscrew and it might have been the best way to remove it. For some reason they did not bother to fill the holes very well. The lens looks kind of dirty but a lot of that would clean up. I'd pass unless it was say $40; it's not the only lens in the world and it might have problems.

[sergysergy]

I think I wouldn't pay that much for a lens in that shape