Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
08-29-2012, 09:33 PM   #16
Pentaxian
Just1MoreDave's Avatar

Join Date: Feb 2007
Location: Aurora, CO
Photos: Gallery | Albums
Posts: 4,862
I would get this:

https://www.pentaxforums.com/forums/photographic-equipment-sale/194400-sale-t...a-adapter.html

I had one that looked just like that, got it back into shape to take filters and it was fine. Sold it and the new owner seems to like it too. I have the AF version now. It's very good at macro but also works as a 90mm prime, 9 blades, very well corrected wide open, easy to focus precisely. Look what people will pay for an 85. OK, not exactly the same but with some flexibility, it can do many things better. I like the dual-purpose nature of this lens. Here's a shot with mine, using flash:



08-30-2012, 07:55 AM   #17
Senior Member




Join Date: Jan 2009
Location: Blacksburg, VA
Photos: Albums
Posts: 284
Original Poster
I'm interested in this Cosina 100mm f3.5 macro. Can someone help me find one? Often with these used out of production lenses everyone mentions how easy they are to find cheap, yet I have a hell of a time. I'm not very eBay savvy...

Thanks!

Ken
08-30-2012, 10:02 AM   #18
Senior Member




Join Date: Jul 2012
Location: SW Florida
Posts: 234
I have the m42 version that I could part with but am not a paid member with access to the buy-sell program.Mine has the Phoenix brand but think they are the same.
08-30-2012, 10:56 AM   #19
Veteran Member




Join Date: Nov 2009
Location: Iowa
Photos: Albums
Posts: 2,269
QuoteOriginally posted by grhazelton Quote
Don't forget the Vivitar/Cosina/Phoenix and maybe under the Pentax label 100mm f3.5 macro. It goes to 1:2 continuously then reaches 1:1 via a dedicated plus lens, which is probably an achromat. While I have the manual focus version, there is also, I think, an autofocus edition. Mine has an "A" on the diaphragm ring, so it talks to my K5. Yes, it is a "plastic fantastic" but is sharp, and not expensive. I bought mine new some years ago for about $100. Also makes a nice portrait lens.
I have the Promaster branded MF version. It's a terrific lens. Tack sharp, nice bokeh, and superb color rendering. I paid $60 for mine. The manual focus version is supposedly a little better build quality than the AF version, and for macro, you don't need AF anyway. So I actually prefer the MF version.

08-30-2012, 01:22 PM   #20
Pentaxian
littledrawe's Avatar

Join Date: Jan 2010
Location: Red Rock
Photos: Gallery | Albums
Posts: 2,454
QuoteOriginally posted by Javaslinger Quote
I'm interested in this Cosina 100mm f3.5 macro. Can someone help me find one? Often with these used out of production lenses everyone mentions how easy they are to find cheap, yet I have a hell of a time. I'm not very eBay savvy...
Its best to try different search combinations and maybe not with exactly what the name of the lens is becuase that may not be how the seller listed it.
try:
Pentax macro lens
pentax macro 100mm
pentax macro 100mm f3.5
pentax cosina lens 100mm
pentax promaster macro . . . . . . and so on

You can eliminate options from the search by using the selections on the left of the screen
lenses only
prime lenses
and then narrow it by brands if you want.

look for other places that sell used gear too, a lot of people have a list of sites they check often for deals so sometimes you have to check a lot for a while to find what you want.
08-30-2012, 02:12 PM   #21
Site Supporter
jimr-pdx's Avatar

Join Date: May 2010
Location: 1hr north of PDX
Photos: Gallery | Albums
Posts: 3,550
I have sigma's 50mm f/2.8 and the Promaster AF 100/3.5. The Sigma does 1:1 but you get mighty close - so great for plants but not bugs. Searching for 100mm f/3.5 should bring up the cosina, then just watch for the pentax mount.
08-30-2012, 03:16 PM   #22
Veteran Member
msatlas's Avatar

Join Date: Dec 2009
Location: Madison, WI
Posts: 309
I have an old Vivitar 55mm f/2.8 Macro that goes down to 1:1 magnification. It's a great lens but I just don't do much macro shooting (*cough* resisting urge for shameless plug of the marketplace listing for this very lens *cough*). They had similar 90mm lens which also goes to 1:1 if you'd rather have something that lets you get a little more distance between your subject and the camera. These lenses were both made by Komine and have serial numbers beginning with 28.

There's another Vivitar 90mm f/2.5 macro alternately called the Bokina (for its great bokeh). It was made by Tokina and sold in both Vivitar and Tokina versions. It had a matching adapter to go down to 1:1 magnification. Serial numbers for Tokina-made Vivitar lenses start with 37.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
choice, k-mount, macro, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Lens Choice for New K-5 perfectspot Pentax SLR Lens Discussion 8 02-12-2012 01:51 AM
Lens choice ronyzmbow Pentax SLR Lens Discussion 5 02-09-2012 10:25 PM
Lens choice(s) for K5 A440 Pentax K-5 16 05-03-2011 10:26 AM
Which macro lens would you pick if you only had one choice? ViS Pentax SLR Lens Discussion 27 11-09-2008 08:46 PM
Macro Lens choice squarerigger Pentax SLR Lens Discussion 10 06-01-2007 02:36 AM



All times are GMT -7. The time now is 09:42 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top