Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-21-2010, 10:47 PM   #1
Senior Member
dmfw's Avatar

Join Date: Dec 2009
Location: Dallas, Tx
Photos: Albums
Posts: 159
Macro for Pentax 55-300 Lens

The Pentax 55-300 Lens, while nice, does not support close focus/macro.

Has anyone successfully used macro filters or tubes to force a closer focus for this lens? If so, which option works better?

Or, is this a bad idea?

THanks

12-21-2010, 11:02 PM   #2
Inactive Account




Join Date: Dec 2008
Location: Ames, Iowa, USA
Photos: Albums
Posts: 2,965
The $50 Raynox DCR 150 clip-on closeup lens is excellent for macros with the 55-300mm Pentax zoom. Magnification ranges up to about 2x and working distance is about 8.3" (208mm). All the camera's automatic features work including flash. Amazon.com: Raynox DCR 150 - Converter: Camera & Photo

The Raynox is lightweight, easy to carry, and quick to mount for use. See this thread for examples of what to expect with the Raynox:
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/74221-raynox-macro-club.html

There are no extension tube or bellows devices I know of that will work well with that lens because the lens lacks manual aperture control.

I have some good dedicated macro lenses but use a Raynox 150 on a DA 55-300 most often (You want the Raynox 150, not the 250 for use with the 55-300mm lens - the 250 is too strong & its working distance is too short for most purposes.)

Dave

Last edited by newarts; 12-22-2010 at 07:12 AM.
12-22-2010, 12:11 AM   #3
Site Supporter
Douglas_of_Sweden's Avatar

Join Date: Apr 2008
Location: Stockholm
Photos: Gallery
Posts: 3,347
These aren't the best macro shots I ever shot, but they are just for illustration.
One is with the DA55-300 with a Hoya +2 diopter lens and the other with the DFA100 macro. Guess which...





Take into account that I didn't manage to set the focus on exactly the same point.

Of course in real crusial macro work the DFA100 macro blows away the zoom, but it works as an OK solution until you get a dedicated macro.
12-22-2010, 02:37 AM   #4
Inactive Account




Join Date: Dec 2010
Location: Italy
Photos: Albums
Posts: 32
In addiction extension tubes are not really effective with long lenses, as the magnification obtained is given by the proportion of extension/focal lenght.

It means that in order to get to 1:2 with a 300mm lens youhave to extend 150mm, summing the extension the lens already has and extension tubes. It make a really long awkward thing to use, btw...


Last edited by Huck Finn; 12-23-2010 at 05:48 AM.
12-22-2010, 04:25 AM   #5
Veteran Member
yeatzee's Avatar

Join Date: Feb 2009
Location: Temecula
Photos: Gallery | Albums
Posts: 3,675






10:1 macro's of a jumping spider using:




just for fun
12-23-2010, 04:59 AM   #6
Veteran Member
RioRico's Avatar

Join Date: Jun 2008
Location: Limbo, California
Posts: 11,264
@yeatzee,
Great shots! I'll guess that your 10X setup is something like the 55-300 with a 28mm reverse-stacked on it. And a nice solid tripod.

@dmfw,
The easy way to get macro (1X and greater) with your 55-300 is with a Raynox DCR-150 or -250. And the easy way to get micro (10X and greater) is by reverse-stacking a 24mm or 28mm manual prime onto your zoom. All that's needed is a cheap thread-reversal ring, and maybe a step-ring if the primary (mounted on the body) and the secondary (reversed lens) don't have identical front threads. Magnification is easy to calculate: M= P/S so a 24mm secondary stacked on a 300mm primary gives 300/24= 12.5X which is in the microphotography realm.
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!
k-mount, lens, macro, macro for pentax, pentax, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Is the Pentax DA 55-300 mm lens worth the $300+?...No choubacca Pentax SLR Lens Discussion 44 04-14-2009 09:01 AM
Tammy 70-300 LD Di MACRO or Sigma 70-300 APO DG MACRO Ben Hunt Pentax SLR Lens Discussion 17 01-02-2009 06:11 PM
For Sale - Sold: Pentax AF360 Flash and Sigma 70-300 Macro Lens - $100 Ari Sold Items 2 12-01-2008 11:09 AM
Lens test: A100/4 macro vs. DA55-300 @ ca. 100mm heatherslightbox Pentax SLR Lens Discussion 29 07-02-2008 03:42 PM
Pentax FA J 75-300 lens vs. Sigma 70-300 APO DG Clem Nichols Pentax SLR Lens Discussion 2 04-09-2007 07:51 AM



All times are GMT -7. The time now is 05:10 AM. | See also: NikonForums.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