Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Pentax / Samsung dSLR, K Mount Mirrorless

Thread Tools Search this Thread
Old Jul 1, 2011, 3:52 PM   #1
Senior Member
snooked's Avatar
Join Date: Apr 2007
Location: South Florida
Posts: 1,411
Default Macro Lens Experiment

After using my DA* 300mm F4 to get some quasi macro shots last week I played around with some ideas at home. I tried the 300mm set to manual focus to see if the Catch In Focus would work with it. It did! I then tried using the 300mm with my AF 1.7X adapter. It worked with a small focus range that adjusted vey fast when the lens moved into position. I then tried the AF adapter with my Vivitar Series 1 80 180mm flat field Macro lens. It also worked.

Today I tried these set ups in the field. The first two photos were with the K5, DA* 300mm, AF Adapter combo. The third and fourth images were using the Vivitar, AF Adapter combo.

Attached Images
snooked is offline   Reply With Quote
Sponsored Links
Old Jul 1, 2011, 5:45 PM   #2
Senior Member
snostorm's Avatar
Join Date: Jan 2004
Location: Chicago Suburb, IL, USA
Posts: 2,770

Hi Ed,

Very nice results!

I'm assuming that you used AF for these.

I've been using the 1.7x AFA and AF-C for even 1:1 or higher mag ratios for a while now. The very short focusing range (only a few mm at 1:1 or higher) of the AFA makes Auto Focus a practical technique for macro shooting for me, and just adds more to its value. An added benefit is the deeper DOF from the longer shooting distances that are possible because of the additional 1.7x magnification. The loss of 1.5 stops of light does make the use of flash almost mandatory, but I like to shoot macros handheld, so I'd be using a flash anyway. . .

I'll admit to being an unmitigated fan of the 1.7x AFA. I have one on my cameras more often than not.

snostorm is offline   Reply With Quote
Old Jul 1, 2011, 11:04 PM   #3
Senior Member
mtngal's Avatar
Join Date: Nov 2005
Location: Frazier Park, CA
Posts: 16,087

Interesting to compare the two lenses with the AFA. I prefer the color/tone/contrast in the first two pictures more than the second two. The last one is so sharp though and it makes up for anything lost in contrast, something you could adjust with post processing. Both combinations look really, really good.
mtngal is offline   Reply With Quote
Old Jul 2, 2011, 3:53 AM   #4
Senior Member
Tachikoma's Avatar
Join Date: Jul 2007
Location: Wales
Posts: 1,086

Wow love the second shot, nice work!
Pentax K-7
Tamron 90mm SP Di Macro
Tamron Adaptall 2 - 28mm, 28-80mm, 500mm Mirror
Pentax KAF - 18-55mm WR, 28-105mm PowerZoom
Pentax K - 50mm f/2, 50mm f/1.7, 28mm f/2.2
Tachikoma is offline   Reply With Quote
Old Jul 5, 2011, 4:50 PM   #5
Senior Member
Goldwinger's Avatar
Join Date: May 2008
Location: Winter Haven, Florida
Posts: 6,515

Yeah, I really like the grasshopper shot!

Life's a breeze on a Goldwing...
Goldwinger is offline   Reply With Quote
Old Jul 6, 2011, 2:41 PM   #6
Senior Member
Frogfish's Avatar
Join Date: Feb 2006
Location: Shanghai, China
Posts: 2,774

Excellent ... I've got to try this now !
Pentax : 15 Ltd, 77 Ltd, 43/1.9 Ltd, Cosina 55/1.2, DA*300/4, Contax Zeiss Distagon 28/2.8, Raynox 150/250, AFA x1.7, Metz 50 af1.

Nikon : D800, D600, Sigma 500/4.5, Sigma 120-300/2.8, Zeiss Distagon ZF2 - 21/2.8, Zeiss Distagon ZF2 - 35/2.0, Nikkor 85/1.8G, Sigma 50/1.4. Nikon x1.4 TC, Sigma x2.0 TC
Frogfish is offline   Reply With Quote
Old Jul 6, 2011, 5:58 PM   #7
Senior Member
kashka's Avatar
Join Date: Apr 2005
Location: Minnedosa Manitoba
Posts: 1,158

Very cool grasshopper!
kashka is offline   Reply With Quote
Old Jul 6, 2011, 7:00 PM   #8
Senior Member
Join Date: Feb 2005
Location: East Central Vermont
Posts: 1,890

Wow Ed, those are amazing shots!
mtnman is offline   Reply With Quote
Old Jul 13, 2011, 9:11 PM   #9
Senior Member
tacticdesigns's Avatar
Join Date: Sep 2008
Posts: 1,064

Really nice! My fav is the 2nd. The colour and detail is amazing!
tacticdesigns is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 5:44 AM.