PIX 2015
J Posthuma

J Posthuma

Lives in Netherlands Utrecht, Netherlands
Joined on Feb 6, 2011

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Snapshot of threads updated recently in which you have recently participated.

Subject Forum Last post
Help reducing noise in LR6 for star shots Pentax SLR Talk 2 months ago
K-3 II & 150-450mm @ Oulton Park motorsports track Pentax SLR Talk 2 months ago
Nature Riddle Pentax SLR Talk 10 months ago
Saddleback caterpillar K-01/FA100 macro w/T9-2X closeup adapter Pentax SLR Talk 11 months ago
Show me YOUR "lonely benches" :-) Pentax SLR Talk 11 months ago
K30 fried after using in rain Pentax SLR Talk Jul 2, 2014
High ISO Deer Photos (10 images) Pentax SLR Talk Apr 14, 2014
Barred Owl Pentax SLR Talk Apr 12, 2014
Sharpest lens I ever had Pentax SLR Talk Apr 11, 2014
Help me out: How to crop? Pentax SLR Talk Apr 11, 2014
Jupiter with Meade ETX90 and Pentax Q Astrophotography Talk Forum Mar 11, 2014
Sigma 8-16 does Catch-In-Focus Pentax SLR Talk Feb 13, 2014
Jupiter with SMC 500mm f4.5 and K5IIs Pentax SLR Talk Feb 11, 2014
OT: Duck's POOING in action (1 pic) Pentax SLR Talk Feb 11, 2014
Some tilt-fun Pentax SLR Talk Feb 9, 2014
Andromeda in a Light Polluted Sky Astrophotography Talk Forum Feb 6, 2014
small anecdote Pentax SLR Talk Jan 31, 2014
Multiple Exposure Technique for Star Fields Astrophotography Talk Forum Jan 29, 2014
Finished building the Barndoor tracker. Astrophotography Talk Forum Jan 25, 2014
T-Adapter/Barlow Lens Question Astrophotography Talk Forum Jan 23, 2014
Samyang 800mm Mirror lens Part I Astrophotography Talk Forum Jan 18, 2014
Perseid Composites Astrophotography Talk Forum Jan 17, 2014
The Old Man and His Friend Pentax SLR Talk Jan 16, 2014
How can I improve my moon images? Astrophotography Talk Forum Jan 15, 2014
Quadrantits meteor shower. failed !!! Astrophotography Talk Forum Jan 15, 2014
New K-3 review from Ed at photouniverse Pentax SLR Talk Jan 14, 2014
Moon with the Tamron SP 500mm F/8 Mirror Lens. Astrophotography Talk Forum Jan 13, 2014
How to improve efficiency of my workflow? Astrophotography Talk Forum Jan 13, 2014
More Friendly Deer (10 photos) Pentax SLR Talk Jan 13, 2014
Moon Mosaic/Pano finished! Astrophotography Talk Forum Jan 13, 2014
'Merlin' tracking mount for beginner? Astrophotography Talk Forum Jan 13, 2014
Coastal (California+) - Feel free to Add Your Shots Pentax SLR Talk Jan 13, 2014
Imaging Through Murky Skies - M35 & NGC 2158 Astrophotography Talk Forum Jan 13, 2014
Rosetta Nebula - 180mm F/2.5 Astrophotography Talk Forum Jan 12, 2014
THE BEST CAMERA FOR MILKYWAY Astrophotography Talk Forum Jan 12, 2014
Farm lost in the fog with Da 20-40mm ( photo) Pentax SLR Talk Jan 12, 2014
M42 with Canon 70D and TV Genesis SDF Astrophotography Talk Forum Jan 12, 2014
Warning Time Lapse contains stars and daylight ...https://vimeo.com/83778705 Astrophotography Talk Forum Jan 12, 2014
one more attempt at horsehead and flame Astrophotography Talk Forum Jan 12, 2014
A few nightscapes of our local pier with the DA 20-40 Pentax SLR Talk Jan 12, 2014
The Marble Pentax SLR Talk Jan 12, 2014
What 2 mp can do Pentax SLR Talk Jan 12, 2014
Samyang 800mm mirror lens Part II Astrophotography Talk Forum Jan 12, 2014
Comet Panstarrs + aurora (E-330 + Hexanon 55mm F/1.2, ISO 800, 4sec, f=1.2) Astrophotography Talk Forum Jan 12, 2014
Rather new here, some results with moderate means Astrophotography Talk Forum Jan 12, 2014
Comparing EXIF info. on Photo I took from my Gallery. Pentax SLR Talk Jan 11, 2014
Photos: Paths (K-5+DA15&DA70) Pentax SLR Talk Jan 11, 2014
Welcome interloper Pentax SLR Talk Jan 11, 2014
K3 in very low light Pentax SLR Talk Jan 10, 2014
Mantis trick . Pentax SLR Talk Jan 10, 2014