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Forum: Lens Sample Photo Archive 02-06-2018, 06:45 AM  
Pentax DA 40mm f/2.8 Limited samples
Posted By MartinDK
Replies: 64
Views: 34,577
Rondec, stunning photos!

I am quite fond of my DA 40mm. For landscape job, I actually prefer it to my DA HD 15mm. The 40mm is simply much sharper edge-to-edge.

A couple of HDR photos from yesterday:



Forum: Lens Clubs 07-15-2014, 08:06 AM  
The 15mm Limited controls my mind - club
Posted By MartinDK
Replies: 12,402
Views: 2,290,402
I like it. :-)


Sankt Markus Kirke

---------- Post added 15-07-14 at 17:14 ----------


Pablo, it's a pleasure to look at your photos, let the eyes go this way and that, taking in the details, the life of a city. :-)
Forum: Lens Clubs 07-06-2014, 08:26 AM  
The 15mm Limited controls my mind - club
Posted By MartinDK
Replies: 12,402
Views: 2,290,402


---------- Post added 06-07-14 at 17:30 ----------

Camo, wonderful photos. :-)
Forum: Lens Clubs 06-22-2014, 03:30 PM  
The 15mm Limited controls my mind - club
Posted By MartinDK
Replies: 12,402
Views: 2,290,402
Pablom, thumbs up. Really nice shots and post-processing!

Water Tower by Martin Nystrup Rasmussen, on Flickr
Forum: Lens Clubs 06-20-2014, 03:32 PM  
The 15mm Limited controls my mind - club
Posted By MartinDK
Replies: 12,402
Views: 2,290,402
Forum: Photo Critique 06-20-2014, 03:59 AM  
Nature Composition is my weak point
Posted By MartinDK
Replies: 15
Views: 2,498
Hi Adam,

"The Landscape Photography Workshop" by Ross Hoddinott and Mark Bauer is a great starter book with chapters on landscape composition and best locations (ISBN: 978-1-86108-891-8). It changed my approach to nature and landscape photography.

Regards,

Martin
Forum: Lens Clubs 06-20-2014, 02:42 AM  
The 15mm Limited controls my mind - club
Posted By MartinDK
Replies: 12,402
Views: 2,290,402
Thanks, disco_owner. :-)

---------- Post added 20-06-14 at 11:46 ----------


Welcome to the thread. I am new here as well. :-)
Forum: Lens Clubs 06-18-2014, 04:00 PM  
The 15mm Limited controls my mind - club
Posted By MartinDK
Replies: 12,402
Views: 2,290,402
Forum: Lens Clubs 06-18-2014, 10:32 AM  
The 15mm Limited controls my mind - club
Posted By MartinDK
Replies: 12,402
Views: 2,290,402
Cornholio, thanks for the tip. I'll take "the 15mm" out for a walk later. ;-)

Btw, to my surprise, at f/4.0 the lens does a decent job. Fairly good center sharpness:

EDIT: Actually I think that the center sharpness at f/4.0 is slightly better than at f/8.0.


Test shot with 15mm Limited. f/4.0 by Martin Nystrup Rasmussen, on Flickr
Forum: Lens Clubs 06-13-2014, 04:49 AM  
The 15mm Limited controls my mind - club
Posted By MartinDK
Replies: 12,402
Views: 2,290,402
I haven't figured out yet how to shoot acceptable sharp photos consistently with this lens.:hmm: At times it produces really soft photos, even with the camera mounted on a tripod and using "mirror lock-up". Especially the corners can be awfully soft. Then suddenly, to my surprise, it produces fairly sharp photos (the "sweet spot" seems to be around f/8.0). I am quite lost...:lol:

HDRi under windy conditions:

Untitled by Martin Nystrup Rasmussen, on Flickr
Forum: Lens Clubs 06-08-2014, 07:12 AM  
The 15mm Limited controls my mind - club
Posted By MartinDK
Replies: 12,402
Views: 2,290,402
lexluther, nice light burst capture!

Untitled by Martin Nystrup Rasmussen, on Flickr

Untitled by Martin Nystrup Rasmussen, on Flickr
Forum: Lens Clubs 06-07-2014, 02:01 AM  
The 15mm Limited controls my mind - club
Posted By MartinDK
Replies: 12,402
Views: 2,290,402
... and nice article on daylight long exposures using a ND Filter. :)
Forum: Lens Clubs 06-06-2014, 07:29 AM  
The 15mm Limited controls my mind - club
Posted By MartinDK
Replies: 12,402
Views: 2,290,402
I got my 15mm Limited lens two days ago and went for a walk today. I might get used to this lens.:)

Defence line Vestvolden (The Western Enceinte) by Martin Nystrup Rasmussen, on Flickr

Defence line Vestvolden (The Western Enceinte) by Martin Nystrup Rasmussen, on Flickr
Forum: Lens Clubs 05-27-2014, 09:29 AM  
The 15mm Limited controls my mind - club
Posted By MartinDK
Replies: 12,402
Views: 2,290,402
Matt et al, stunning photos! :-) This thread has convinced me... I ordered the 15mm today. ;-)
Forum: Lens Clubs 08-26-2012, 02:51 AM  
Macro by any means necessary club
Posted By MartinDK
Replies: 635
Views: 133,041
125mm extension tubes + reversed Pentax-M 28mm/f3.5 (shot at f/10.0):



Zebra Spider / Almindelig Zebraedderkop, Salticus scenicus by Martin Nystrup Rasmussen, on Flickr

About 60mm extension tubes + reversed Pentax-M 28mm/f3.5 (shot at f/10.0):


Goggles by Martin Nystrup Rasmussen, on Flickr
Forum: Lens Clubs 07-29-2012, 02:02 AM  
DA* Club
Posted By MartinDK
Replies: 5,909
Views: 945,513
Forum: Lens Clubs 05-01-2012, 03:27 AM  
Macro by any means necessary club
Posted By MartinDK
Replies: 635
Views: 133,041
I am new to macro arthropod photography and quite excited by what I see through the lens.

I have been experimenting for months to find a satisfying solution to go beyond 1:1 magnification (I have the Pentax-D FA Macro 100mm/f2.8 lens).

After finally solving the "extension tube haze problem" (using light baffles of black card), I think I might stick to my current macro setup: A reversed MF 35mm/f2.0 lens, cheap extension tubes and a diffused flash.

Test shot, handheld:

Forum: Lens Clubs 04-30-2012, 11:26 PM  
Macro by any means necessary club
Posted By MartinDK
Replies: 635
Views: 133,041
Incredible macro work!:)
Forum: Lens Clubs 04-30-2012, 11:17 PM  
*Macro* lens club
Posted By MartinDK
Replies: 5,138
Views: 686,900
Ah, my mistake but anyway, thanks for commenting and the tip. Maybe I shouldn't neglect my D FA Macro 100mm, then. That's a great lens.:-)

Regards,

Martin
Forum: Lens Clubs 04-28-2012, 01:39 PM  
*Macro* lens club
Posted By MartinDK
Replies: 5,138
Views: 686,900
Photos taken with a reversed Pentax-M 35mm/f2.0 lens, cheap extension tubes and a diffused flash. The test subject is - unfortunately - a dead Andrena fulva.:-/

Regards,

Martin



Forum: Lens Clubs 04-22-2012, 02:46 AM  
The Raynox Macro club
Posted By MartinDK
Replies: 947
Views: 303,125
You need a step-down ring to adapt a smaller filter (Raynox/43mm thread) on a larger lens (D FA Macro 100mm/49mm thread). I haven't tried a step-down ring yet (ordered it on Thursday, though) but using a step-down ring makes more sense to me than the other way around.

Regards,

Martin
Forum: Lens Clubs 04-22-2012, 02:43 AM  
The Raynox Macro club
Posted By MartinDK
Replies: 947
Views: 303,125
Hello Jay,

I've got the D FA 100mm Macro lens as well and just bought the Raynox DCR-250. The Raynox won't fit the lens unless you buy a step-down ring (49mm-43mm). The Raynox has a 43mm thread.

Regards,

Martin
Forum: Troubleshooting and Beginner Help 04-16-2012, 07:09 AM  
Buying advice, second flash unit: Metz Mecablitz 36 AF-5 Digital
Posted By MartinDK
Replies: 1
Views: 3,070
I'm new to flash photography. I want to buy a second flash for some extreme studio macro photography (my main flash is a Metz Mecablitz 50 AF-1, my camera a Pentax K-5).

I was thinking about buying a Metz Mecablitz 36 AF-5 but I'm lost here: Can I fire it wirelessly (P-TTL remote mode) as a slave unit triggered by the 50 AF-1 (connected to the K-5 with an off-camera cord)?

Regards,

Martin
Forum: Lens Clubs 04-06-2012, 02:04 AM  
DA* Club
Posted By MartinDK
Replies: 5,909
Views: 945,513
Incredibly sharp photos! Absolutely stunning. Now I'm really undecided what to buy in the near future - the DA 15mm, DA* 50-135mm or this one.
Forum: Lens Clubs 04-06-2012, 01:59 AM  
DA* Club
Posted By MartinDK
Replies: 5,909
Views: 945,513
Dice, thank you.:-)

I think that the photos taken with the lens are generally sharp and colourful. However, on one occasion I've experienced an odd auto focus error using the battery grip to focus. Well, in fact I couldn't focus at all - not until jeg turned the camera off and then back on.
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