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Forum: General Photography
06-07-2022, 10:04 PM
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You can check-out any time you like, but you can never leave!
:lol:
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Forum: Pentax K-3 III
06-15-2021, 09:34 PM
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Koa‘e‘ula
Red-tailed Tropicbird, Phaethon rubricauda rothschildi
Hālona Cove, O'ahu, Hawai'i
Sigma 300mm f/2.8 EX APO with 1.7x TC
1/2000s f/4.0 at 300.0mm iso1000
Ae'o
Hawaiian Stilt, Himantopus mexicanus knudseni
Kaelepulu Wetlands, O'ahu, Hawai'i
Sigma 300mm f/2.8 EX APO with 1.7x TC
1/1000s f/5.6 at 300.0mm iso1600
Feeding Time
'Alae kea (aka 'Alae Ke'oke'o)
Hawaiian Coot, Fulica alai
Kaelepulu Wetlands, O'ahu, Hawai'i
Sigma 300mm f/2.8 EX APO with 1.7x TC
1/1000s f/4.0 at 300.0mm iso640
Koa‘e‘ula
Red-tailed Tropicbird, Phaethon rubricauda rothschildi
Hālona Cove, O'ahu, Hawai'i
Sigma 300mm f/2.8 EX APO with 1.7x TC
1/2000s f/4.0 at 300.0mm iso400
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Forum: Pentax K-3 III
06-16-2021, 12:10 PM
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Keeper rate was much better one I got the settings dialed in for BIF, at least with these birds. Tropicbirds are pretty big compared to cardinals.
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Forum: Pentax K-3 III
06-16-2021, 12:18 PM
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I am now, at least with mid to large sized birds. I seem to be getting a much better keeper rate than with my K-5IIs. Took a while to get the settings dialed in. Now I have to try this with smaller birds. Not sure if the settings that work for these tropicbirds will work with small birds…
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Forum: Mini-Challenges, Games, and Photo Stories
02-27-2016, 11:33 PM
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Waimea Bay, Oahu, Hawaii
The Bay called the Day and Eddie went on February 25, 2016 in what is being called the biggest Eddie ever with 60' (18.28 meter) waves at times. Here are a few photos from that day.
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The rest are here...
All images taken with a Pentax K-5IIs with a Sigma 300mm f2.8 APO DG lens and a 1.7X TC
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Forum: Pentax K-3 III
05-01-2021, 09:45 PM
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Just to clarify, when you're talking about "GPS via the phone app" running down the battery, are you talking about the camera battery, the phone battery, or both?
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Forum: Mini-Challenges, Games, and Photo Stories
07-24-2011, 11:22 PM
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Here's a few from my last trip to Maui, Hawaii.
Haleakala Sunset
Haleakala Sunrise
Haleakala in the clouds
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Forum: Pentax News and Rumors
03-16-2020, 11:57 PM
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Condolences to his family. May he rest in peace... :(
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Forum: Pentax News and Rumors
09-23-2019, 11:56 AM
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PENTAX IS DOOMED!!!:lol:
Seriously, I hope that this stuff about the new camera is all true!
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Forum: Post Your Photos!
07-25-2018, 12:02 AM
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Here are a few photos taken with an IR converted K10D
The Buddha
Lahaina Jodo Mission, Maui, Hawai'i
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Haleakalā
On the flight back from Hilo, Big Island of Hawai'i
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Shadows Sweeping Across the Crater
Haleakalā National Park, Maui, Hawai'i
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Kahoʻolawe from Makena Landing
Makena Landing , Maui, Hawai'i
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The Byodo-In Temple
Valley of the Temples Memorial Park
Kahaluu, O'ahu, Hawaii
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Forum: Pentax SLR Lens Discussion
12-17-2017, 08:38 PM
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Forum: Troubleshooting and Beginner Help
09-13-2016, 11:22 PM
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Using an IR filter on a non-converted camera will have an impact in terms of usability. Non-converted cameras have an IR blocking filter (hot mirror) usually installed in front of the sensor. Placing an IR filter in front of the lens only lets IR light through which is then mostly blocked by the hot mirror installed in the camera. Its sort of like placing a strong ND filter on a non-converted camera then trying to take a visible light photo. The net effect is that you will need longer exposure times for the given ISO and f-stop setting than you would with a converted or normal camera.
A clear converted camera replaces the hot mirror with a clear filter which can pass through all the light visible to most digital camera sensors (some UV, visible, & IR). Some folks go with this option and purchase a variety of different screw in filters (UV only pass, visible only pass, visible + UV pass, visible + IR pass, various different IR filters, etc.) in order to get different effects. The advantage of this is that your camera will not need long exposure times for the same ISO and f-stop settings.The disadvantage is that you will not be able to see anything with any filters that block visible light if you are using an SLR with a traditional viewfinder. This makes it harder to focus since you will probably need to compose, focus, then install your filter without disturbing the camera. This isn't so much of an issue if you use liveview to focus and compose. The other disadvantage is that you may need to get different sizes of the filters you like to fit different lenses. You could also get oversized filters that fit your largest lens, then use stepping rings to fit those filters on your smaller lenses. These filters are not cheap...
A fully IR converted camera replaces the hot mirror with a dedicated IR (or UV) filter will not have the same flexibility as a camera converted with a clear filter. You will only have the use of a single filter, basically whatever was installed by the tech. This is not an issue if you like the look of particular filter (UV, 590nm IR, 720nm IR, 830nm IR, etc.).
Here are some samples from an 830nm IR converted Pentax K10D. Good luck with your conversion!
The Palace of Fine Arts
The Marina District, San Francisco, California
Focal Length: 18 mm
Exposure Time: 1/250 sec
Aperture: f/11
ISO Equivalent: 400
Maipalaoa Beach Park
Maili, Waianae Coast, Oahu, Hawaii
Focal Length: 15 mm
Exposure Time: 1/180 sec
Aperture: f/11
ISO Equivalent: 400
Haleakala Rising from the Sea
Flying back from Kona, Big Island of Hawaii
Focal Length: 26 mm
Exposure Time: 1/60 sec
Aperture: f/9.5
ISO Equivalent 400
Pupukea Beach
North Shore, Oahu, Hawaii
Focal Length: 18 mm
Exposure Time: 1/180 sec
Aperture: f/11
ISO Equivalent: 400
Here is a link to my full gallery... |
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Forum: Pentax SLR Lens Discussion
03-18-2016, 09:36 PM
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Thank you all for your responses. Just to clarify, the primary uses of this lens will be for wildlife (mainly birding) and surf photography. Also, I already shoot with a Sigma 300mm f2.8 with the Pentax-F 1.7X AFTC. It's a good combination, but I'm looking for a bit more. Also, I'm not too concerned with weather sealing since I have lots of experience using a "Storm Jacket" cover with the 300mm. I'm just trying to feel out which of the two lenses I'd want to get to hit 500mm or 560 mm natively. I'd love a modernized 600f4 or even a Sigmonster in K mount, but who knows if such a thing is ever coming out...
EDIT: Here are some photos I've taken with the Sigma 300mm & the Pentax-f 1.7
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Forum: Pentax News and Rumors
06-13-2015, 03:39 PM
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In my experience, NDs are rubbish for a photoshoot where you need reliable autofocus and you have to deal with strong ambient light.
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Forum: Pentax News and Rumors
04-22-2015, 03:40 PM
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Forum: Pentax K-3 Photo Contest
04-28-2014, 12:39 AM
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Sunset panorama from the top of Haleakala National Park, Maui, Hawaii on June 9, 2013
Camera Equipment: Pentax K-5IIs with a Pentax SMC-DA 21mm f/3.2 AL Limited in portrait orientation
Camera settings: Manual exposure, manual focus - 1/80s f/11.0 at 21.0mm iso160
Panorama type: 15 image stitch
Support equipment: Manfrotto 300N panoramic head on a 438 leveler
Approximate GPS coords (from Google Earth): 20°42'37" N 156°15'12" W
This image is from one of my favorite places in Hawaii, Pu'u'ula'ula (Red Hill) at Haleakala National Park. Sunset at Haleakala is a magical time, if you're lucky.
Many have heard about the magnificent sunrises here. Few know that the sunsets can be just as awe inspiring as the sunrises, just in reverse...
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Forum: Mini-Challenges, Games, and Photo Stories
12-28-2013, 06:51 PM
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Thanks!
Here's a few more surfing shots at Pipeline, Hawaii on Christmas Day 2013.
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The rest are here... |
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Forum: Mini-Challenges, Games, and Photo Stories
01-25-2014, 09:06 PM
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Here's a few from Waimea Bay on the North Shore of Oahu, Hawaii
1)From Pupukea Beach. This is about 1/3 of a mile (500 meters) from the lineup and through some heavy mist...
2) Logjam takeoffs. This is from a vantage point roughly 1/10 of a mile (300 meters) from the lineup on the north side of the Bay...
3) Four board drop
4) Thought these two took off holding hands...
5) These guys are practically touching on the drop...
More photos here... |
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Forum: Post Your Photos!
12-28-2013, 06:47 PM
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Forum: Mini-Challenges, Games, and Photo Stories
12-02-2013, 12:43 AM
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Big wave season is finally starting up in Hawaii! Here's a few shots from Pipeline on the North Shore of Oahu, Hawaii on November 29, 2013
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The rest are here... |
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Forum: Post Your Photos!
12-02-2013, 12:37 AM
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Here's a few shots from Pipeline on the North Shore of Oahu, Hawaii on November 29, 2013
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The rest are here... |
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Forum: Pentax News and Rumors
10-05-2013, 01:16 PM
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It's probably just water soluble ink. The first rain storm you use that lens in, and the ink washes right off revealing the "RICOH" right underneath it... :p
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Forum: Lens Clubs
08-08-2011, 09:43 PM
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It has been my experience that the kit lens work fairly well with IR images. These were shot with an IR modified Pentax K10D and the 18-55.
Byodo-In Temple, Valley of the Temples, Oahu, Hawaii
Wahiawa Pineapple Field, Oahu, Hawaii
Half Dome, Yosemite National Park, California
The Old Tasting Room, Tedeschi Winery, Ulupalakua Ranch, Maui
There are a bunch more here. |
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Forum: Pentax News and Rumors
04-02-2013, 02:50 PM
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God help Pentax Ricoh if they ever do make an official announcement on an April 1st. It would probably go something like this except substitute Pentax K-whatever for Half Life 3 and camera for game...
From the DORKLY Webcomic... |
