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Forum: General Talk
03-25-2024, 07:15 PM
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I know it is designed for capturing the night sky... but what about a -properly filtered- lens shooting a photo of the sun?
Is the filter dark enough to save the sensor, but still bright enough to allow for a photograph with a short exposure time?
Does the Astrotracer function moving the sensor accounting for the rotation of the earth help with the sun, or cause issues?
Just curious. Thanks for any feedback.
---------- Post added 03-25-24 at 07:22 PM ----------
When I searched for info on this, I didn't see the results that are in the "similar thread" list below. I think this was somewhat indirectly answered.
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Forum: Sold Items
03-16-2024, 10:30 PM
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Forum: Sold Items
03-09-2024, 11:42 PM
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PentaxForums.com Marketplace Listing
Item for Sale
HD Pentax-DA 1.4x AW AF Rear Converter
Asking Price
275.00 USD
Item Location
Oregon (United States)
Item Description
HD Pentax-DA 1.4x AW AF Rear Converter
Works fine, zero issues with DC, SDM, or screwdrive lenses.
I used it mainly with the DA*50-135 and the DA*300. Great results on both.
Parting with all of my APS-C gear, and this is the last of it.
Are you the original owner of the item being sold?
Yes
Are you selling or trading this item?
Selling
Item Condition (Key)
Used
Like New
Shipping Destinations
North America
Shipping Charge
USPS
Shipping Services
USPS (Flat rate included)
Accepted Payment Types
PayPal
Return Policy & Additional Details
If not as listed
Please send me a private message if interested in the item!
EDIT: One of the images looks odd, with reflections in the glass. I added a view looking through the converter onto a sheet of paper. The texture you see through the clear glass is from the paper itself.
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Forum: Sold Items
03-09-2024, 11:23 PM
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PentaxForums.com Marketplace Listing
Item for Sale
SMC Pentax-DA* 50-135mm F2.8 ED [IF] SDM
Asking Price
350.00 USD
Item Location
Oregon (United States)
Item Description
SMC Pentax-DA* 50-135mm F2.8 ED [IF] SDM Lens
Great copy purchased in 2007 as a pre-order. Zero issues with SDM or other lens functions, fully functional with no fungus, sticky blades, etc. Screwdrive has never been used, so I don't know about its functionality.
Includes the box, literature, case, hood, and caps.
Note: The rear ring (not the notched one, the solid one) that the lens hood attaches to, had a partial split perhaps six years ago. It was glued back down and had worked fine ever since. This is external only, and does not affect lens operation. A close up of the area is included. Sorry for the cell phone photo...
Mechanically and optically in excellent condition. I marked this as "good" because of the lens hood ring.
Are you the original owner of the item being sold?
Yes
Are you selling or trading this item?
Selling
Item Condition (Key)
Used
Good
Shipping Destinations
North America
Shipping Charge
USPS
Shipping Services
USPS (Flat rate included)
Accepted Payment Types
PayPal
Return Policy & Additional Details
If not as listed
Please send me a private message if interested in the item!
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Forum: Sold Items
03-09-2024, 04:21 PM
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PentaxForums.com Marketplace Listing
Item for Sale
Pentax O-GPS1
Asking Price
100.00 USD
Item Location
Oregon (United States)
Item Description
You will know your latitude, longitude, elevation, and orientation along with all of the normal photograph exposure details.
It is the BEST way to save where you were, for logging or returning to the spot another time. Works on almost all Pentax digital SLR cameras. KP, K-3 series, K-S2, K-S1, K-70, K-50, K-30, K-5 family, K-r, 645D, 645Z, K-01, and more.
Also works as a GPS navigation aid or compass if needed, camera dependent.
Printed manual included.
Are you the original owner of the item being sold?
Yes
Are you selling or trading this item?
Selling
Item Condition (Key)
Used
Excellent
Shipping Destinations
North America
Shipping Charge
Included
Shipping Services
USPS (Included)
Accepted Payment Types
PayPal
Return Policy & Additional Details
Sale is final
Please send me a private message if interested in the item!
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Forum: Photographic Equipment for Sale
03-05-2024, 12:54 AM
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PentaxForums.com Marketplace Listing
Item for Sale
HD Pentax-DA 16-85mm F3.5-5.6 ED DC WR
Asking Price
325.00 USD
Item Location
Oregon (United States)
Item Description
HD Pentax-DA 16-85mm F3.5-5.6 ED DC WR
Lightly used, and always with a protective filter in place. Never used in the rain, dust, etc. I am changing to a full frame lens and this is your chance for a new one too!
Very convenient 24-128mm equivalent in 35mm environment.
Includes the original box and literature.
Are you the original owner of the item being sold?
Yes
Are you selling or trading this item?
Selling
Item Condition (Key)
Used
Excellent
Shipping Destinations
United States
Shipping Charge
Included
Shipping Services
USPS (Flat rate included)
Accepted Payment Types
PayPal
Return Policy & Additional Details
No returns unless not as described
Please send me a private message if interested in the item!
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Forum: Pentax K-3 III
01-20-2024, 05:06 AM
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I think the DA* 50-135 is unchanged moving from a K5 to a K3iii. Still a great lens, and pretty much my go to. (A pre-ordered first run of the lens with no SDM issues)
I bought the DA* 300 after getting the K3iii, so I don't have a before and after.
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Forum: Pentax K-3 III
01-15-2024, 02:24 PM
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I am glad it ended up the way it did. Good to know that it can happen.
...and "Hello from another Oregonian!"
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Forum: Pentax DSLR Discussion
08-06-2023, 02:29 AM
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When it was still somewhat new, it was frequently covered in waterfall spray... and once it was drenched in a HEAVY downpour up a canyon in the redwoods. It was a horrible storm, and it came through without any issues. That being said, the camera is old enough that I wouldn't do that today...
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Forum: Pentax SLR Lens Discussion
07-12-2021, 12:07 PM
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I am probably split... About 45% of the time it is the 16-85mm or 50-135mm. 10% of the time, something else.
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Forum: Sold Items
10-13-2018, 10:59 AM
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Forum: Sold Items
10-11-2018, 02:59 AM
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PentaxForums.com Marketplace Listing
Item for Sale
Package with SMC Pentax-DA 18-135mm F3.5-5.6 ED AL [IF] DC WR
Asking Price
275.00 USD
Item Location
Salem, Oregon (United States)
Item Description
Lens package consisting of:- Pentax SMC DA 18-135mm F/3.5-5.6 ED AL (IF) DC WR Lens
- Pentax Lens Case S80-120 (Soft)
- Tiffen 62mm Digital Ultra Clear Filter
- Hoya 62mm (Moose's) Warm Circular Polarizer Glass Filter
I picked this up as a travel lens/all-in-one and it never let me down... A gigantic upgrade from the 18-55mm kit lens.
I am using my 16-85mm lens more than this gem, so I am parting with it. Since I won't have the lens, I won't need the soft case or the filters. (This is the only lens I have that uses a 62mm filter thread size.)
The lens is in excellent condition. The only issue I am aware of is some scuffing on the lens hood. Optics are clean and clear and the blades work normally. Zero focus issues on my K-5, with standard or live view.
Zoom does not creep, it stays where you put it.
Extended 7x 18-135mm Zoom Range
35mm Equivalent: 27.5-207mm
Weather Resistant
Compact, Lightweight Design
Quick, Quiet Autofocus Operation
SP Coating Repels Dust, Water, & Grease
Fast Switching From Auto to Manual Focus
Aspherical Lens Elements
Reviews on this lens:
SMC Pentax-DA 18-135mm F3.5-5.6 ED AL [IF] DC WR Reviews - DA Zoom Lenses - Pentax Lens Reviews & Lens Database
New: $396.52
Information on the extra items.
Pentax Lens Case S80-120 (Soft)
Pentax Lens Case S80-120 (Soft) 33924 B&H Photo Video
New: $49.79
Hoya 62mm (Moose's) Warm Circular Polarizer Glass Filter
This is a circular polarizer filter and a 81A warming filter - in one filter!
Hoya 62mm (Moose) Warm Circular Polarizer Glass B-62CIRPL-W B&H
New: $40.88
Tiffen 62mm Digital Ultra Clear Filter
I used this as "bump" protection only. (Years ago a cracked filter saved a 70-210 lens...)
Tiffen 62mm Digital Ultra Clear Filter W62DIGULTCLR B&H Photo
New: $22.99
Product pics taken from my cell phone:
   
You can see the lens hood scuff here
Sample photographs provided on request.
Thank you.
Are you the original owner of the item being sold?
No
Are you selling or trading this item?
Selling
Item Condition (Key)
Used
Excellent
Shipping Destinations
United States
Shipping Charge
Included
Shipping Services
USPS
Accepted Payment Types
PayPal
Return Policy & Additional Details
No returns unless not as described
Please send me a private message if interested in the item!
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Forum: Pentax Camera and Field Accessories
10-03-2018, 08:01 AM
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I am aware of the potential stress issues with storing the camera with the GPS unit attached.
The reason I was asking about a bag was to see if anyone knew of a bag where the risk is minimized due to the (thoughtful) design of the bag. If there is a bag designed to protect the camera +GPS, I would consider it. If there isn't, then I won't be doing it.
Thanks for the feedback.
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Forum: Pentax Camera and Field Accessories
10-02-2018, 02:46 PM
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Quick bag question...
I have a good travel bag that fits my K-5 with a 18-135 lens attached. There is room for one additional lens and also some accessories. It cannot accept the K-5 with the O-GPS1 attached however... :eek:
Any suggestions on a smallish travel bag (for a minimal travel kit) that will hold the K-5 with both a lens and the GPS unit attached?
Thanks for any advice/experience!
Jim
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Forum: General Photography
12-20-2017, 07:12 PM
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I was talking to a friend about a slide duplicator assembly I made out of Lego to fit on the DA 35mm Limited Macro lens. It worked pretty good, but I didn't take any pictures of it.
Would you like to share anything that you have made for your photography hobby/job/addiction?
A cool tripod add-on, perhaps a camera stabilization system, a desktop product photo box for eBay listings, a unique backlighting system for portraits, an astrophotography barn door tracker, flash diffuser, etc. Anything you would care to share?
Feel free to share items of your own design or maybe a commercial kit that would be interesting and a time saver for those who want to try it.
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Forum: Pentax SLR Lens Discussion
12-14-2017, 04:24 PM
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I saw this page years ago... there are probably better ones, but it does a good job of explaining and demonstrating lens glass issues.
The Flashlight Test @ Ken Rockwell
In looking at this page though, I wonder if it is an issue with the cement between two bonded pieces of glass...
Re-cementing doublet elements with Canadian balsam @ MF Lenses
I am not an expert at this, just putting my two cents in.
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Forum: Photographic Technique
12-05-2017, 06:33 PM
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I think the experts are doing a good job at providing info and links for you. I'll show you what I did, for when I am out...
I have a version of this document with me when I am out taking pics in my home state of Oregon. I went to the Dark Site Finder and captured my area. I then added local information to help me when I am out. If I happen to be near LaPine (South of Bend in the illustration), for example, I can see that if I drive a short distance south or east I am in a "Typical truly dark site". If I go past Ft. Rock, I am in a "Excellent dark-sky site" according to night sky brightness Bortle scale rating.
when I am out taking (nature) pics I could access the website on a mobile device, however, I am not always in an area with service.
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Forum: Pentax SLR Lens Discussion
10-04-2017, 12:33 PM
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Thanks for the info.... I guess I hadn't noticed that I could select "Internal Focusing" and "Internal Zooming" on the lens search page.
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Forum: Pentax SLR Lens Discussion
10-04-2017, 10:13 AM
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I really like the fixed size of my DA* 50-135 lens. When zooming or focusing the lens barrel does not extend (or rotate). It seems like this enhances the weather sealing of the lens, and without the air being pulled into or pushed out of the lens when extending or contracting, a design that "causes" less dust to appear in the lens.
Do my thoughts make sense? Is this something that can be measured?
Does Pentax make any other fixed length (zoom or prime) lenses that do not extend when changing focal length or focusing (internal focusing and internal zooming)?
Thanks for any thoughts or information!
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Forum: Sold Items
10-01-2017, 08:50 PM
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PentaxForums.com Marketplace Listing
Item for Sale
Pentax K 28mm f2.0
Asking Price
600.00 USD
Item Location
Oregon (United States)
Item Description
Rare Pentax K 28mm f2.0 (Pentax build of a Zeiss Distagon "Hollywood")
This is the famous Pentax branded lens using the floating focus optic design of Dr. Erhard Glatzel. The same lens design was used in the Zeiss Distagon 28mm F/2 T* "Hollywood". The Pentax build of this lens came from a partnership with Zeiss.
SMC Pentax 28mm F2 Reviews - K Prime Lenses - Pentax Lens Reviews & Lens Database
--
I am not an expert on legacy camera lenses, so I will try to describe and document everything I can. Please look at the pictures or contact me with any questions.
Performance is outstanding, sharp clear images. Well controlled CA, little distortion, beautiful bokeh, and rich vibrant colors that almost have a 3D punch to them.
Externally the lens, for being 40 years old, is in very good condition. There are two minor issues with brassing. One, with a small dimple/dent near the right side f22 indicator on the aperture scale. One above the 'Made in Japan" label on backside of the lens housing. You can see them in the pictures. I could not locate any damage to the filter ring. It accepts filters and the lens cap without issue.
Internals are fully functional. Focusing is smooth, the aperture ring is normal with no visible oil on the blades. The "green button" manual mode works on Pentax DSLR cameras. Typical of lenses of this age, there is a little dust in the lens, which is illustrated in one of the photographs.
The front lens cap is the correct all black "Asahi Pentax" version. The condition of the cap is fair. There are several dents in the plastic, but it is fully functional as both spring clips work normally. I believe the rear cap is the correct one. It is a standard looking black "Asahi Opt. Co." cap.
Includes:
The lens itself
Front lens cap
An Asahi (perhaps correct) rear cap
A third party leather, or leather type, felt lined soft drawstring storage bag.
All items are pictured.
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Why am I parting with this lens? When I saw if for sale, I had to get it. After using it, my focal length preference is still definitely not 28mm. On my K-5, I prefer 14-20 or 100-135. Turns out, I just wouldn't use it enough to justify it. I don't want it to set in a bag or on a shelf here. My loss is your gain. If 28mm is your thing, you'll be happy with this.
Samples:
(Charlie says Hi!)
Are you the original owner of the item being sold?
No
Are you selling or trading this item?
Selling
Item Condition (Key)
Used
Excellent
Shipping Destinations
United States
Shipping Charge
Free Shipping
Shipping Services
USPS
Accepted Payment Types
PayPal
Return Policy & Additional Details
No Returns
Please send me a private message if interested in the item!
---------- Post added 10-02-17 at 01:42 AM ----------
Pending sale
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Forum: Sold Items
09-29-2017, 01:03 PM
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Forum: General Talk
09-14-2017, 04:02 PM
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I found this at a local reseller of "geek toys" for only $169. What a surprise!
It is in pretty good shape. Very nice externally, all internals work just fine. There are only a very few specs of dust near the outer edge. (Those are reflections in the front view below)
I have only taken a few test pics so far, can't wait to give it a proper test!
 
I have already ordered the proper front cap, thanks to another user, monochrome
Now to track down the rear cap, hood, and that elusive optional hard case...
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Forum: Post Your Photos!
08-22-2017, 10:20 AM
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I saw the total eclipse here in Oregon, but decided to experience it and not document it. I had a great time - without my camera. Thank you for sharing so many wonderful photographs of the eclipse.
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Forum: Pentax SLR Lens Discussion
06-01-2017, 02:10 PM
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Looking at my photos, most of my favorites are in the 16-21mm range. In actual use, I think the 100-135 range is the one I am most comfortable working in. Two answers in one...
(APS-C)
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