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Forum: Lens Clubs 1 Day Ago  
Takumar club
Posted By jbinpg
Replies: 15,247
Views: 2,639,575
Thanks, Dave. Too bad 150mm falls outside of most people's comfort zone. I find this lens to be remarkably clean and sharp. This image was an attempt to show the lifting stratus cloud over the field. - Jack
Forum: Lens Clubs 2 Days Ago  
Takumar club
Posted By jbinpg
Replies: 15,247
Views: 2,639,575
One from the red-headed Tak stepchild. K1 + Super-Tak 150/4 @ f/11. 8-frame stitch.

Forum: Pentax K-3 4 Days Ago  
FLU Card remote Live View display . . .
Posted By jbinpg
Replies: 11
Views: 304
Check if Composition Adjust is enabled. It needs to be off.
Forum: Pentax DSLR Discussion 6 Days Ago  
Lower spec K1
Posted By jbinpg
Replies: 65
Views: 2,176
Shrink DRAM? You must be kidding. It is one of the Achilles Heels of the K-1. I'm with Norm on this one: I would not sacrifice any of the K-1's functions in the pursuit of cost. I use all it provides.
Forum: Pentax K-1 11-16-2017, 03:27 PM  
Mirror Slap / Shutter Shock on K-1
Posted By jbinpg
Replies: 24
Views: 1,149
As mentioned in the other pertinent threads, some have eliminated 28-105 shutter shock by affixing a battery grip to the bottom of the K-1. Perhaps this is why I have never noticed this since I always shoot with a grip.
Forum: Pentax K-1 11-11-2017, 11:57 PM  
Post your K-1 pictures!
Posted By jbinpg
Replies: 13,164
Views: 1,135,906
Nice reflection shot, Chris. Good to see you trying out other disciplines.
Forum: Pentax K-1 11-08-2017, 12:21 PM  
Shutter release
Posted By jbinpg
Replies: 8
Views: 434
A couple of questions:

- does this happen with all your AF lenses?
- have you turned off all internal filters and corrections?

Turning off in-camera corrections really speeds up the camera.
Forum: Mini-Challenges, Games, and Photo Stories 11-05-2017, 07:56 PM  
Post-Processing Challenge #240
Posted By jbinpg
Replies: 32
Views: 980
A claustrophobic chiarascuro version focusing on the tree.

Forum: Digital Processing, Software, and Printing 11-05-2017, 12:52 PM  
Question for Darktable (under Linux) users
Posted By jbinpg
Replies: 10
Views: 372
Mike - I find the best way to approach an issue is to bring it up on the mailing lists first, especially now since the tracker website seems to be having problems. There are two pertinent mailing lists for darktable: darktable-dev (more for discussing internals) and darktable-user (for everything else). If you haven't subscribed to both yet, I suggest you do so. Gives you a good feel for dt's progress and where the developers' focus is at the moment. Details on how to subscribe can be found by either a quick google or at the project website.

Jack
Forum: Digital Processing, Software, and Printing 11-04-2017, 07:53 PM  
Question for Darktable (under Linux) users
Posted By jbinpg
Replies: 10
Views: 372
Hi, Mike. You aren't the first to ask this question. In fact, there is a feature request for a manual lens correction module in the darktable redmine system already (#9087).

https://redmine.darktable.org/issues/9087

Unfortunately, redmine is down at the moment for some reason so I am unable to check the status of this request. I remember about 5 years ago, darktable did have a manual lens correction module. But they decided to borrow code for automatic lens correction (from the rawtherapee project, I believe). This was easier for the developers since the new module depended on outside 3rd party libraries to provide the internals (specifically, exiv2 for lens ID recognition and liblensfun for the corrections) and they were freed from its maintenance costs.

However, I think even the developers know that the ongoing delay between getting new or old lenses into the outside libraries makes users grouchy for knobs they can twist themselves. So I wouldn't be surprised if such a module either reappeared or the current automatic module sprouted some better manual overrides.

Jack
Forum: Pentax SLR Lens Discussion 11-02-2017, 06:01 PM  
The Bokeh Club
Posted By jbinpg
Replies: 10,433
Views: 1,028,038
K-1 + Super-Tak 55/1.8 @ f/5.6

Forum: Digital Processing, Software, and Printing 10-31-2017, 08:35 PM  
Fun and confusion with colour spaces - RAW vs. output JPEGs (yellows especially!)
Posted By jbinpg
Replies: 10
Views: 550
Anybody going down the rabbit hole of colour management with their digital photography should have this link bookmarked:

Color Management: Color Space Conversion

And here is another link with some intelligent discussion on the matter:

https://discuss.pixls.us/t/how-to-cope-with-colours-going-out-of-gamut/3320/9

It is not as straight forward as one would wish.

Jack
Forum: Digital Processing, Software, and Printing 10-29-2017, 10:28 PM  
Fun and confusion with colour spaces - RAW vs. output JPEGs (yellows especially!)
Posted By jbinpg
Replies: 10
Views: 550
Mike - I assume you have read the Section 3.2.10. on color management in the dt docs (link below):

3.2.10.Color management | user manual | darktable

Note that you only get some of the rendering options if you toggle on the “always use LittleCMS 2 to apply output color profile” option in the core options.

Jack
Forum: Digital Processing, Software, and Printing 10-28-2017, 06:26 PM  
Fun and confusion with colour spaces - RAW vs. output JPEGs (yellows especially!)
Posted By jbinpg
Replies: 10
Views: 550
What does running "darktable-cmctest" show you?
Forum: Digital Processing, Software, and Printing 10-28-2017, 04:24 PM  
Fun and confusion with colour spaces - RAW vs. output JPEGs (yellows especially!)
Posted By jbinpg
Replies: 10
Views: 550
Mike - Check out the discussion of this bug report on colour profile management in darktable. The input of the dt developer here is useful, methinks.

Bug #9596: Soft proofing seems not to work as expected - darktable - darktable - photography workflow application

Jack
Forum: Digital Processing, Software, and Printing 10-28-2017, 01:40 PM  
Darktable 2.0.7 under Linux Mint 18.2... a great Lightroom alternative
Posted By jbinpg
Replies: 28
Views: 1,087
Check out the link and judge for yourself.
Forum: Digital Processing, Software, and Printing 10-25-2017, 04:46 PM  
Darktable 2.0.7 under Linux Mint 18.2... a great Lightroom alternative
Posted By jbinpg
Replies: 28
Views: 1,087
Matt - Many linux togs swear by Rapid Photo Downloader for their photo transfers. Check it out here:

Rapid Photo Downloader: Documentation

Maybe enough to persuade you to install a real linux box?

Jack
Forum: Digital Processing, Software, and Printing 10-25-2017, 12:11 PM  
Darktable 2.0.7 under Linux Mint 18.2... a great Lightroom alternative
Posted By jbinpg
Replies: 28
Views: 1,087
v2.o.x is very old. Latest version is v2.2.5 and is much more capable. New version is due before the end of December.
Forum: Pentax SLR Lens Discussion 10-21-2017, 02:32 PM  
The Bokeh Club
Posted By jbinpg
Replies: 10,433
Views: 1,028,038
Super-Tak 55/1.8 @ f/4

Forum: Mini-Challenges, Games, and Photo Stories 10-14-2017, 06:23 PM  
Thematic Post your Telephoto Landscapes!
Posted By jbinpg
Replies: 162
Views: 10,718
In the same vein as Greg's latest contribution. Too cloudy for awesome shots of Lake Louise in Banff National Park the other day so took one of the east face of Fairview Mountain to the south of the lake. DA*300 + HD DA 1.4 RC.


Forum: Lens Clubs 10-11-2017, 10:49 PM  
Takumar club
Posted By jbinpg
Replies: 15,247
Views: 2,639,575
Athabasca Falls, Jasper National Park, Canada. Oct 11, 2017. 3-frame panorama. K-1 + Super-Takumar 55/1.8 @ f/16.


Forum: Pentax SLR Lens Discussion 10-09-2017, 02:33 PM  
Pentax-D FA 24-70 2.8 back focus issues
Posted By jbinpg
Replies: 5
Views: 438
I believe others have had the best result sending in both lens and camera together so they can be calibrated as a unit.
Forum: Digital Processing, Software, and Printing 10-08-2017, 03:15 PM  
What REALLY matters in computer hardware?
Posted By jbinpg
Replies: 47
Views: 2,592
Check out this linux performance comparison between Ryzen and I7. Software written to take advantage of Ryzen's multicore threading do very well. Not so much in single-threaded apps. Same situation across all operating systems.

AMD Ryzen 7 1800X vs. Intel Core i7 7700K Linux Gaming Performance Review - Phoronix
Forum: Digital Processing, Software, and Printing 10-05-2017, 08:09 PM  
Darktable for Windows Alpha
Posted By jbinpg
Replies: 11
Views: 977
All newbies to darktable should start here:

tutorial | darktable

There is no substitute for loading up an image and getting your hands dirty. Darktable's noise reduction is excellent once you get a handle on it.
Forum: Pentax SLR Lens Discussion 10-05-2017, 02:15 PM  
The Bokeh Club
Posted By jbinpg
Replies: 10,433
Views: 1,028,038
Autumn raspberry. K-1+STak 55/1.8 wide open.

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