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Forum: Pentax DSLR Discussion 10-07-2018, 04:16 AM  
Considering Full-spectrum Conversion
Posted By Barry Pearson
Replies: 6
Views: 586
As a result of this thread, I'm considering having my K-3 (superseded by my K-3ii) converted for Full Spectrum. Being superseded, I will not want to use it for visible-light photography.

I have a Hoya Infrared R72 which would appear to be useful on such a camera for IR photography.

But what filters would be useful for UV photography?

The B+W 77mm UV Black (403) Filter has been discontinued.
Forum: Digital Processing, Software, and Printing 10-06-2018, 03:20 AM  
Cloud backup for raw files
Posted By Barry Pearson
Replies: 11
Views: 502

It can be synchronised into Lightroom Classic CC, or its desktop-oriented predecessors such as Lightroom 6.

And it is a fundamental feature of Lightroom CC, the newer cloud-based variant of Lightroom.
Forum: Digital Processing, Software, and Printing 10-06-2018, 12:31 AM  
Using Exiftool and Excel to analyse my images
Posted By Barry Pearson
Replies: 5
Views: 336
That is what I use - a lot!

I like it because it doesn't simply provide the numbers. It displays a grid of the photos concerned.
Forum: Digital Processing, Software, and Printing 10-05-2018, 03:14 AM  
PEF & Lightroom - HELP
Posted By Barry Pearson
Replies: 6
Views: 349
It will recognise PEFs for cameras released until Adobe stopped updating Lightroom 6.

PEFs have an overall consistent specification, but have detailed differences from one camera to another.

The specification for DNG rarely changes, because of its large amount of metadata which can cater for a huge range of detailed differences. Lightroom 6 recognises DNGs from all current Pentax cameras, and in fact recognises even later versions of DNG that haven't been used by Pentax cameras yet. (With the qualification that it hasn't caught up with pixel-shift technology yet).
Forum: Digital Processing, Software, and Printing 10-05-2018, 12:50 AM  
PEF & Lightroom - HELP
Posted By Barry Pearson
Replies: 6
Views: 349
It isn't too late!

Download and install Lightroom 6 (Single App license)

"Last Published: June 27, 2018"
Forum: Pentax SLR Lens Discussion 09-28-2018, 05:06 AM  
24-70 alternative lens for K1
Posted By Barry Pearson
Replies: 43
Views: 1,609
You say you have noted the 28-105mm kit lens. What were you conclusions?

It isn't limited in image quality to what used to be called a "kit lens". It is very good indeed across the frame and at all settings. Often it is the only lens I use all day on my K-1-series, and I read of others who think the same.
Forum: Pentax DSLR Discussion 09-26-2018, 08:02 AM  
Bought K-1 II, Sold K-3 ii--have DA lenses--buy used APS-C as back-up?
Posted By Barry Pearson
Replies: 19
Views: 1,021
Hm! I use my K-3ii as my back-up for my K-1ii.

You appear to have ruled that out.
Forum: Troubleshooting and Beginner Help 09-13-2018, 11:22 PM  
Crop mode on K-1
Posted By Barry Pearson
Replies: 37
Views: 1,229
Others have answer your basic question. I'll add something that I haven't spotted here.

The K-1-series also has "Square" crop mode. About 24 MP. All it really gives you is a visual indication in the viewfinder, which some people may find useful, while others don't.

I discussed it at the DPReview thread below. (Including how to recover images back to 36 MP in Lightroom).

Revisiting SQUARE crop on K-1-series
Forum: Photographic Industry and Professionals 09-06-2018, 12:27 AM  
So glad Pentax isn't making a mirrorless now!
Posted By Barry Pearson
Replies: 69
Views: 3,072
I haven't gone away!

I have all the recent Pentax FF lenses, and with the right Pentax mirrorless camera, plus the K-mount adapter that Pentax would supply (unless they had a death-wish), I would buy such a camera.

(It would co-exist with my K-1ii, hopefully complementing it rather than competing with it or replacing it).
Forum: Troubleshooting and Beginner Help 09-04-2018, 11:39 PM  
Correcting a shot that isn't level.
Posted By Barry Pearson
Replies: 18
Views: 876
When I'm cropping in Lightroom (Classic CC), I often also use the "Transform" panel in the Develop module.

The transformations can be done while the crop rectangle is still visible. This means some quite tricky alignment and perspective problems can be mitigated.

So I might (for example) make two or more of the things that are vertical in real life vertical and parallel in the image. A building and a lamp-post, for example.

(If I'm ambitious, I might vary the horizontals as well! But that can introduce some unwanted distortions).
Forum: Pentax Full Frame 09-03-2018, 05:54 AM  
Is Pentax in the need of a M/L system?
Posted By Barry Pearson
Replies: 121
Views: 3,709
The adapter would be a way of saving me lots of money if I decide I could benefit from such a camera from Ricoh/Pentax.

It would be an optional purchase that I would want to make.
Forum: Pentax Full Frame 09-03-2018, 03:19 AM  
Is Pentax in the need of a M/L system?
Posted By Barry Pearson
Replies: 121
Views: 3,709
I responded to establish the fact that introducing a new mount and system does not have to risk losing existing users of that maker's cameras and lenses.

Neither of us is able to say what proportion of existing Nikon (or Canon) users will buy their adapters.

Perhaps we will see some statistics in (say) a year or so.

(I have a Q System with 2 cameras, 4 lenses, and the K-mount to Q-mount adapter. If Pentax released a new mount suitable for larger sensors such as FF, and I found one or more of the new mirrorless cameras was good for me, I would buy such an adapter).
Forum: Pentax Full Frame 09-03-2018, 12:21 AM  
Is Pentax in the need of a M/L system?
Posted By Barry Pearson
Replies: 121
Views: 3,709
The new Canon and Nikon mirrorless systems have (apparently fully functional) adapters to mount their existing SLR lenses. A user only needs to buy 1 adapter.

This means that these new cameras can be used a stand-alone new cameras, or as complements to existing cameras from those companies. Both the companies and their users can make the transition at their own pace. If users even choose to make the transition at all.

If Ricoh/Pentax provided a mirrorless mount & cameras, I would expect them to provide a suitable adapter. (If they didn't, they would indeed alienate existing users).
Forum: General Photography 08-14-2018, 07:30 PM  
How to take photo's for wide resolution? (e.g 3:1)
Posted By Barry Pearson
Replies: 8
Views: 508
Those images are tiny compared with the number of pixels in any Pentax camera.

It is possible to (say) take a photo where the subject only fills about a quarter of the frame, then crop in post-processing and downsize dramatically to those image sizes, with results that should be very sharp if the image was captured properly.

If the image is captured, with plenty of cropping space, as well as any Pentax camera can do, this sounds like a problem in post-processing.

But ... trying to use an 851 x 315 image as a banner will look bad on any decent sized screen. For example, the screen I'm using at the moment is 2560 pixels wide. If the image gets upsized to fit, it will look unsharp.
Forum: Pentax DSLR Discussion 08-11-2018, 02:22 AM  
I had a dream.
Posted By Barry Pearson
Replies: 21
Views: 980
The K-1-series D-BG6 has strap lugs.
Forum: Pentax News and Rumors 08-10-2018, 09:13 AM  
DPReview manages to do a negative review of the DFA*50
Posted By Barry Pearson
Replies: 265
Views: 13,773
See my post "A problem with the article's analysis".

My conclusion was: "I increased the "Exposure" in Lightroom, to see what colour the wire mesh is. See the result below. It is dark greenish. The main component of the green fringe around the wire mesh is out-of-focus subject, (a mixture of the mesh and the bright background), not a lens aberration".

See my post in the same thread "From Sigma 85mm F1.4 DG HSM Art for Sony E-mount sample gallery".

My question was "Is it my imagination, or is there significant green and purple fringing around the woman's jacket and especially around her left hand and the cords hanging down? The Adobe lens profile for this lens in Lightroom doesn't fix it."

I haven't examined photos from the Sigma Art 50mm, just the Sigma Art 85mm.
Forum: Pentax News and Rumors 08-10-2018, 01:57 AM  
DPReview manages to do a negative review of the DFA*50
Posted By Barry Pearson
Replies: 265
Views: 13,773
Much of the so-called green CA is out-of-focus dark-green fence!

A problem with the article's analysis
Forum: Pentax SLR Lens Discussion 08-01-2018, 11:33 PM  
Filters for Pentax 15-30mm lens
Posted By Barry Pearson
Replies: 7
Views: 589
I agree. I have that system for my D FA 15-30mm f/2.8.

I have the circular polariser and ND16 round filters.

I also have the Fotodiox adapter for rectangular filters such as grads, but I'm not using it at the moment because I think taking bracketed exposures then merging later may be better.

WonderPana Filter Holder for Tamron 15-30mm SP F/2.8 Di VC USD ? Fotodiox, Inc. USA

The key to the system is the 2-part clamp, with a part with a red-ring that fits from the back of the lens, and the front part that screws into that which takes the filters and adapter.
Forum: Pentax DSLR Discussion 07-30-2018, 01:40 AM  
Shutter Count and K-1 Upgrade
Posted By Barry Pearson
Replies: 11
Views: 603
My upgrade from K-1 to K-1ii reset the shutter count.
Forum: Pentax Mirrorless Cameras 07-28-2018, 01:53 AM  
Rebuilding the mirrorless
Posted By Barry Pearson
Replies: 80
Views: 2,960
You are perfectly correct, of course!

The fact that other companies with vastly more lens-development resource than Ricoh/Pentax use new mounts doesn't mean that Ricoh/Pentax has to do the same thing.

"Mirrorless" and "new mount" are largely independent concepts. Pentax could release an SLR with a mount other than K-mount. (As they did with 645Z). Or they could release a mirrorless camera with a K-mount. (As they did with K-01).
Forum: Digital Processing, Software, and Printing 07-27-2018, 11:21 AM  
Lightroom CC vs Lightroom Classic CC... Help?
Posted By Barry Pearson
Replies: 12
Views: 544
Adobe products: desktop, web, and mobile applications | Adobe

If it doesn't support the raw files of your camera, you can use the free DNG Converter.

Personally, I'm happy with my CC subscription. Lightroom is so valuable to me that I want to keep it up-to-date. I'm "an advanced amateur".

I've been experimenting with the new Lightroom CC. I don't believe it is yet viable for (my) serious use, especially if bandwidth is limited, because it holds everything on "the cloud".
Forum: Pentax Mirrorless Cameras 07-27-2018, 12:12 AM  
Rebuilding the mirrorless
Posted By Barry Pearson
Replies: 80
Views: 2,960
When Pentax released the K-1, they already (or soon after) had about 15 officially-FF lenses in their current catalogue, and another has since arrived.
Also, a number of other companies have FF K-mount lenses in their current catalogues for where Pentax has gaps in their range.

People complain about the current restricted range of FF lenses, and the slowness of the introduction of new lenses.

Now think about a new camera with a new mount. Given the experience with "only" having the above lenses for the K-1-series, how many lenses would be needed to be credible to potential buyers of a new camera? I'm sure most people would be discouraged, or choose to "wait and see". So the camera wouldn't sell in anywhere near the volumes that it would with a good range of lenses. So it would be judged to have been a failure.
Forum: Digital Processing, Software, and Printing 07-26-2018, 12:20 AM  
Another Photo Software Thread (re: ecosystem decision)
Posted By Barry Pearson
Replies: 18
Views: 817
My view is that when I take a photo, the 3 main components are: camera; lens; Lightroom.

Every shot I take (tens of thousands a year) goes through Lightroom. It is how I cull them. (Most of them are captured in burst-mode, in the knowledge that most will have to be culled).

Every shot that is worth using is developed, to a greater or lesser extent, in the Lightroom Develop module. (Even if I'll use Photoshop later).

Appropriate use of the Develop module can make my cameras and lenses appear more expensive than they were. For example, lens profiles; noise-reduction; sharpness.

My Lightroom catalogue now over 140,000 photos, including imported scans of photos taken 55 years ago. Lightroom enables me to find them!

I'm retired and I deliberately don't attempt to make money from photography. It is my main hobby, and I want the best possible results as easily as possible.
Forum: Pentax SLR Lens Discussion 07-22-2018, 01:00 AM  
Please, knock me off the fence. (yes, another 15-30)
Posted By Barry Pearson
Replies: 33
Views: 1,827
I use the D FA 15-30mm f/2.8 for the sort of things you mention. (On a K-1ii). And it works well, at a considerable weight and price. But ....

I often find I need something a bit wider. So when I have the 15-30mm with me, I'll probably also have the Venus Optics Laowa 12mm f/2.8 "Zero D" for the (say) 10% of cases where I need something wider. Interiors, exteriors (gardens, etc), landscapes.
Forum: Pentax SLR Lens Discussion 07-18-2018, 08:11 AM  
Why would somebody buy the DFA28-105?
Posted By Barry Pearson
Replies: 104
Views: 3,685
To be pedantic: "there are no Pentax modern fast primes for Pentax apart from the soon to be released 50 1.4."


I (somewhat reluctantly) bought the Laowa 12mm f/2.8 Zero-D and the Samyang 12mm f/2.8 Fisheye. Some may say they are not really "fast". I would claim that they are "fast", since they don't need much stopping down to be useful.
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