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Forum: General Photography 02-11-2020, 04:01 PM  
What are your DSLR dealbreakers?
Posted By cpk
Replies: 161
Views: 3,615
I know of a camera store back then which would not carry Canon for that very reason. They do now, but the original owner is no longer there.
Forum: Pentax SLR Lens Discussion 02-11-2020, 07:28 AM  
Question about the 18-135 WR
Posted By cpk
Replies: 5
Views: 545
The idea of the hood door appears to be a good one, but I have found it more trouble than it's worth. It's awkward to use if you are hand-holding the camera; and if you take it off and leave it off, you can get light leaks, especially if holding the camera vertically. I simply slip my finger inside the edge of the hood to rotate the polarizer.
Forum: Pentax Camera and Field Accessories 02-06-2020, 05:31 PM  
Infrared Filters still used?
Posted By cpk
Replies: 35
Views: 877
I don't know if those are real hot spots. Here's my example:
Forum: Pentax Camera and Field Accessories 02-03-2020, 06:14 PM  
Infrared Filters still used?
Posted By cpk
Replies: 35
Views: 877
My K-7 was converted to 665nm because I wanted to do false colour IR. These can be converted to black and white IR in post-processing; but the purest B&W IR, however, is done with an 850nm filter which would improve image contrast. I can attain this by using a strong red IR filter, but would lose the false colour capabilities. As it is, my K-7 can be hand held but might need a tripod with the addition of an IR filter.

Some samples (which have been posted previously elsewhere in this forum): Barns in the County, Series 3
Forum: Pentax K-1 01-31-2020, 07:45 PM  
How bad of a thing is mirror flap?
Posted By cpk
Replies: 13
Views: 617
Me too through several cell phones and my Pentax batteries, until I read that Samsung website after getting my latest cell phone over a year ago.

Correction: Only in respect to my cell phone. This thread is making me realize that I should be thinking of my Pentax batteries as well. One positive aspect to this is that if you change batteries at half power, there is less risk of going dry when you need the power. It has happened to me, especially in the cold weather.
Forum: Pentax K-1 01-30-2020, 11:42 AM  
How bad of a thing is mirror flap?
Posted By cpk
Replies: 13
Views: 617
From a Samsung site on charging their phone batteries (but also applicable to other lithium-ion batteries):

"To get the most out of your smartphone's battery, you'll need to charge it properly.

"Most Smartphones have a lithium-ion battery that lives longer when charged regularly. Unlike the nickel batteries used in older phones, lithium-ion batteries do best when kept above a 50 percent charge. Repeatedly allowing the battery to drain fully may shorten its life and decrease its overall capacity.

"If this happens, you'll need to charge the battery more frequently and it may last only a few hours before needing a charge, for example.

"Leaving the phone connected to the charger (when the phone is completely charged) while you are using it may lower battery life if you do it repeatedly."
Forum: Digital Processing, Software, and Printing 01-03-2020, 02:35 PM  
ISO good monitor calibration device/system
Posted By cpk
Replies: 23
Views: 1,020
I had to look up thrips to find what they are. I'll stick to mosquitoes and black flies which we have in abundance over here, although they are seasonal. And, so far as I know, they don't crawl into monitors. You have my sympathy.
Forum: Digital Processing, Software, and Printing 01-03-2020, 06:03 AM  
ISO good monitor calibration device/system
Posted By cpk
Replies: 23
Views: 1,020
My LaCie monitor has a small internal fan which failed on me over two years ago, giving a temperature control message across the screen that I originally thought related to my desktop. I found a replacement fan online which took several months to arrive; and when it did it had the wrong connector, so I had to splice the original connector's very small wires to the new fan. That lasted about a year and a half before the message started to appear again. I have now removed the rear plastic backing on my monitor and have a small desktop fan bouncing air off the wall towards the now-naked rear metal housing of the monitor. Very makeshift, but the temperature control message has not appeared since.

My supplier years ago told me the LaCie monitors were rebadged, and I think it was NEC but can't be sure. He dealt heavily in LaCie products, being just down the street from their Canadian headquarters. And at good prices too. When Seagate took over LaCie, their monitors (and service) disappeared from the market. I looked at replacing my LaCie monitor; but as I am now on pension, it will have to wait a while. The present setup is working.
Forum: Digital Processing, Software, and Printing 01-02-2020, 08:15 AM  
ISO good monitor calibration device/system
Posted By cpk
Replies: 23
Views: 1,020
Your comment makes sense; but when I bought my LaCie monitor, I also purchased their Blue Eye colourimeter with its software. I could never get it to work properly, even with LacCie's technical support (the Canadian company had to go to France to get help). The Blue Eye software also supported the Spyder3 colourimeter, but I couldn't get that to work either. I gave up on it and stuck to the Spyder3 hardware and software.

I kept the Blue Eye colourimeter around for all these years; and when I was trying out DisplayCal, I searched through about 25 storage boxes for it in the hopes that it would do a better job with DisplayCal than the Spyder3. It was only after two such searches that I had the vague memory of disposing of it with other unused hardware a few months ago. A pity.
Forum: Digital Processing, Software, and Printing 12-31-2019, 05:46 AM  
ISO good monitor calibration device/system
Posted By cpk
Replies: 23
Views: 1,020
Thanks for the information. My issues may tie in with the age of my monitor as well. It may be that my creaky old monitor along with a creaky old colourimeter and creaky old software just work in my situation. DisplayCal produced good colours except for the light greys which took on a greenish-yellow tinge.

For now my setup works for me, but I will explore a colourimeter and software upgrade.
Forum: Digital Processing, Software, and Printing 12-29-2019, 05:59 PM  
ISO good monitor calibration device/system
Posted By cpk
Replies: 23
Views: 1,020
I followed your advice for about three days.

I'm working on a LaCie 724 wide gamut monitor using Spyder3 software and colourimeter to calibrate it. Both the monitor and the Spyder3 are 10 or more years old. I was always happy with the results from the Spyder3 and its software but thought that DisplayCAL sounded so much better (from reading this thread); so I tried it. I had looked at DisplayCAL 1 1/2 years ago but don't remember doing anything with it other than downloading it. This time I went all the way; but every time I used DisplayCAL (5 or 6 different calibrations) I got a slight greenish-yellow cast on a light grey colouring. The closest I got to a neutral grey occurred when I introduced a correction for a wide-gamut S-PVA monitor (which mine is); but still the slight greenish-yellow cast.

A few hours ago I removed all the DisplayCAL and ArgyllCMS software and reinstalled the Datacolor software. After a recalibration I was back to the colouring I expected. There is no question that the DisplayCAL software appears to do a more thorough job of calibration in terms of the actions it takes, but in the end are the results any better? In my case definitely not; for others it depends.
Forum: Pentax K-3 12-20-2019, 07:04 PM  
K3 and IR
Posted By cpk
Replies: 8
Views: 603
That's what I do with my IR-converted K-7. I've probably only done it about ten times in the 5 1/2 years since I converted the camera. It's not something that I have had to worry about. If you are using Lightroom to process your IR images, white balance can be a problem because the colour temperature sliders are skewed for IR photos, making adjustments very difficult. This may also apply to other software. I go from Lightroom to DxO PhotoLab (previously OpticsPro) and then back to Lightroom, at which point my colour temperature sliders are centred, so i don't have an issue here.

If this is your problem (or part of it) check out the following video:














You Tube




Some samples of my K-7 work: Barns in the County, Series 3 - Charles Kinghorn

Added: My K-7 was converted to IR by Kolari Vision for 665nm as I recall.
Forum: Digital Processing, Software, and Printing 12-11-2019, 05:05 PM  
Choosing Adobe Photography 20GB or Lightroom 1TB plan?
Posted By cpk
Replies: 18
Views: 824
I have the Adobe plan giving me desktop-based Lightroom Classic, cloud-based Lightroom, Photoshop, and 20GB of cloud storage for 9.99 USD (11.49 USD or 15.64 CAD with Canadian sales taxes added). This enables me to process photographs on my desktop, an Android phone, and two Android tablets. So, if I'm on a train or bus or having coffee in some coffee shop or some other place, I can be editing my photographs in Lightroom. To use the cloud storage I only have to use collections and indicate for each collection that it is to be synced with the cloud. Currently I have 20 such synced collections containing about 9500 photos. The total space in the cloud for these collections is 736.1MB. I have a long way to go before I run out of the 20GB I have with my plan.

I have thought it would be nice to have terabytes of cloud storage and to put all my photos up there. The cost stops me as I am now pushing two terabytes of photographic storage and have moved to 4TB hard drives for the future. I also need Lightroom Classic for what it can do that the cloud-based Lightroom can't do right now. I also need Photoshop occasionally.

Added: Plus I am using DxO Photolab 3 which would complicate my keeping all my photos on the cloud as it is a desktop-based application.
Forum: Digital Processing, Software, and Printing 12-02-2019, 03:28 PM  
Lightroom Features
Posted By cpk
Replies: 18
Views: 1,021
One reason LR may appear to be slow in Develop mode is that with the nondestructive editing it has to apply all your changes to an image each time you open it. I have had a few images where I have been doing so much work on them that my system seems to lock up as I continue editing. In those cases I have exported them as tiffs and re-imported them to continue work on the new version. More RAM and a faster CPU would improve the situation.
Forum: Pentax Film SLR Discussion 11-25-2019, 05:18 PM  
Article link: IMPERFECT, BUT POCKETABLE
Posted By cpk
Replies: 22
Views: 1,241
I bought the 40 mm 2.8 film lens a few years ago to use with my film cameras. I have the 40 mm DA Limited lens which is one of my favourite street lenses, but of course its field of view on an APSC digital camera is different from the original 40 mm lens on a film camera.

I agree that the 40 mm film lens is a good match for the MX in terms of size, but I use it on the street on my LX. Why? With the LX I can zone focus the lens and allow the camera to set the shutter speed for the f-stop I have set for the zone focusing. This way I don't have to worry about changing lighting conditions as I walk down the street. On the MX I could be continually resetting the shutter speed as the light changes.
Forum: Monthly Photo Contests 11-09-2019, 04:13 PM  
If Walls Could Talk
Posted By cpk
Replies: 4
Views: 75
I would like to nominate this photo
Forum: Monthly Photo Contests 11-09-2019, 04:11 PM  
Wolf
Posted By cpk
Replies: 3
Views: 86
I would like to nominate this photo
Forum: Monthly Photo Contests 11-09-2019, 04:09 PM  
Christ crowned, Tzintzuntzan, 16th Century.
Posted By cpk
Replies: 6
Views: 165
I would like to nominate this photo
Forum: Monthly Photo Contests 11-09-2019, 04:05 PM  
In memory of Daphne 1999-2016
Posted By cpk
Replies: 2
Views: 91
I would like to nominate this photo
Forum: Monthly Photo Contests 11-09-2019, 04:04 PM  
Four wise men
Posted By cpk
Replies: 21
Views: 417
I would like to nominate this photo
Forum: Monthly Photo Contests 11-09-2019, 03:55 PM  
Rwandan Child
Posted By cpk
Replies: 6
Views: 72
I would like to nominate this photo
Forum: Monthly Photo Contests 11-09-2019, 03:55 PM  
Autumn spire
Posted By cpk
Replies: 24
Views: 424
I would like to nominate this photo
Forum: Monthly Photo Contests 11-09-2019, 05:19 AM  
Snowy Bridge
Posted By cpk
Replies: 18
Views: 251
I would like to nominate this photo
Forum: Monthly Photo Contests 11-09-2019, 05:18 AM  
first picture submission
Posted By cpk
Replies: 19
Views: 507
I would like to nominate this photo
Forum: Digital Processing, Software, and Printing 10-30-2019, 04:56 AM  
DxO Sale and a question
Posted By cpk
Replies: 46
Views: 2,660
I photograph a lot of buildings. I find that the automatic correction of verticals and horizontals (where applicable) quite sufficient about 75-80% of the time with no further work required.



Where more than one building is involved, the left vertical line is attached to the left side of the leftmost building in the photograph and the right vertical line is attached to the right side of the rightmost building. All the buildings in the photograph are then corrected.

The ViewPoint software was an immediate purchase for me the moment I saw what it could do, even before I purchased DxO OpticsPro. I used it as a plugin with Lightroom. It can even be used a a standalone program on jpegs and tiffs. I have found no other software to be as easy to use for perspective correction.
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