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Forum: Pentax K-1 1 Day Ago  
Post your K-1 pictures!
Posted By Digitalis
Replies: 12,484
Views: 1,077,519
Roses in my mothers garden


Pentax K-1 SMCP-K 50mm f/1.2 @ f/2 ISO 100 1/640th
Forum: Pentax SLR Lens Discussion 4 Days Ago  
What's the best Pentax prime?
Posted By Digitalis
Replies: 138
Views: 5,097
yeah, that is a Leica lens I'm happy to miss out on*. I could just smear vaseline on a filter and put it on my Leica APO-Summicron-M 90mm f/2 and basically create the same effect.


*Laugh while you can guys,in a decade or so this lens will probably sell to collectors for an obscene price.
Forum: General Talk 4 Days Ago  
What is the best drill bit? (Sarcasm )
Posted By Digitalis
Replies: 256
Views: 4,709
+1 I love reading about idiotic lab accidents, for some reason I always see them as Dr.Bunsen and Beaker skits. Unintentional disasters are funnier when puppets are involved, running around flailing their puppet arms
Forum: General Talk 4 Days Ago  
What is the best drill bit? (Sarcasm )
Posted By Digitalis
Replies: 256
Views: 4,709
There are plenty of metals that are pyrophoric when reduced to small shavings, what IS important is that the appropriate fire extinguisher to deal with it is nearby. This reminds me of an incident back in a laboratory I worked in years ago, where a undergrad didn't realize the acetone he was using in an experiment wasn't completely anhydrous; there was water in it. So when he put in the sodium metal which promptly exploded and set the acetone ablaze, and splashing it all over the rest of the apparatus - the best thing he could think of was to use the Co2 fire extinguisher. The sudden blast of cold compressed Co2 caused a temperature differential which the glass apparatus couldn't handle, so it simply shattered: spreading sodium chunks, flying glass, and acetone that was heated well beyond his flashpoint all over the place, sparking new conflagrations that were punctuated by the popping of sodium metal still reacting with water.
Forum: Pentax K-1 10-15-2017, 04:33 AM  
My K1 camera's no more reliable then my Nikon/Canon/Fuji cameras were...
Posted By Digitalis
Replies: 20
Views: 1,421
My K10D is still going, apart from some repairs to the grip pins it is working just fine, I got that camera 11 years ago...................yeesh.
Forum: General Talk 10-15-2017, 04:31 AM  
What is the best drill bit? (Sarcasm )
Posted By Digitalis
Replies: 256
Views: 4,709
*chortle*
Forum: Pentax K-1 10-15-2017, 02:11 AM  
My K1 camera's no more reliable then my Nikon/Canon/Fuji cameras were...
Posted By Digitalis
Replies: 20
Views: 1,421
After using the USB connectors on multiple cameras over several years for professional work, I have never had that connector fail on any of them.

I have had USB-C and E-Sata connectors and cables fail on me though.
Forum: Lens Clubs 10-15-2017, 02:03 AM  
The 300mm plus lens Club discuss your long lenses.
Posted By Digitalis
Replies: 26,683
Views: 2,242,048
Thanks, but now that I think upon it, the 16:9 crop version of that image works better. Also removing the Moire from the waters surface helps. This was shot during a sunset, hence the spectacular colours.


Pentax K5IIs - Sigma 100-300mm f/4 APO EX ISO80 f/8 1/640th
Forum: Pentax K-1 10-14-2017, 10:51 PM  
My K1 camera's no more reliable then my Nikon/Canon/Fuji cameras were...
Posted By Digitalis
Replies: 20
Views: 1,421
I rarely remove the cards from my cameras, I typically just use USB to transfer images. At least I never have to worry which card came from what camera.
Forum: Pentax K-1 10-14-2017, 09:07 PM  
My K1 camera's no more reliable then my Nikon/Canon/Fuji cameras were...
Posted By Digitalis
Replies: 20
Views: 1,421
Same here, my primary K1 body developed issues with the rear E-dial, as far as pentax bodies go this is usually the first thing to fail for me. I do a lot of manual exposure bracketing using unusual exposure ratios for blending in post so I can't rely on AEB to get the job done.

Having said that: my Leica M10 needs its rangefinder to be re-calibrated and the sensor cleaned. My Nikon D3s and D5 both need to have their grips re-glued and the mirror boxes and sensors cleaned. My Leica S2 and 645Z cameras have been fine so far.
Forum: Lens Clubs 10-14-2017, 08:59 PM  
The 300mm plus lens Club discuss your long lenses.
Posted By Digitalis
Replies: 26,683
Views: 2,242,048

Pentax K5II - Sigma 100-300mm f/4 APO EX ISO80 f/8 1/640th
Forum: Digital Processing, Software, and Printing 10-14-2017, 06:17 AM  
Windows 10 kept resetting pictures file to photo app
Posted By Digitalis
Replies: 14
Views: 439
I have yet to hear any actively working IT professional say much in the way of praise regarding windows 10. The only thing I have heard is improved security - which is nice to have I suppose, however I wouldn't trust any OS to be 100% secure, troy had decent walls but that didn't save it from the trojan horse.
Forum: General Talk 10-14-2017, 06:10 AM  
What is the best drill bit? (Sarcasm )
Posted By Digitalis
Replies: 256
Views: 4,709
I'm sure that really impresses the ladies..
Forum: Site Suggestions and Help 10-14-2017, 05:51 AM  
Question How can I recover my "Pentaxian" status?
Posted By Digitalis
Replies: 15
Views: 570
Sell that Sony camera and we'll talk*.:lol:

In all seriousness, I think for unpaid members of this site have to maintain a degree of activity to maintain our status as "pentaxians"

* if this was the case I, being brand agnostic, wouldn't attract such a title as Pentaxian.
Forum: Digital Processing, Software, and Printing 10-14-2017, 02:16 AM  
Windows 10 kept resetting pictures file to photo app
Posted By Digitalis
Replies: 14
Views: 439
yes, that is likely the root cause of the issue.
Forum: General Talk 10-13-2017, 11:45 PM  
What is the best drill bit? (Sarcasm )
Posted By Digitalis
Replies: 256
Views: 4,709
This thread is too much...



:lol:

There are people in the adult entertainment industry that could make the same claim.
Forum: Digital Processing, Software, and Printing 10-13-2017, 11:35 PM  
Windows 10 kept resetting pictures file to photo app
Posted By Digitalis
Replies: 14
Views: 439
Windows 10 is well known* for doing this, after a quick search it appears that legacy software can often trigger windows 10 to reconfigure file associations to whatever is the most current app for working with the files..but sometimes even a simple update may not fix the problem.

you may have to dig through the registry apparently:
"Trigger cause: I was able to track down a trigger that causes this to one of my programs. Though I'm not certain that it is the only one that does it as it only causes some associations to change. So more likely it is certain actions that the program causes sets up the first trigger; and another program completes the trigger sequence.


According to procmon, it does some registry snooping with file associations. The second trigger is to open a program that is associated with a file type that often reverts. That second program also snoops at file associations according to procmon.
What I imagine happens is that the first program does something to corrupt the "protection" Windows 10 has for programs changing file associations. Opening the second program causes Windows to re-check its protection and when the hash/progid ends up being invalid, it gets reverted to Microsoft defaults.
For example, I can see an old version of PhotoShop and Firefox doing this. They both look at the key
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.pdf\UserChoice Program 1 messes up the hash/progid somehow, Program 2 which is associated with the type makes Windows re-check it and revert it. I'm a little mystified as to why it's deemed corrupted to begin with because the file association is correct before and after Program 1 does its thing. The association wasn't hijacked, so it didn't need Microsoft's overreach to begin with.


Not all of my systems have the same programs installed, so I'm guessing there may be many esoteric old programs that cause the first trigger event. Aside from my original workaround above, I guess you could be mindful using the offending programs. (shrug) "

*which is why i'm sticking to windows 7 for the time being, at least my file associations have stuck where they belong.
Forum: Digital Processing, Software, and Printing 10-13-2017, 10:44 PM  
Anyone using an Intel NUC?
Posted By Digitalis
Replies: 19
Views: 1,692
so do I...



..A pair of klipsch reference II speakers. Connected to a very good DAC/AMP.
Forum: Pentax SLR Lens Discussion 10-13-2017, 10:28 PM  
What's the best Pentax prime?
Posted By Digitalis
Replies: 138
Views: 5,097
oooh this topic is a casualty trail.



You're right, pictorialism is said to have more in common with impressionism, an impression if the idea is enough - rather than the painstaking and exacting reproduction of the object in question. It is like contrasting Vincent Van Gogh to Albrecht Durer. Consider the characteristics of the DA70mm f/2.4 Vs the Pentax FA77 - both are very different lenses, the DA 70mm, a good lens to be sure don't get me wrong: it is an over corrected design. In contrast the FA77 there is some under correction that gives variety to the images it creates.
Forum: General Photography 10-13-2017, 08:48 PM  
Wim Wenders polaroids, and "why [he thinks] photography is now over"
Posted By Digitalis
Replies: 44
Views: 1,177
Someone who shot Polaroids in the 70's is judging contemporary photography to be dead? how original.

"Today, making a Polaroid is just a process."

Dye transfer printing is a process, Cibachrome,Tintype,Platinotype,Intaglio,Woodcut are all processes used for image making..they still have adherents that use them for their unique properties, not just for the process.
Forum: Digital Processing, Software, and Printing 10-13-2017, 08:30 PM  
What REALLY matters in computer hardware?
Posted By Digitalis
Replies: 46
Views: 2,037
If you want to slap a $100 "maintenance free" AIO cooler on a CPU costing over 1K, go ahead. I reserve the right to cackle when the cooler fails, resulting in your own private Chernobyl. Nothing is ever maintenance free, especially when computers are involved.
Forum: Digital Processing, Software, and Printing 10-13-2017, 08:14 PM  
Anyone using an Intel NUC?
Posted By Digitalis
Replies: 19
Views: 1,692
That degree of noise would be an issue for me, I spent some time perusing some threads that discuss this: the mean average is about 57 dB from directly in front of the Intel NUC, while running system intensive programs. For reference: my water cooled PC runs at 38 dB* when running at full capacity.



*Measured at 1 foot, the 400mm radiator is mounted to the top of my system case, the fans i'm using are noctura 200mm running at 500rpm, I also have some internal 140mm fans cooling hard drives, and of course the PSU has a dedicated 140mm fan. The bigger the fan is: the greater amount of air it can move compared to a smaller, noisier one.
Forum: Photographic Technique 10-13-2017, 05:51 PM  
DSLR Sensor's resistance to Sun shots
Posted By Digitalis
Replies: 15
Views: 673
I have seen Leica cameras with holes burnt in their shutter curtains due to a careless glance to the heavens.
Forum: Pentax SLR Lens Discussion 10-13-2017, 05:36 PM  
What's the best Pentax prime?
Posted By Digitalis
Replies: 138
Views: 5,097
When compiling a list few best lenses in any lens mount, it is best to leave one's preferences on the shelf.




Have you ever heard of the Carl Zeiss 50mm f/1.5 Sonnar? it is a lens with a reputation for being a polarizing element in the Leicaphile* community. It doesn't perform particularly well in MTF testing due to it not having a planar focus field and under-corrected astigmatism - it was designed in 1932, in the age before multi-coatings even existed** and where lens element counts had to be kept to a minimum to control loss of contrast, it is best known as a pictorial lens - not designed to be clinically accurate like the Zeiss Otus lenses.


For contrast, here it the MTF from the Zeiss Planar 50mm f/1.4:



And for a laugh, the Leica APO-Summicron-M 50mm f/2



*Zeissaphile doesn't have the same ring to it.
** Zeiss still makes them for Leica M mount, the uncoated versions are quite popular.
Forum: Photographic Technique 10-13-2017, 06:26 AM  
DSLR Sensor's resistance to Sun shots
Posted By Digitalis
Replies: 15
Views: 673
Terrestrial Sunspot photography, however if one has scientific knowledge of sunspots: you would have an idea of exactly how dangerous recording such a thing would be without protective measures being taken to protect to one's own vision and equipment. A number of manufacturers make Sunspot lens filters that provide adequate protection to photograph the Sun at High noon.

From what I understand we are presently in a solar minimum, there have been several bright prominences but few sunspots.
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