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Forum: Pentax SLR Lens Discussion
06-13-2018, 02:18 PM
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I don't think direct sunlight is necessary, plus it could fade the plastics and spoil the rubber.
Humidity is not desirable, because of fungi.
I store them either sitting on the front or on the bottom, best not on a side - or so I've heard - because of how loads are distributed on the lens elements.
Silica gel absorbs humidity but only up to a certain point, then it has to be regenerated. Don't do it in a gas oven, since methane combustion produces water vapor, and you're back where you started...
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Forum: General Photography
06-07-2022, 07:31 AM
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I did not join that early (judging by the lifespan of "modern digital photography", whatever that means), not very active recently, but still an avid Pentax photographer :)
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Forum: Troubleshooting and Beginner Help
06-24-2021, 03:31 AM
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You will get my upvote for the picture, in spite of whom you cited :p
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Forum: Pentax K-3 & K-3 II
06-04-2021, 02:13 PM
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I had a knockoff once (like... 30 years ago): the width was a major PitA, and it was quite less wide than this one! :lol:
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Forum: Pentax K-3 III
06-03-2021, 11:39 AM
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I've just today stumbled upon a paper on the same (?) issue on the K-7:
LumoLabs -- Shutter-induced blur for Pentax K-7
The Layman Summary reads as follows:
"It's not about vibration or a „loose“ image sensor and a massive tripod prevents it."
Of course there's no guarantee that the "issue" on the K-3III is the same & has the same solution.
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Forum: Lens Clubs
06-17-2018, 06:24 AM
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Forum: Pentax Medium Format
04-14-2021, 01:40 AM
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The filter issue looks trivial to me; what doesn't is the fact that it probably originated from a fall or a bang.
Since this one is an all-metal vintage Pentax lens, the chances something went out of place are less than if it were an all-plastic modern thing, still I would check thoroughly to see if something's out of whack.
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Forum: General Photography
03-03-2021, 01:29 PM
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Smartphones usually have QuadBayer arrangements, so the MP in the final picture is much lower than the nominal (advertised) value.
Regarding MP count at large, I find that there has to be a balance between camera MP count, interface/card/mass storage transfer speed, HDD size and cost, CPU processing speed/RAM cost/performance and software speed in general.
All or most of these factors need to be aligned at reasonable values, otherwise the whole Jenga tower collapses.
With 8TB HDD being cheap-ish, PCs being quite powerful, SD cards being big and cheap, many manufacturers implementing USB 3 in their cameras etc. I'm starting to feel like I manage with more than 16 MP per shot :lol: 24-36 looks like my personal sweetspot ATM, but it's largely a personal preference.
After all, if one doesn't print, you can't really have more than ~8 MP on screen at a time :)
For professionals it's another story entirely, obviously.
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Forum: Pentax K-01
01-31-2021, 08:11 AM
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AFAIK the K-01 automatically switches to Playback Mode when an HDMI cable is connected, so there's no live HDMI (let alone clean HDMI output).
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Forum: Pentax K-01
02-04-2021, 12:41 PM
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My K-30 is seeing more use recently, but I still use my K-01 a lot.
And guess what? Six years and almost-a-half later, the infamous "rubber flap" is still good as new.
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Forum: General Photography
01-22-2021, 08:40 AM
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It's all there, isn't it?
You watch a Canaletto painting - which is BTW very relevant on a photography forum since he often used the camera obscura - from a reasonable distance, then you zoom in and notice that everything is done in a very efficient way, with fast lines and dots, without dwelling on a single brush stroke or painting complicated shapes. It almost look like confetti.
The you watch, say, a van Gogh painting and he treats the paint almost like clay, working it in a three-D fashion, pulling it along like custard on top of a cake.
Others, like Turner but definitely not him alone, often used the back of the brush, fingers, fingernails or even their own spit to work the color :lol:
By looking at the "blobs", their shape, their thickness, the speed at which the painter put them on the canvas you can "enter his mind", find out when and where he was having a blast chuckling under his whiskers, when/where he didn't care much or at all, in which order he worked etc. etc. etc.
It's something a normal-res picture can't convey, and one of the reasons one goes to museums in the first place :)
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Forum: Pentax SLR Lens Discussion
01-10-2021, 05:33 AM
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One instance when corner sharpness, distortion and vignetting can be perceived is when you crop an image for framing: if the cropping is asymmetrical, your brain will perceive that resulting asymmetry in the distortion/sharpness/luminance pattern.
Probably the difference is only perceivable with a direct comparison though, and not much of an issue in the real world.
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Forum: General Photography
01-02-2021, 03:41 AM
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Long may your bum reek too! :D:D:D
Happy New Year to you all :)
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Forum: Pentax DSLR Discussion
12-14-2020, 01:55 AM
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Well, shooting a K-01 and a K-30 I'd really like to get those 14 bit in the K-3 RAWs... sometimes I really struggle with the conditions.
Caveat: I'm not into doing art-photography or pretending that I have a "vision" or something... all I care about is bringing home well-crafted and technically sound souvenir photos, so I can remember places I visited, things I did etc.
So often I'm not waiting days for the perfect lighting conditions, the right hour of the day etc... I make do with what I have, that's why I think a wee bit DR more could help.
Looking forward to buying a used K-3 or K-3II (or K-1) as well... :o
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Forum: Photo Critique
12-14-2020, 01:45 AM
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Ditto on the cyan, on reds I've often been fooled because the chromatic aberrations (e.g. on the fence and the head of the squirrel) register as "red(-ish)", but have nothing to do with WB-Tint.
So I'd clean those before going further.
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Forum: Pentax K-3 & K-3 II
12-09-2020, 01:34 AM
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Hi dbs, long time no see!
This thread can't possibly become "doom and gloom" :)
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Forum: Pentax SLR Lens Discussion
12-16-2020, 01:11 AM
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Very nice job, just like your last one :)
GUB
Technically not equally blurred, if they are at the same distance. If the back one is (roughly) two times further than the closest one, then yes :)
pentaxus
Yup, been there, done that :(
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Forum: Lens Clubs
12-16-2020, 01:21 AM
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...a practical and convenient method for telling apart top grain, full grain and "genuine" leather :)
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Forum: General Talk
12-14-2020, 01:57 AM
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The last movement from Bartok's Concerto for Orchestra
You Tube
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src="https://www.youtube.com/embed/dIYUNOBPXL4?controls=1" allowfullscreen>
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Played this a couple of times IRL.
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Forum: Photo Critique
12-14-2020, 01:48 AM
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The image is very creative and nice.
Probably varying the angle ever so slightly would change the position of the lens flare or eliminate it completely... it's a pity because it takes away a lot of contrast. You can try again next summer, I think your idea deserves it :)
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Forum: Pentax K-3 & K-3 II
12-14-2020, 02:04 AM
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Good grief, what do they have inside, pure unobtanium? :eek: I hope your insurance covers at least part of the cost.
Racer, interesting post... the part on "M&M's embezzlement" was especially funny :p customized packaging, really?
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Forum: Pentax K-3 & K-3 II
12-13-2020, 08:43 AM
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No orgies (my SO would be opposed to that, I think), but wine is good :) Perks of living in Tuscany :o
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Forum: Pentax K-3 & K-3 II
12-12-2020, 07:29 AM
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Hey I have that same book as well! :lol: paperback version.
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Forum: General Talk
12-12-2020, 07:11 AM
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Yeah, I know... Sigma rendering can be quite unimaginative at times... esp. with old-ish zooms.
...which I'm not completely opposed to :)
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Forum: Pentax News and Rumors
12-11-2020, 06:00 AM
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This looks like a good thing for what is - to me - one of the more significant shortcomings of DSLRs - a mass of glass moving at breakneck speed inside the case, wreaking havoc on my poor hand-holding skills :eek:
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