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Forum: General Photography 10-04-2018, 01:11 PM  
Low-Quality Journalism
Posted By Scintilla
Replies: 23
Views: 1,021
I don't know about NY Comic-Con specifically, but the fandom convention I staff at already does all that (though obviously if they want to run an article on Day 0 then the only photos that will be available yet will be from prior years' events) and has a department dedicated to press relations, and we're nowhere near the size of NYCC. I'm pretty sure it's standard practice.


But as far as I've seen, it doesn't stop the various press outlets in attendance from writing their own takes with their own photos.
Forum: Pentax SLR Lens Discussion 09-28-2018, 08:26 AM  
24-70 alternative lens for K1
Posted By Scintilla
Replies: 43
Views: 2,020
Having used the Tamron 28-75/2.8 (A09) on a Canon 5D (12 MP 36x24, so not a very demanding sensor at all), I can say that it's relatively small and light (takes only 67mm filters, unlike seemingly all the other f/2.8 zooms), but I don't like how mine renders smeary by the edges (though that may not be an issue for portraits or even street?) and have pretty much stopped using it.
I haven't used any of the others, but I have to believe the DFA 28-105 would be clearly superior to the Tamron even if you don't need the extra reach.
Forum: Pentax News and Rumors 09-19-2018, 06:55 AM  
K-1 II upgrade program extended in Canada due to unexpectedly high demand
Posted By Scintilla
Replies: 36
Views: 2,262
Or if you already do eat Kraft Dinner, then make that "as long as you won't have to forgo the expensive ketchup".
Forum: Pentax Forums Giveaways 09-02-2018, 03:00 PM  
August Pentax K-1 II Giveaway: Raffle Thread 3, 22:00 UTC, September 2, 2018
Posted By Scintilla
Replies: 38
Views: 1,625
I can't believe I forgot about the first two threads...! Still a chance!
Forum: Pentax News and Rumors 08-30-2018, 01:04 PM  
K3ii replacement
Posted By Scintilla
Replies: 2,452
Views: 158,450
Because it's less stable and/or comfortable to hold the camera at arm's length all the time.
Forum: General Photography 08-29-2018, 02:13 PM  
"I had a dream." What determines the base ISO of a digital sensor?
Posted By Scintilla
Replies: 67
Views: 1,403
Thanks for the explanation -- goes a long way to pulling this thread back towards answering the OP's question, and this one paragraph is a nice effective summary.
Forum: General Photography 08-29-2018, 02:08 PM  
"I had a dream." What determines the base ISO of a digital sensor?
Posted By Scintilla
Replies: 67
Views: 1,403
That's what I was getting at. Assuming that bracketing is not an option for whatever reason, if you know your camera is ISO-invariant, you can get away with that in a single shot. If the camera isn't, then you have to pick either protecting the highlights (low ISO and push) or less noise (high ISO). That's all there is to it.
Forum: General Photography 08-29-2018, 12:07 PM  
"I had a dream." What determines the base ISO of a digital sensor?
Posted By Scintilla
Replies: 67
Views: 1,403
Norm -- You seem to be coming at this from the angle of there being no advantage to shooting ISO 400 instead of ISO 100 pushed 2 stops. But no discussion of ISO invariance I've seen has ever argued otherwise.


Rather, the value of ISO invariance is supposed to be in being able to shoot at the lower ISOs and push without any noise penalty, so that you can retain any highlights that might have been lost (in the raw and not just the JPEG, because the ISO setting is (in most cameras?) effected via an analog gain stage) at higher ISOs.
This might not matter much to you or me shooting sunsets, where the highlights are critical and shadow detail is a nice-to-have. But I imagine this would be important to people shooting night scenes where much of the detail is in the shadows, so shadows are critical and unclipped highlights are a nice-to-have. Or maybe astrophotography?
Forum: Pentax SLR Lens Discussion 08-29-2018, 08:49 AM  
Portrait lens for a cheap price!
Posted By Scintilla
Replies: 64
Views: 1,853
Minor historical note -- Carl Zeiss Jena is actually what was left of the company in East Germany (where the city of Jena is) after WWII. At one point they lost the rights to use the Carl Zeiss trademarks in the Western bloc and had to label their lenses for that market "aus Jena" instead (and replace model names like "Planar" and "Tessar" with "P" and "T").


While CZJ was making all those M42 lenses, the West Germany Carl Zeiss operation (where the city of Oberkochen is) was making lenses for the Hasselblad and Contax (and Rollei?) systems instead; that company is the Zeiss that still survives today.
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 08-28-2018, 05:12 PM  
Nikon mirrorless teaser?
Posted By Scintilla
Replies: 287
Views: 7,339
Oh, I'm well aware of the TechArt Pro, and it seems a pretty nifty universal solution. But it still doesn't do auto-aperture. If you want that, you need Nikon, Canon, or Sony/Minolta lenses, and I'm saying that there's no apparent mechanical reason Pentax couldn't also be included, it's just that nobody thinks the demand is there.
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 08-28-2018, 02:41 PM  
Nikon mirrorless teaser?
Posted By Scintilla
Replies: 287
Views: 7,339
Wait, what? All the other expensive adapters for Nikon F lenses that I can see have their own built-in aperture rings and don't give you auto-aperture. Unless by "other mounts" you meant the lens mount, but the thread's about Nikon specifically.

I admit I had forgotten that Sony's LA-EA adapters also included auto-aperture for Alpha-mount lenses, so the ability to engage a lens's aperture lever from an adapter was already proven. So that's not what's preventing companies from offering a similar adapter with auto-aperture for Pentax lenses on (say) Sony mirrorless... it's apparently just nobody thinks it's worth it to put in the effort. :-P
Forum: Pentax SLR Lens Discussion 08-28-2018, 02:25 PM  
Portrait lens for a cheap price!
Posted By Scintilla
Replies: 64
Views: 1,853
See if these sample images help you judge. Personally, I saved an Ebay search for the Pancolar 80/1.8 on the strength of shots like the one of the girl on the train tracks.
Carl Zeiss Jena Pancolar 80mm f/1.8 MC – Sample-Image.com
SMC Takumar 85mm f/1.8 – Sample-Image.com

Of course, I'm sure you can find many more examples of the Takumar right here on Pentax Forums.
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 08-28-2018, 11:38 AM  
Nikon mirrorless teaser?
Posted By Scintilla
Replies: 287
Views: 7,339
I was about to say that the question then becomes how much auto-aperture is worth it to the Nikon faithful, but then I took a look and discovered that there actually do exist adapters smart enough to give you autofocus and auto-aperture with Nikon F lenses on Sony E cameras (though they're significantly more expensive than Nikon's FTZ). Learn something new every day...
Forum: Pentax SLR Lens Discussion 08-28-2018, 08:51 AM  
Just got my 1st screw mount takumar lens and I have some questions
Posted By Scintilla
Replies: 24
Views: 653
KEH has one used for $43, and they often offer coupons if you're subscribed to their e-mails (this adapter was on their list of "select" accessories that they were giving 25% off on just the other day). Even better, UsedPhotoPro has one for only $34.
Forum: Pentax News and Rumors 08-28-2018, 08:45 AM  
Photokina, Ricoh has Confirmed
Posted By Scintilla
Replies: 1,960
Views: 105,393
Hey, don't talk about the GR that way. :p
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 08-24-2018, 07:27 AM  
Nikon Z6/Z7
Posted By Scintilla
Replies: 80
Views: 2,360
Since I'm curious about this too, here's what I came up with:

Samyang AF 24/2.8 FE -- pancake
Samyang AF 35/2.8 FE -- pancake
Voigtländer VM 40/2.8 Heliar -- pancake (but manual focus only)

Sony FE 28/2 -- 200g, 49mm filters -- not pancake but still small and light
Zony Sonnar FE 35/2.8 ZA -- 120g, 49mm filters -- nearly pancake
Sony FE 50/1.8 -- 186g, 49mm filters -- not pancake but in line with SLR nifty fifties

Zeiss Loxia 21/2.8 -- 394g, 52mm filters -- not that light, but way smaller than 21/2.8s for DSLRs

And if you don't mind getting away from the established names, Handevision has their Iberit line that seems committed to the philosophy of small size, modest aperture, and metal construction, though none of them are really pancakes (the 35/2.4 probably comes closest). And then of course there's the new Meyer-Optik Görlitz with all their horrendously expensive pancakes.

---------- Post added 08-24-18 at 10:33 AM ----------


Doesn't look like it. The 50/1.8 S, besides being almost as big as the 24-70/4 S when seen side-by-side, also is claimed to have 12 elements in 9 groups and weigh 415g, both more than any existing 50/1.8 for DSLRs that I know of.
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 08-23-2018, 12:57 PM  
Nikon Z6/Z7
Posted By Scintilla
Replies: 80
Views: 2,360
My big takeaway from this was that Nikon managed to make an adapter with a mechanical aperture actuating lever for a reasonable price, which I always thought would be the biggest obstacle to "smartly" adapting Pentax lenses to mirrorless. (Even though Nikon abandoned screwdrive AF, Sony's already proven that an adapter with such an AF motor is possible.)
Forum: Pentax DSLR Discussion 08-08-2018, 07:08 AM  
Focus Screen Compatability
Posted By Scintilla
Replies: 11
Views: 496
Huh, really? I don't know if the screens in the higher-end (or newer) cameras are better in this regard, but on my K-30, the stock screen just had far too much DoF to get accurate manual focusing. Getting the S-Type screen did wonders.

Admittedly, when I later bought a Bronica (I had never shot film before), I discovered how cool a microprism aid is -- but it only works in the center.
Forum: Pentax DSLR Discussion 08-07-2018, 09:19 PM  
Focus Screen Compatability
Posted By Scintilla
Replies: 11
Views: 496
I ordered mine from that very site for my K-30, I believe back in 2014, and it did include some shims.


Except for the S-Type (cut down Canon Ee-S?) with no aid in the center (just Super Precision Matte all over), right?
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 07-25-2018, 06:48 PM  
Nikon mirrorless teaser?
Posted By Scintilla
Replies: 287
Views: 7,339
My point about autofocus microadjustment still stands in that scenario.


Except that said rear display has only half the resolution of the EVF, or possibly even less on the newest and most expensive cameras.


For stability's sake, I personally find those situations to equal pretty much all the time. Unusual angles (like over a crowd) excepted.
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 07-25-2018, 09:16 AM  
Nikon mirrorless teaser?
Posted By Scintilla
Replies: 287
Views: 7,339
While I appreciate the WYSIWYG nature of LV/EVF as a nice-to-have, for me it's not the primary appeal of a MILC with EVF. Rather, I see it as:
  • Not having to worry about autofocus microadjustment when using the viewfinder (and that can be appreciated even by those who don't shoot MF lenses)

  • Focus peaking in the viewfinder

  • Easy lens adaptation without replacing the mount on either camera or lens

And, of course, the potential for significantly smaller lenses, but that hasn't yet been exploited as fully as I'd hope.
Forum: General Photography 07-05-2018, 07:42 PM  
"why i switch to pentax" = no?
Posted By Scintilla
Replies: 33
Views: 1,802
My first DSLR was a Canon Rebel T3 (= bottom-of-the-line) gifted to me for Christmas one year by my brother and discovered in my basement months later. I switched from Canon to Pentax in 2013 because of the unbeatable value for money in the price range I could justify. (Mirrorless systems were still too expensive in 2013 for what you got. In 2014 or 2015 I might not have made the same decision.)

Three years later, I switched back, because my K-30's aperture block failed... to Canon, because my brother sold me his used 5D for cheap and I wanted to use the 40mm pancake I still had from a going-out-of-business sale in the Rebel T3 days again, but I bought a Pentax strap to put on it and electrical-taped over the Canon logo like the press photographers at conventions always seem to do -- not because I'm pretending to be a professional, but because I'm not proud of being back on Canon.

While I miss the lenses, the ergonomics, and the mere ability to turn on the camera in the New Jersey winter, the bigger viewfinder is nice for focusing, and using Contax Zeiss lenses is easier. Oddly, I haven't really been too frustrated with giving up autofocus -- perhaps partially because nobody bothers asking me to take their picture anymore (and for self-portraits I can still use the pancake or the Tamron 28-75/2.8).

If I ever get another Pentax, it probably won't be until the KP is on closeout and I know I'm going on a trip where I'll need the weather-sealing (like yet another trip to Walt Disney World, where you can count on a 15-minute downpour every afternoon), or perhaps if the K-1 drops to three figures used and I suddenly find myself single.
Forum: Pentax Forums Giveaways 06-30-2018, 08:39 AM  
A K-1 will be given away tomorrow, June 30th!
Posted By Scintilla
Replies: 833
Views: 23,622
Interesting that, in each case, the first of the pair is the last post on its page. @Racer, if you see my post as #15, what do you see as post #60? (I am also seeing morenjavi's post show up as both #60 and #62.)
Forum: Pentax Forums Giveaways 06-30-2018, 08:26 AM  
A K-1 will be given away tomorrow, June 30th!
Posted By Scintilla
Replies: 833
Views: 23,622
Thank you! That's quite a relief. Must be some weird glitch then.
What duplicates are everyone else seeing? I'm wondering if there are others in the same boat as myself (who can't see their own posts on the thread).
Forum: Pentax Forums Giveaways 06-30-2018, 08:14 AM  
A K-1 will be given away tomorrow, June 30th!
Posted By Scintilla
Replies: 833
Views: 23,622
You don't see HippyHippo's post 4338003 showing up as both post #15 and post #16 (end of page 1 and top of page 2)?

Now I'm wondering if different people are seeing different duplicates, as that one's the only one I noticed...
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