zos xavius

Joined on Aug 23, 2011

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Total: 215, showing: 1 – 20
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On article Nikon D500 versus D750: Which one is right for you? (312 comments in total)
In reply to:

Gesture: Pentax K3-II versus Pentax K-1.

Make that 3. :)

Link | Posted on Jul 25, 2016 at 16:42 UTC
On article Special K? Pentax K-1 Review (2610 comments in total)
In reply to:

Weekend Photoguy: Is anyone else seeing problems with reaching focus at infinity with A series lenses? The first weekend I tried my K-1, I noticed that all distant landscapes shot with my Pentax A 24/f2.8 were soft, but I just figured I messed something up. However, now that I've spent more time with the camera, I'm learning that there are a number of A-series lenses that it won't work with (a brand new Rokinon 14mm/f2.8 is another example). I'm wondering if others are seeing this or if it's only my camera. Note that these lenses work fine on my other Pentax cameras (an ist*D and a K20D). I'm getting the impression that Pentax my have changed the flange to sensor distance just enough to make it impossible to reach focus with some earlier lenses, but I'd like to confirm this.

If they work fine on your older cameras that should tell you something to be honest. The flange distance should be equal regardless.

Link | Posted on Jul 7, 2016 at 17:09 UTC
On article Special K? Pentax K-1 Review (2610 comments in total)
In reply to:

Weekend Photoguy: Is anyone else seeing problems with reaching focus at infinity with A series lenses? The first weekend I tried my K-1, I noticed that all distant landscapes shot with my Pentax A 24/f2.8 were soft, but I just figured I messed something up. However, now that I've spent more time with the camera, I'm learning that there are a number of A-series lenses that it won't work with (a brand new Rokinon 14mm/f2.8 is another example). I'm wondering if others are seeing this or if it's only my camera. Note that these lenses work fine on my other Pentax cameras (an ist*D and a K20D). I'm getting the impression that Pentax my have changed the flange to sensor distance just enough to make it impossible to reach focus with some earlier lenses, but I'd like to confirm this.

Its possible your flange distance is wrong. It should be made to the standard. Otherwise FA lenses would not work either. This is the first complaint about it I have read. Have you tried live view to see if maybe you are actually focusing past infinity? Most of my manual lenses have sloppy stops and focus slightly past which is actually kind of fine with me. I would rather them have a little play than be too short. I would consider exchanging your camera for another, but that's me. Manual lenses should work fine. The flange distance is critical and they would never change that.

Link | Posted on Jul 7, 2016 at 05:37 UTC
In reply to:

jaxson: I'd love a way to convince my Pentax that it has a HSS flash on it's hot shoe, and then send that info to an off camera HSS flash. Requiring me to buy two HSS capable flashes, just to use one off camera seems at best ridiculous, and at worst a cruel sales technique.

If the Cactus can achieve this, then I'm totally all in!

Cactus has been working with pentax more so I would wait and see if they worked HSS P-TTL support in. Their triggers are completely awesome. Being able to control banks of old TTL flashes' output from one spot is just amazing really.

Link | Posted on Jul 1, 2016 at 18:30 UTC
In reply to:

PKDanny: They will fry your camera!!????

no

Link | Posted on Jul 1, 2016 at 18:27 UTC
In reply to:

endofoto: This is a great improvement, if it really works. HSS with 1/8000 will drain 10 times more battery power I guess, and it wont be very practical with weak small AA batteries. However with strong batteries this will save the day even in midday sun at the beach.

Yeah an HSS pulse is about the same power draw as firing the flash 1:1 or maybe even a bit less. Obviously firing your flash 1:1 will draw the battery down a lot faster than 1:16, but there's no way around that of course.

Link | Posted on Jul 1, 2016 at 18:26 UTC
On article Meyer-Optik Goerlitz launches 3-element 95mm F2.6 (120 comments in total)
In reply to:

kgreenhough: Guys, it's time for some tough love. This lens but the latest symptom of the disease that breeds when photographers spend too much time with other photographers. You are lying to yourself if you think that the "unique characteristics" produced by these lenses are anything but ugly. A quirky, overpriced paperweight is not going to set your work apart in any way.

I looked at the samples and kind of like its output. For $1700 though? Pass. It has 3 elements inside. 3! That's a bit over $600 for each piece of glass.

Link | Posted on Jul 1, 2016 at 18:16 UTC
On article Pentax K-1 real-world sample gallery (143 comments in total)
In reply to:

steelhead3: Jpegs seem a little flat...usually the boost is quite pronounced. Raw shots show what can be accomplished.

it depends on what profile they use. in jpeg i really like their reversal profile with very punchy colors and greens, but that's me. jpeg colors are pretty meaningless in the end anyways.

Link | Posted on Jul 1, 2016 at 18:13 UTC
On article Pentax K-1 Pixel Shift: An update (96 comments in total)

To the people thinking that they will only sell 5 of these cameras: Current production cannot keep up with demand. They are cranking out 7000 cameras a month. They have also done very well with the K-3 and K-3 II and have picked up quite a few new users over the past few years. Pentax is doing a lot better than most people think with Ricoh's imaging division turning a solid profit. They were smart enough to realize that it is just a small boutique brand and have slowly grown it. They could be a lot more aggressive in marketing and Pentax has its own share of problems, but for now, the future looks pretty bright. What other manufacturer has interchangeable lens cameras covering 4 format sizes from the tiny Q to medium format? None. Ricoh deserves a lot of credit for pulling Pentax out of its grave. And to Barney and the dpreview crew: Thank you for taking the time to look into this camera and every pentax flagship previous. I realize that your time is limited. The K-1 deserves a chance.

Link | Posted on Jun 12, 2016 at 12:49 UTC as 14th comment
On article UPDATED: CP+ 2016: shooting the Pentax K-1 in Yokohama (377 comments in total)
In reply to:

Tactical Falcon: I am delighted by what the K1 is, but reality for me is I am happy with my APS-C for a long while, but I am so glad Pentax has made full frame real. I have been looking at a used Canon 5d mk.2, and maybe if I am patient, maybe a K1 used might be a candidate too. The budget you know.

the K-3 > 5dmk2. the 5dmk2 might have a slight edge at high iso but that's about it. The K-3 easily outresolves the canon and has greater dynamic range. Its also a lot more usable handheld at lower shutter speeds to to SR.

Link | Posted on Mar 5, 2016 at 13:08 UTC
On article A classic reinvented? Domke Chronicle Review (110 comments in total)
In reply to:

AbrasiveReducer: Canvas is heavy and cheap (at least to the manufacturer.) This bag is over 4 pounds, empty. Canvas tends to soak up water too, even when treated. The only upside is that it looks like you're roughing it. Those big metal hooks add weight as well, and there's no shoulder pad. Ballistic nylon may not look as cool but it's much lighter and the good stuff is practically waterproof. To each his own.

Yeah I have an f-2 as well and its pretty light. Less than 4lb certainly.

Link | Posted on Jan 24, 2016 at 11:52 UTC
On article A classic reinvented? Domke Chronicle Review (110 comments in total)
In reply to:

miles green: Lovely bags, but those heavy metal clips swinging around a bag full of glass... scary.

You *definitely* have to be mindful of them, but in reality they aren't such a problem.

Link | Posted on Jan 24, 2016 at 11:51 UTC
On article A classic reinvented? Domke Chronicle Review (110 comments in total)
In reply to:

Osvaldo Cristo: If you are interested in that bag I strongly recommend you also consider Domke F-2... it is USD 90 in the USA and without the bad taste "color detail"...

The canvas on the F-2 is fine and so are the inserts. Its also a photojournalist classic bag that never goes out of style. Mine looks like hell because I never clean it which is exactly how I want it to be. Character!

Link | Posted on Jan 24, 2016 at 11:46 UTC
On article A classic reinvented? Domke Chronicle Review (110 comments in total)

I love my domke f-2. The only thing I would possibly replace it with is a black domke f-2. $350 is a lot more than the $100 I paid. Maybe I should buy a spare black F-2 before they decide those are worth tons of cash too! :)

Link | Posted on Jan 24, 2016 at 11:42 UTC as 15th comment
On article Gear of the Year Part 4: Dale's pick - Samsung NX1 (408 comments in total)
In reply to:

Robert Zanatta: Some of the photos look great, but why is the pick of the toddler at ISO 4000 so grainy? Was there no noise reduction

I must add look at the iso640 shot. it actually looks a little cleaner than the two at lower isos. I'm not familiar with this sensor but it could be that shadow pushes in PP are causing some of the noise you are seeing. I don't really know. I get the feeling that iso100 can be pretty clean with correct exposure and not a lot of pushing. Didn't the NX1 rate lower on DR than sony's sensors anyways? That shows a much higher noise floor for starters. Quite frankly I'd be happy if aps-c sensors stayed around 16-20mp for a while and they just focused on DR and quality. I do like the resolving power my k-3 has but also miss the ability to push raw files all over the place with minimal noise present. That 1 EV of DR is quite useful. Especially when you are trying to expose for a bright sky against a dark background.

Link | Posted on Dec 19, 2015 at 17:27 UTC
On article Gear of the Year Part 4: Dale's pick - Samsung NX1 (408 comments in total)
In reply to:

Robert Zanatta: Some of the photos look great, but why is the pick of the toddler at ISO 4000 so grainy? Was there no noise reduction

Good catch on the iso 100 shot. I would have never have looked. To be fair the iso4000 shot isn't bad and considering the pixel pitch of the NX1 its actually pretty impressive. There is a lot of fine detail captured there. It was an ACR conversion and I find the lack of luminance smoothing NR a positive myself. This is on par with FF performance from a few years ago and that's nothing to really complain about. The iso 100 shot though? Wow. Lots of noise in the shadows and lots of false artifacts in the fine detail. I have a K-3 and while it has some false detail and moire it is nowhere near this bad. Same for the 16mp k-5 IIs which I also use regularly and that should have even worse moire characteristics given its pixel pitch. Is that CA we are seeing? The rainbow patterns along the lower structure just look like moire to me. All that artifacting really detracts IMO. If you printed this large I don't think it would look very good but that's a rather subjective thing for most people.

Link | Posted on Dec 19, 2015 at 17:20 UTC
On article Kodak fits 50MP into dynamic range (1 comment in total)

RIP Kodak :(

Link | Posted on Dec 5, 2015 at 14:30 UTC as 1st comment
On article Sony finalizes buyout of Toshiba's sensor business (91 comments in total)
In reply to:

ProfHankD: The sad truth is that the semiconductor fab business is condensing to just a handful of players -- this isn't just an imaging sensor thing. The problem is that a new fab line costs billions of dollars, and you need to make a new line quite often, so you need gobs of sales volume to justify the investment. The answer has largely been to fab chips for others too, e.g., doesn't Sony already make some Fuji-designed sensors? Still, it is sad to see the fab choices narrowing....

This is how intel eventually dominated AMD. AMD at one point had a technological advantage and then within a short period of time intel just built up new lines that produced chips on a smaller process negating amd's advatages in both performance and power consumption. Cell phone sensors are what is driving innovation right now. Everything you are seeing in the A7R II is the same technology just scaled up. i was reading about the D1 sensor and it turns out it was just a cheap P&S sensor scaled up which is why it had 10mp in photdiodes and yet was masked off to only produce a 3.2mp image out of that. Kind of like the Nokia pureview.....

Link | Posted on Dec 5, 2015 at 13:59 UTC
On article Sony finalizes buyout of Toshiba's sensor business (91 comments in total)
In reply to:

sneakyracer: If anything happens to Sony then there will be no more digital cameras...

Yeah, because Aptina, Cmosis, Samsung, Canon, Panasonic, and quite a few others don't make camera sensors at all. Get real.

Link | Posted on Dec 5, 2015 at 13:53 UTC
On article Studio tests and samples: Leica SL (beta) (754 comments in total)
In reply to:

odpisan: In studio comparison with Pentax K3 II / "Pixel shift" / RAW & jpg ... by 50000 - is Pentax the absolute winner .. by 25000 are almost the same ... by 12800 no diferencies ... by 6400 Pentax much better ... ofcourse is Leica better if Pentax take pictures in "normal mode".

But ...... you know what I mean ..
:o)

The D-day is comming .. the day when I'll get my Pentax K3 II. My be even Pentax 645Z ...
:o))))

That is a software problem that people are already looking at. The raw files contain each individual frame. It would be rather trivial to select the parts the move and cause error and use data from a single frame to fill in the gaps. Obviously with large movement this is not possible but say in landscapes not much is really moving all that quickly. It wouldn't be hard to implement an algorithm that does this in camera. There are obvious benefits to using it in the real world once you can control errors. If you are so inclined you can easily just take a single frame from a pixel shift raw and import both into lightroom and erase every last bit of error. You would just have some slightly softer areas of your image. No big deal right? Of course scenes with large movement are out but it is a start. I think the full frame will improve on PS hopefully.

Link | Posted on Oct 31, 2015 at 01:11 UTC
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