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Forum: Pentax K-S1 & K-S2
01-11-2017, 12:42 AM
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Yes, if you are prepared to set ISO manually, which would mean to do your pictures more than once, or if you use them in direct mode.
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Forum: Pentax K-S1 & K-S2
01-10-2017, 05:56 AM
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As I stated in my last post - the K-S2 cannot set automatic ISO in bounce flash mode independent of the external flash used. The official Pentax message was: it is a hardware limitation that cannot be fixed in software.
The K-3II does not have this problem; I guess K-3 would also work, as it has the same light meter.
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Forum: Pentax K-S1 & K-S2
11-22-2016, 12:04 PM
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The whole issue has been circling around, and via the US Ricoh branch, went through Europe to Japan, and this is what I've got from them, directly from the horse's mouth:
"After additional testing with our engineers in Japan the result is the K-S2 is operating as expected with the external flash in bounce mode. [...] In the situation where the area is very dark and the flash is set on bounce mode the photo sensor on the K-S2 is overwhelmed when the flash is fired causing the image to be overexposed."
That concludes the whole saga of "WTF, why doesn't it work"; maybe not to my satisfaction, but at least now I have a clear picture. Even if overexposed ;).
Happy pentaxing to you all,
M.
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Forum: Pentax K-S1 & K-S2
11-01-2016, 12:26 AM
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So yes, Pentax has admitted the auto-iso in P-ttl mode does not work in K-S2, they've finally stopped beating about the bush.
However unwelcome, this is a reasonable statement; pity that it took them half a year to figure that out.
Still a mystery to me, why it works in K-3II, but not in K-S2. Oh, well... K-S2 will be the first to sell.
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Forum: Pentax K-S1 & K-S2
10-30-2016, 11:07 PM
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In the photo studio - sure. During scheduled photo session - sure. Then I can consider ambient light, distances, GN, aperture, ISO, humidity, weekday and moon phase to boot. But not on a trip, in a hurry - then I want to take the picture. It might not be perfect, it might be less than stunning, but it shouldn't be completely blotched, either. For this the automation has to work. And, funnily enough - it does! On K-3II, on D5200, on D5300, just not on K-S2.
So, yes, on K-S2 there is a "limitation": the automation does not work. It would be nice Pentax put it in the User's Manual, at least.
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Forum: Pentax K-S1 & K-S2
10-25-2016, 10:05 PM
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Funnily enough K-S2 overexposes with their own AF201FG, too.
The last reply from Pentax after half a year of "thinking" is "if automation does not work, use the manual mode". Their customer service sucks like hell.
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Forum: Pentax K-S1 & K-S2
03-26-2016, 02:05 PM
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I'm writing this for the third time, I will not be bothered to do it again. Auto-logout does this to me.
I want the automation to help me when I do not have time to do things manually, and I do not want to be surprised by it, as it is the case here (why auto-ISO works with internal, but not external flash?).
Pentax got the example pictures they requested, I hope to hear from them next week.
Happy Easter,
M.W.
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Forum: Pentax K-S1 & K-S2
03-23-2016, 02:02 PM
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mcgregni,
Thanks for the support. I still think this is a bug of the firmware, so I am trying to resolve the the issue, also in discussion with Pentax. They have said that in P+auto-ISO "some areas of the picture might be overexposed" (at +5 stops it redefines "some"), and that I should go to manual ISO mode. After my protest they went quiet, and so have I. In official newspeak it is called "your issue has been escalated"... So I wait.
My findings so far:
Setup: dark room at night, taking picture of a beige wall and white window frame. No ambient light.
Actors:
I) K-S2 +
1) internal flash,
2) external flash
a) AF201FG,
b) Metz 44-AF2.
II) D5300 + SB-300
Results:
I.1: The internal flash behaves as I expect it - the ISO in the P+auto-ISO mode is reduced to sensible value, and the picture is more-or-less properly exposed. Exactly the same way my Nikon does it.
I.2.a: The camera sets the ISO to the max. value, overexposing the picture,
I.2.b: as in I.2.a
II: camera sets the ISO to something sensible, no overexposure.
I will keep the forum posted of any new developments.
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Forum: Pentax K-S1 & K-S2
03-13-2016, 12:07 PM
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"token timeout", so I have to write everything again :(. Well, I'll be quicker this time.
It seems K-S2 has a firmware bug, that sets the ISO in P + auto ISO mode with external flash to maximum value and so overexposing the picture, by 5-7 stops. I can set the ISO by hand and I admire all who want to set the exposure manually, but it is not me, and probably never will. The P-TTL was created to make the settings automatic, and here, unlike on my Nikon, it simply does not work. I can see pre-flashes, but the metering system seems to be fooled by otherwise complete darkness, sets the ISO to max and overexposes. Annoying.
Of course it might be I missed something, there is a setting that will make it work, but so far I have not found it.
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Forum: Pentax K-S1 & K-S2
03-13-2016, 03:11 AM
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I've made 2 tests with the simplest possible external flash set-ups:
Test 1: AF201FG on the hot shoe, set to Auto mode, camera set to default flash settings. There is no other flash there. No remote firing, no master/slave.
Test 2: Metz on the hot shoe, set to ttl, camera to default. No other flash, no remote, no master/slave.
The only thing that might, I think, have influenced the exposure, is "link ae and af point" (menu C5). I will test this evening again to see, if this was it.
Otherwise - all metering- or flash- wise is set to default/auto.
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Forum: Pentax K-S1 & K-S2
03-12-2016, 02:48 PM
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I was testing with one flash at a time - either Pentax or Metz.
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Forum: Pentax K-S1 & K-S2
03-12-2016, 02:17 PM
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I've been testing the camera with the flash. I've noticed, that when I try to take pictures with external flash in TTL mode, with the kit lens set to 18mm, I have to add -2EV flash compensation and -5EV exposure compensation to get decent pictures. With no compensation everything is almost completely white.
When I zoom to 50mm, only -3.5EV (and -2EV for flash) is enough.
When I take a 55-300 zoom and zoom it all the way, only -2EV for flash is enough.
It did not depend on the flash (Pentax or Metz behaved the same).
I bounce from the white ceiling and take a picture of a wall/window 3 meters away, in almost complete darkness. The mode is set to "P", the metering is set to default.
Camera firmware version: 1.11.
Is it me doing something wrong, or is it the camera?
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Forum: Pentax K-S1 & K-S2
11-22-2015, 02:49 AM
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It does not happen to my D5300, so I was surprised. Next weekend I will have more chance to take pictures - so far it works better after cleaning, but I took just a few pictures.
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Forum: Pentax K-S1 & K-S2
11-17-2015, 10:41 AM
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I did not notice that.
OK, will clean and check.
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Forum: Pentax K-S1 & K-S2
11-17-2015, 12:22 AM
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Hi,
I've been taking pictures of a lake the other day, and I've noticed that some of them are overexposed - sometimes just white or almost white. This is not settings, I think, as the light metering was centre weighted average. I do not think this is the outdated firmware, as I have the newest one. It is also not just one off - I take pictures in series: one subject 5-8 pictures. Now from the series of the pictures of the lake sometimes up to 4 in a row would be seriously - but not uniformly - overexposed. I can see it even from the JPG size - normally it would be >8MB, but the overexposed ones are ~3MB and the almost white ones - ~1MB.
On the day I took ~500 pictures, some of them of a park, some of the lake. The park pictures look fine. Only the lake ones are problematic.
Has any one of you come across this issue? What should I do with this?
Here are the examples:
https://www.flickr.com/photos/107497094@N02/albums/72157661318219521 |
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Forum: Welcomes and Introductions
04-06-2015, 11:10 AM
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Thank you all for a nice welcome :).
I will add my pictures as I go :).
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Forum: Welcomes and Introductions
04-03-2015, 03:54 AM
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Hi Everyone,
I am starting my adventure with Pentax; I just bought K-S2 + 18-50 + 50-200. Hopefully, it will live to the promise of being WR :)
I live in Germany, close to Lake of Constance. Stunning views, if you can avoid getting high voltage lines in the picture :fedup:.
Happy Easter :)
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