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01-30-2011, 02:23 PM   #31
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QuoteOriginally posted by elg Quote
K-r is entry level too. K-5 replaced the K-7, so K-r is replacing the K-x. Pentax could introduce many of the same features to the K-x via firmware (except those that are dependent on the hardware), but they do not want to cripple their K-r sales, do they?

K-r has better screen, focus point highlight and faster continuous shooting mode, and that's basically it. Everything else are mostly firmware differences.

Cheers,
Erika
It makes you wonder just how different the two cameras are. I'm thinking, how hard would it be to get the k-r firmware working on the k-x? I know nothing about this sort of thing, and I'm sure there are various obstacles to overcome, but, well, stranger things have happened.

01-30-2011, 03:11 PM   #32
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QuoteOriginally posted by piesforyou Quote
I'm thinking, how hard would it be to get the k-r firmware working on the k-x? I know nothing about this sort of thing...
Well you could always try it and then report back, however that could be a costly mistake. OTOH some people say DSLR is just a fancy term for a disposable camera.
01-30-2011, 03:48 PM   #33
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QuoteOriginally posted by JHD Quote
Well you could always try it and then report back, however that could be a costly mistake. OTOH some people say DSLR is just a fancy term for a disposable camera.
Well I'm guessing the first thing that would happen is an error saying you got the wrong camera! I would hope so anyway...
03-31-2011, 08:07 AM   #34
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QuoteOriginally posted by gflauti Quote
With firmware 1.02, there is a wrong exposure in LIVEVIEW with the lens FA 50mm 1.4.

For F=1.4 or F=1.8 there is an underexposure of about 3 stops.

I reinstalled firmware 1.01, it works fine with my FA 1.4 (in liveview)!
Someone else have had this issue?
I have the same problem with 1.02. It seems that normally (with 1.01) in live view K-x uses aperture 4 for preview and with firmware 1.02 it uses aperture wide open. The problem is that the camera still thinks it is using aperture 4 instead of 1.4 (or anything else wider than 4) and therefore calculates the exposure wrong. The same problem is in movie mode if you lock exposure before recording. If you set the green button to optical preview and hold it in live view and then lock the exposure, it will calculate it correctly.

03-31-2011, 09:57 AM   #35
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QuoteOriginally posted by gflauti Quote
With firmware 1.02, there is a wrong exposure in LIVEVIEW with the lens FA 50mm 1.4.
For F=1.4 or F=1.8 there is an underexposure of about 3 stops.
I reinstalled firmware 1.01, it works fine with my FA 1.4 (in liveview)!
Someone else have had this issue?
QuoteOriginally posted by Radix Quote
I have the same problem with 1.02. It seems that normally (with 1.01) in live view K-x uses aperture 4 for preview and with firmware 1.02 it uses aperture wide open. The problem is that the camera still thinks it is using aperture 4 instead of 1.4 (or anything else wider than 4) and therefore calculates the exposure wrong. The same problem is in movie mode if you lock exposure before recording. If you set the green button to optical preview and hold it in live view and then lock the exposure, it will calculate it correctly.
Thank you both for the report.

Are Pentax aware of this problem?
Have either of you two gentlemen reported this to Pentax?

Are your versions - 1.02.21.14?

(PhotoMe on any unedited photofile and search on firmware)

Thank you.
04-24-2011, 08:11 AM   #36
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QuoteOriginally posted by UnknownVT Quote
Thank you both for the report.

Are Pentax aware of this problem?
Have either of you two gentlemen reported this to Pentax?

Are your versions - 1.02.21.14?

(PhotoMe on any unedited photofile and search on firmware)

Thank you.
I communicated via emal to Pentax distributor in Italy, but I think they did not take care of my issue.
Wich is the best way to communicate an issue to Pentax Intenational?

How I can check the complete version?

Last edited by gflauti; 04-24-2011 at 08:42 AM. Reason: added a question
04-24-2011, 08:40 AM   #37
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QuoteOriginally posted by gflauti Quote
I communicated via emal to Pentax distributor in Italy, but I think they did not take care of my issue.
Wich is the best way to communicate an issue to Pentax Intenational?
This is what I was afraid of - your reports have not had much, if any, attention -
at Pentax Global - they give a page for their regional websites -

PENTAX Camera Inquiries

(tabs for different continents)

Since Pentax is based in Japan - try that - and copy it to you local region -
may be worth referencing the posts in Pentax Forums -
so they know the problem is now public knowledge.
04-24-2011, 09:57 AM   #38
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QuoteOriginally posted by UnknownVT Quote
This is what I was afraid of - your reports have not had much, if any, attention -
at Pentax Global - they give a page for their regional websites -

PENTAX Camera Inquiries

(tabs for different continents)

Since Pentax is based in Japan - try that - and copy it to you local region -
may be worth referencing the posts in Pentax Forums -
so they know the problem is now public knowledge.
I'm not able to find the email address to contact Pentax in Japan

04-24-2011, 12:05 PM   #39
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QuoteOriginally posted by gflauti Quote
I'm not able to find the email address to contact Pentax in Japan
You're right I couldn't find an e-mail address either.

Could try guesses like support@pentax.jp, service@pentax.jp, or even info@pentax.jp
(write single e-mail using all those guesses and any others you think likely?) -
costs nothing to try, and might get some kind of response that points to the correct address?
04-29-2011, 06:12 AM   #40
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Did anyone notice a change to the way camera makes exposures with FW 1.01 update. Curently with default FW 1.00 it consistently under exposes up to about 2 stops when using centre-weight. Ie they are too dark compared to using matrix exposure system. Im having to manually push compensation nearly all the time. I prefer centre-weight as I know what part of the image is getting the reading but it seems to be in error.

Marty
05-01-2011, 11:51 AM   #41
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See my current thread titled "Matrix vs center weight exposure with K-x." My tests found only 1/2 stop underexposure with center weighted vs matrix using the 1.02 firmware version. My conclusion (and others) is that matrix is preferred over center weighted for a more consistent and accurate exposure with the K-x. I don't plan on using center weighted at all from now on.
05-02-2011, 08:07 AM   #42
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QuoteOriginally posted by lectrolink Quote
I don't plan on using center weighted at all from now on.
That's a bit silly. There will still be many situations where center weighted makes sense - eg when you have a defined subject in the center of the frame that you need correctly exposed. Very important for some types of shots. Ditto for spot AE.

Also if you use a non-Pentax lens, chances are the camera will force center weighted metering upon you anyway since that's the default there.
05-02-2011, 09:00 AM   #43
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QuoteOriginally posted by lectrolink Quote
See my current thread titled "Matrix vs center weight exposure with K-x." My tests found only 1/2 stop underexposure with center weighted vs matrix using the 1.02 firmware version. My conclusion (and others) is that matrix is preferred over center weighted for a more consistent and accurate exposure with the K-x. I don't plan on using center weighted at all from now on.
This may well be so with your practical experience for your type of photography.

However a more objective way to ascertain whether center weighted does, or does not, give lower exposures is to pick an evenly lit plain wall (no features) - and take exposures with center weighted and matrix -
do they come out different?

If not, then it's the types of subjects you are photographing
(eg: the center part of the picture may be brighter/lighter than the rest -
a very obvious example: center spot lit dark stage scene).

So this discovery may be specific to you and your photography -
and may not be generally applicable for anyone else.

If however the exposures for the evenly lit plain wall are different -
then indeed it is a fault -
which should be reported to Pentax.
05-02-2011, 05:57 PM   #44
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QuoteOriginally posted by dragra Quote
This latest update only has support to SDXC memory cards documented. As I don't use SDXC I may skip this firmware unless there are any other improvements?
Anyone did the update? Any changes noticed?

cheers,
d
Presumably FW1.02 still has SD support not "only...SDXC"

Martin
05-02-2011, 10:14 PM   #45
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QuoteOriginally posted by UnknownVT Quote
This may well be so with your practical experience for your type of photography.

However a more objective way to ascertain whether center weighted does, or does not, give lower exposures is to pick an evenly lit plain wall (no features) - and take exposures with center weighted and matrix -
do they come out different?

If not, then it's the types of subjects you are photographing
(eg: the center part of the picture may be brighter/lighter than the rest -
a very obvious example: center spot lit dark stage scene).

So this discovery may be specific to you and your photography -
and may not be generally applicable for anyone else.

If however the exposures for the evenly lit plain wall are different -
then indeed it is a fault -
which should be reported to Pentax.
I've shifted my query about exposure to General Technical Troubleshooting with pic examples under
https://www.pentaxforums.com/forums/general-technical-troubleshooting/142589-...e-anomaly.html
The original query was whether FW update tweaked the exposure system.

Martin
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