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12-15-2009, 03:28 PM   #271
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Pentaxor, thanks for the details. Amazing results. If you did M mode expsoure, the +1 exposure compensation has no effect, right?, unless the green button gives a +1EV exposure. ? Anyhow, can you tell me, what the histogram looked like?, was it over the right edge a bit or more than that?

ETTR does give impressive results, I've tested it, but so awefully difficult to do in real life situations. You've done very well, I am very impressed.

12-15-2009, 05:19 PM   #272
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QuoteOriginally posted by Pentaxor Quote
here you go,

Exif Sub IFD

* Exposure Time (1 / Shutter Speed) = 1/160 second ===> 0.00625 second
* Lens F-Number / F-Stop = 80/10 ===> /8
* Exposure Program = manual control (1)
* ISO Speed Ratings = 3200
* Exif Version = 0221
* Original Date/Time = 2009:11:08 22:47:48
* Digitization Date/Time = 2009:11:08 22:47:48
* Components Configuration = 0x01,0x02,0x03,0x00 / YCbCr
* Exposure Bias (EV) = 10/10 ===> 1
* Metering Mode = pattern / multi-segment (5)
* Flash = Flash did not fire, compulsory flash mode
* Focal Length = 30000/100 mm ===> 300 mm

# Last Modified Subsecond Time = 937
# FlashPix Version = 0100
# Colour Space = 65535
# Image Width = 800 pixels
# Image Height = 533 pixels
# Image Sensing Method = one-chip color area sensor (2)
# Image Source = digital still camera (DSC)
# Scene Type = directly photographed image
# Custom Rendered = normal process (0)
# Exposure Mode = manual exposure (1)
# White Balance = auto (0)
# Focal Length in 35mm Film = 450
# Scene Capture Type = standard (0)
# Contrast = normal (0)
# Saturation = normal (0)
# Sharpness = soft (1)
# Subject Distance Range = distant view (3)
Cool thanks for that.

Just out of curiousity how long ago did you purchase your K7?
12-15-2009, 05:26 PM   #273
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Has anyone considered that possibly later models of the K7 MIGHT have slightly updated Samsung sensors?
12-15-2009, 05:51 PM   #274
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QuoteOriginally posted by C.W Tsorotes Quote
Has anyone considered that possibly later models of the K7 MIGHT have slightly updated Samsung sensors?
I wondered if I had a bad one. I will not use my K-7 past ISO 1600 as a max..Yet, I have no issues using my K20D's at ISO 3200....I bought a second K-7 and after using it for a couple of days, it was the same as my original K-7 that I bought on pre order. So I have tried a new one. Now it could have been old stock, though I doubt that. I ended up taking it back and I got a D300 to go along with my D700. The D300 and the K20D are very close in ISO performance. I can't tell the difference between those two, but the K-7 and me, just don't get along.

Now I have used the K-7 in challenging low light conditions and I am happy to report that the low light auto focusing on the K-7 is very close to the D300 which is leaps better than the K20D, but not close to the D700 that can auto focus in very dark conditions....But I digress

12-15-2009, 07:46 PM   #275
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iso 3200, f5.0, 1/20

12-15-2009, 11:26 PM   #276
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QuoteOriginally posted by pcarfan Quote
Pentaxor, thanks for the details. Amazing results. If you did M mode expsoure, the +1 exposure compensation has no effect, right?, unless the green button gives a +1EV exposure. ? Anyhow, can you tell me, what the histogram looked like?, was it over the right edge a bit or more than that?

ETTR does give impressive results, I've tested it, but so awefully difficult to do in real life situations. You've done very well, I am very impressed.
No, it doesn't affect the exposure values unless you hit the green button afterwards. I didn't put the exposure too far to the right edge on the histogram. although there are times that you need to expose more than enough or further to the edge and beyond (just don't blow up the highlights), and there are times that you don't have to put too much exposure on the image but just enough to significantly show that it crosses the middle line (mountain peak in between the middle line and the far right end corner).

Last edited by Pentaxor; 12-17-2009 at 12:09 PM.
12-15-2009, 11:33 PM   #277
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QuoteOriginally posted by C.W Tsorotes Quote
Cool thanks for that.

Just out of curiousity how long ago did you purchase your K7?
the first time it came out. I don't think that they release an updated Samsung sensor for the K-7. but I do believe that a firmware could possibly improve the Noise Factor. that would be a great improvement. I don't mind a lil bit of help from an update, boosting it up a stop would be very nice. although I'm pretty much satisfied and happy on being able to produce acceptable images at ISO 3200 using the current K-7. the next challenge this time would be shooting at ISO 6400!
12-16-2009, 10:17 PM   #278
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QuoteOriginally posted by C.W Tsorotes Quote
Amazingly clean have you got EXIF data?
BTW, the EXIF was right there in the actual pictures. If your browser doens't have a way of showing you EXIF info (like via a right click menu), you might investigate whether there is an update or plug-in that will.

12-17-2009, 12:34 AM   #279
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QuoteOriginally posted by Marc Sabatella Quote
BTW, the EXIF was right there in the actual pictures. If your browser doens't have a way of showing you EXIF info (like via a right click menu), you might investigate whether there is an update or plug-in that will.
I use firefox.
12-17-2009, 12:37 AM   #280
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K-x 12800

I probably didn't need to go to 12800 here, but it let me use f9 under low-light .
Some motion blur due to slow shutter. K-x, FA 50 1.4. Time was about 7:45pm



JPG straight out of camera, no NR aside from the in-camera NR, just resized.

The RAW shows a higher IQ, and PPing the RAW improves the image a lot, but the JPG is acceptable for screen/web use.

[This is from the Pentaxforum albums - is the EXIF visible, or do Pentaxforums strip it out?]

EXIF:
Make - PENTAX
Model - PENTAX K-x
Orientation -
XResolution - 72
YResolution - 72
ResolutionUnit - Inch
Software - Picasa 3.0
DateTime - 2009:12:13 19:40:48
YCbCrPositioning - Co-Sited
Copyright -
ExifOffset - 640
ExposureTime - 1/45 seconds
FNumber - 9.50
ExposureProgram - Aperture priority
ISOSpeedRatings - 12800
ExifVersion - 0221
DateTimeOriginal - 2009:12:13 19:40:48
DateTimeDigitized - 2009:12:13 19:40:48
ComponentsConfiguration - YCbCr
ExposureBiasValue - 0.00
MeteringMode - Multi-segment
Flash - Flash not fired, compulsory flash mode
FocalLength - 50.00 mm
FlashPixVersion - 0100
ColorSpace - Unknown (0xFFFFFFFF)
ExifImageWidth - 680
ExifImageHeight - 1024
InteroperabilityOffset - 1112
SensingMethod - One-chip color area sensor
FileSource - Other
SceneType - Other
CustomRendered - Normal process
ExposureMode - Auto
White Balance - Auto
FocalLengthIn35mmFilm - 75 mm
SceneCaptureType - Standard
Contrast - Normal
Saturation - Normal
Sharpness - Normal
SubjectDistanceRange - Distant view

Thumbnail: -
Compression - 6 (JPG)
XResolution - 72
YResolution - 72
ResolutionUnit - Inch
JpegIFOffset - 1236
JpegIFByteCount - 7071

Last edited by rawr; 12-17-2009 at 12:57 AM. Reason: Added EXIF dump
12-17-2009, 12:49 AM   #281
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QuoteOriginally posted by rawr Quote
I probably didn't need to go to 12800 here, but it let me use f9 under low-light .
Some motion blur due to slow shutter. K-x, FA 50 1.4. Time was about 7:45pm



JPG straight out of camera, no NR aside from the in-camera NR, just resized.

The RAW shows a higher IQ, and PPing the RAW improves the image a lot, but the JPG is acceptable for screen/web use.

[This is from the Pentaxforum albums - is the EXIF visible, or do Pentaxforums strip it out?]

no exifs. though pretty nice and even usable at ISO 12800.
can't wait what Pentax has to offer next year.
12-17-2009, 12:56 AM   #282
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Aha. I've edited the original post then to include the EXIF.

I think it would be nice for the PFF albums to NOT strip EXIF...
12-17-2009, 01:12 AM   #283
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[langtitle=de]German Live Gig with Tobias Sudhoff[/langtitle]

Hi, this is a photo taken in a small culture club in Wertheim.

Pentax K 10D with 1600 ISO.

Regards LG
12-17-2009, 01:29 AM   #284
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More 12800 K-x fun

Just as a supplement to my previous post...

This is the Lismore Carols by Candlelight stage properly exposed for the performers from a distance: K-x, f2, ISO 280, FA 50 1.4 JPG straight out of camera:



To illustrate the K-x's ability to see in the dark, this is a crowd detail scene taken shortly after the image above, K-x, f1.4, FA 50, ISO 12800, JPG straight out of camera. Ambient light was provided mostly by the glowsticks people were holding, the distant stage lighting, and starlight.


Last edited by rawr; 12-17-2009 at 06:14 AM.
12-17-2009, 04:32 AM   #285
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K-x iso2500 DA16-45 1/30 f4 in-camera NR medium no PP except converting from RAW. I like it



Cheers Andras
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