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Forum: Pentax DSLR Discussion 2 Hours Ago  
Lower spec K1
Posted By Gimbal
Replies: 61
Views: 1,609
Dropping the shutter, mirror, penta prism and shake reduction and use all electronic gadgets instead might give room for a price reduction. And a truly brick-like robustness, nothing that moves inside.
Forum: Pentax K-1 4 Days Ago  
Dynamic range test: K1 show 16ev of DR
Posted By Gimbal
Replies: 21
Views: 1,507
In principle it shouldnít matter if you up size or down size (or which size you aim for) since the comparison is relative. If it matters then there is something wrong with whole idea.
Forum: Photographic Technique 11-10-2017, 12:50 AM  
Portraiture Shake Reduction (SR) on a Monopod?
Posted By Gimbal
Replies: 14
Views: 444
If you use ES, SR will automatically turn off though. IIRC.
Forum: Pentax K-1 11-07-2017, 04:37 AM  
magnified view in LV ?
Posted By Gimbal
Replies: 11
Views: 502
Mine doesnít, it uses the zoom level I used last time. Maybe itís a setting somewhere?
Forum: Pentax K-1 11-03-2017, 01:01 PM  
GPS
Posted By Gimbal
Replies: 11
Views: 489
I doubt calibration will help as that most probably only calibrates the magnetic compass. GPS precision depends on number of satellites received, so it's dependent on where you are. Try it again somewhere else and let i run for a while and precision will improve greatly.
Forum: Pentax K-1 11-01-2017, 12:29 AM  
Post your K-1 pictures!
Posted By Gimbal
Replies: 13,076
Views: 1,127,442
Thanks. No other pictures as I donít use it normally, itís just too large/heavy and slow to use. It has a tripod mount but itís located at the end of the +4kg lens so the unbalance is epic, the tripod head has to be locked down firmly making aiming adjustments hard. But someday I will make a bracket of some sort to balance it better.
Forum: Pentax K-1 10-31-2017, 12:57 AM  
Post your K-1 pictures!
Posted By Gimbal
Replies: 13,076
Views: 1,127,442
Thanks, it IS a monster lens and this is pretty much all I use it for because itís very unbalanced and awkward to use.
Forum: Pentax Full Frame 10-31-2017, 12:46 AM  
Thought FF (k1) would give me. Significant increase in light gathering vs k70
Posted By Gimbal
Replies: 18
Views: 1,295
I would argue that it IS the larger format that gives you one stop better SNR performance, anything above that is due to better sensor tech. (Under condition that the pictures are viewed at the same size when compared.)
Forum: Pentax K-1 10-31-2017, 12:21 AM  
Post your K-1 pictures!
Posted By Gimbal
Replies: 13,076
Views: 1,127,442
The moon, and thatís it. Not particularly artistic but still here it is.
Shoot with K-1 and Pentax 135-600 at 600mm. Near 100% crop.
Forum: Pentax SLR Lens Discussion 10-29-2017, 02:03 AM  
Samyang 24mm F1.4 V DFA 24-70 at 24mm
Posted By Gimbal
Replies: 3
Views: 475
I can't compare them as I only have the 24 samyang, but the only drawback is the manual focusing at it's hard to nail focus wide open (if you focus optically).

Other than that I'm very happy with my copy. With a tripod and focusing using live view and zoomed in the sharpness is VERY good and even across the whole frame (K-1) and you don't have to stop down all the way to 5,6 to get that. It's razor sharp already at 2.8, and I'm a pixel-peeper. The da21 limited on a K-5 is really bad in comparison as far as sharpness goes, at least my copy was useless at the edges.

Flare can be a problem though with strong lights.
Forum: Pentax News and Rumors 10-26-2017, 03:50 AM  
D-FA* 85mm f1.4 also coming
Posted By Gimbal
Replies: 1,335
Views: 98,562
Also, where is that pot of gold everyone is talking about?
Forum: Digital Processing, Software, and Printing 10-24-2017, 05:57 AM  
Photo catalog software beyond simple Lightroom: Options to pick and choose 2017
Posted By Gimbal
Replies: 6
Views: 539
The future is here:
darktable for Windows | darktable

I have not tried it myself though.
Forum: Pentax Full Frame 10-14-2017, 04:04 AM  
Shake reduction stuck to ON after firmware 1.4.1?
Posted By Gimbal
Replies: 11
Views: 646
No that is normal, and it has always been that way with the K-1. The sensor is lifted and held in place even with SR off and it starts with half press. With the K-5 and earlier this action wasn't started until you fully pressed the shutter and thus no sound during half press.
Forum: Pentax K-5 10-08-2017, 03:03 AM  
Is the Pentax K-5 a classic ?
Posted By Gimbal
Replies: 49
Views: 3,773
K10d - classic
K-5 - classic
K-1 - classic

The others? Nah...
Forum: Pentax K-1 10-06-2017, 03:30 AM  
Post your K-1 pictures!
Posted By Gimbal
Replies: 13,076
Views: 1,127,442
Samyang 135mm wide open, and some crop.
Forum: Digital Processing, Software, and Printing 10-02-2017, 03:34 AM  
Lightroom Upgrade Caution
Posted By Gimbal
Replies: 12
Views: 934
I installed the dng converter the other day and found the .lcp files somewhere under C:\ProgramData\Adobe\CameraRaw
Forum: Pentax K-1 10-02-2017, 03:30 AM  
Astrotracker use question
Posted By Gimbal
Replies: 16
Views: 790
As already stated, 3 minutes is way too optimistic to start with. Begin with 30sec and increase time in steps until limit.
Forum: Pentax K-1 10-02-2017, 12:23 AM  
shutter vibration and shake reduction
Posted By Gimbal
Replies: 69
Views: 3,675
Yes, when a rolling ES is not suitable.
Forum: Digital Processing, Software, and Printing 09-29-2017, 02:19 AM  
Pixelated Pixel Shifted Images?
Posted By Gimbal
Replies: 28
Views: 1,068
I was referring to CD5, the "browser" button is lit up / selected in your example image. I don't know anything about Faststone though as I don't use it.

I don't believe the jpeg options as in size and quality affect the embedded image quality, although I don't really know for sure.
Forum: Digital Processing, Software, and Printing 09-28-2017, 05:59 AM  
Pixelated Pixel Shifted Images?
Posted By Gimbal
Replies: 28
Views: 1,068
Yes that is jpeg artifacts, and I know why you are seeing them.

You are in "browser" mode and are thus looking at the embedded rather heavily compressed jpeg image, not the real rawdata. You can change this in the settings somewhere but not using the jpeg will slow down browsing.

The quality of the embedded jpeg seems to be size restricted (speculation) so when images have less details as in lots of blurry background you will not see the artifacts, but when there is lots of details all over the image the size restriction kicks in and the compression will be high and artifacts appear.

The same "problem" can be seen when browsing images on the back LCD of the K-1, if there is lots of details (for example a landscape scene with leaves and branches all over the screen and everything is in focus) the "blocks" will appear and judging critical focus will be difficult.
Forum: Pentax DSLR Discussion 09-24-2017, 03:08 AM  
Is the moving sensor slowing autofocus????
Posted By Gimbal
Replies: 91
Views: 3,279
You obviously don't understand it, so maybe you should cool down until you do.
Forum: Pentax DSLR Discussion 09-23-2017, 11:52 PM  
Is the moving sensor slowing autofocus????
Posted By Gimbal
Replies: 91
Views: 3,279
Look through the viewfinder and do some very small pitch and yaw movements, the scene will appear to move up/down and left/right.

The SR compensates for this by moving the sensor up/down and left/right, and have done so since the K-10d days.

The two new axis are for when the camera is translated left/right and up/down, the scene appears to move accordingly thus the SR compensates for this by moving the sensor left/right and up/down.
Forum: Pentax DSLR Discussion 09-23-2017, 09:14 AM  
Is the moving sensor slowing autofocus????
Posted By Gimbal
Replies: 91
Views: 3,279
Actually movement in all 5 "axels" are compensated by moving and rotating in the focal plane. So the senor itself is always in the same plane, only sliding left/right, up/down and rotating a few degrees.
Forum: Pentax DSLR Discussion 09-23-2017, 03:31 AM  
Is the moving sensor slowing autofocus????
Posted By Gimbal
Replies: 91
Views: 3,279
Why not? I'll bet they do.
There is a tight fit and that is way some/most cameras need a slight nock on the side before you can here the sensor plate slide inside the body while tilting it from side to side, the famous Pentax "clunk".
Forum: Pentax DSLR Discussion 09-23-2017, 01:33 AM  
Is the moving sensor slowing autofocus????
Posted By Gimbal
Replies: 91
Views: 3,279
That is how it works though, if I recall correctly there are three pressure points with "ball bearings" holding the sensor in the focal plane at all times. The sensor is free to move left/right, up/down and rotate slightly in the focal plane, the limits being a peg hitting the sides of the rectangular holes you see in the picture.

In this cut away of the K-5 you can actually see two steel balls in the lower part of the right side, with the sensor plate in between.
https://upload.wikimedia.org/wikipedia/commons/2/2e/Flickr_pentax_K5_3_%28CC-BY-SA%29.jpg
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