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02-15-2014, 07:46 PM   #1066
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A few from today's hike


Last edited by bodson; 04-20-2017 at 05:33 AM.
02-15-2014, 08:00 PM - 1 Like   #1067
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Here is a variety shot over the last couple of days since getting my K-3

















02-15-2014, 09:17 PM   #1068
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QuoteOriginally posted by hangman43 Quote
Here is a variety shot over the last couple of days since getting my K-3

















You're not helping me resist temptation to upgrade! Really nice shots!
02-15-2014, 09:48 PM   #1069
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Moon with K3 in AUTO HDR

'Twas the night after the Valentine's Day Full Moon before I remembered, I wanted to test this feature. Shot was made at f/22 1160 ISO 100 using the Sigma Bigma at 500mm and center focused.

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02-16-2014, 03:51 AM - 2 Likes   #1070
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One other shot from Patoka Lake...


02-16-2014, 04:01 AM - 1 Like   #1071
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Grey-Rumped Tree Swift stretching...

K3 + Sigma 500 F4.5

02-16-2014, 04:14 PM - 4 Likes   #1072
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White Corries, Glencoe. smc 15mm Ltd f8, 1/250, ISO 100.


02-16-2014, 10:14 PM - 2 Likes   #1073
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Wow - these photos just get better and better







02-17-2014, 03:55 AM - 1 Like   #1074
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A lovely pair of treeswift

K3 + Sigma 500/F4.5

02-17-2014, 07:38 AM   #1075
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I am really impressed with the shots posted in this thread. Really. But in my world, I have been disappointed with the image quality of the K3 in low light, high ISO photos of moving subjects. Some of my favorite activities involve horseback riders in an arena, dog agility in the same arena and recently youth hockey. I am more than willing to accept my technical limitations. What is difficult to accept is the large amount of noise I am seeing in the shots involving "movement". Here are some shots from the camera. Hopefully exif data stayed with them when I resized. I was using the f2.8 70-200 and f2.8 28.75 Tamron lenses. Comments/expectations below.


arena lighting: this was the set up. White paint underneath, fluorescent lights in the ceiling, reflective material as well.



John 1250: ISO 1250 f3.5 1/160. I would have expected brighter. Using AF so I would have expected sharper but with noticeable noise. This guy was "coasting" towards me at a slow speed.


Bench 3200: ISO 3200. f4.5 1/250. This is what I meant by sharper but with noise. These guys were watching the action, quite immobile. Maybe a clue? No complaints on this one.


Daniel 800: ISO 800. 1/80. f5.6. Slow movement approaching me. It appears as if there is more noise than I would have expected at 1/80 & ISO 800. Also much darker image. Again - this was a youth gliding towards me at a very slow speed.




I seem to consistently see more noise at ISO 800 than I expected. I had tried using custom high ISO noise reduction starting about 1600,. But for these I did turn off high ISO noise reduction, but really don't think that should be a factor until 1200+. I have had the similar issues when shooting through a picture window during the day. Again - my issue is the hoise and lack of sharpness.

Heck - maybe I have champagne taste on a beer budget. Maybe I am looking at all of the high ISO, low noise "stills" and stupidly thinking shots in motion should produce the same. Maybe it is too much camera. This was supposed to be a move up from the K5 which did not exhibit this type of unexplainable behavior.

This has been a problem since day 1. I have tried some of the hints I have read here and on the Pentax K-3 Facebook page. I have read the K-3 is less forgiving than the K-5 line. But really it is quite bothersome seeing the high quality shots here and not being able to reproduce the same. Right now I am quite disappointed and experiencing a big let down from my initial excitement of obtaining the camera.

So - the reason for my post is to invite suggestions. Should I send this to C.R.I.S. to have it checked out?

And to top it off I can't even get the images embedded! Sorry for the links....
02-17-2014, 10:43 AM   #1076
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1) Please tell us if you had expanded AF enabled. This activates the tracking ability of the K-3's AF. If so, there are a few settings that will determine how the tracking behaves.

2) Turn off all in-camera Noise Reduction and see if there is a difference. The K-3 has more aggressive default NR than previous models.

Yes, there is more apparent noise with the K-3 at same ISO than the K-5. Not a problem for raw shooters since it cleans up easily. JPEG shooters will need to adjust in-camera noise reduction to taste. There are several threads here about this.

Jack
02-17-2014, 11:00 AM   #1077
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Thanks for the response, Jack.

I did not have the expanded AF enabled. Just the "9 point zone select". Am I correct in the expanded autofocus is designated by the red/pink tinted selection area?

I used the custom NR but only had it kicking in at 1600 ISO. The quality of the shots at ISO 800 are what disappoint most.

I shoot only in RAW format. These examples in JPG were made to compress the size. I have attached a screen print of the exif settings for the "Daniel" shot. Hopefully I did it correctly so you can see it.

Last edited by RickC; 01-12-2017 at 08:05 PM.
02-17-2014, 02:36 PM - 3 Likes   #1078
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Very slightly tweaked shot from a trip to The National Trust's Erddig Hall in North Wales. K3 18-135 WR


02-17-2014, 03:20 PM - 2 Likes   #1079
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Hi, Rick, At 1/80 s, there will be noticeable motion blur which explains the image softness you are seeing. In this case, you would have been much better off using Expanded AF mode.

1) To enable Expanded AF, you need to select AFC, and one of the three modes - Sel-S, Sel-M or Sel-L (easiest to change these using the Status and Info screens on the back. Note that the small button to the right of the Menu button is the one you need to push to put the K-3 into focus point selection mode). I would recommend experimenting with all of these to get a feel for how they affect your shots.

2) Next, you should decide how you want the AFC to handle both the initial focus acquisition and shutter firing in C3-15, and the focus/shutter firing after the first shot in C3-16. Release Priority means that the shutter will fire whether or not focus has been acquired. This is used mainly by pro sports shooters who will be machine-gunning their shots. The idea is that even though the first frame may be out of focus, the AFC will have likely caught up to focus within the first few shots of the burst. Focus Priority means that the shutter will not fire until focus has been achieved for those who want more control. You will need to try both to see what works best for you.

3) Then you should decide which AF Hold setting you need. This adjusts how quickly AFC reacts to change in focus. The default is Off which means that it will react immediately. The Low, Medium and High settings are meant for those situations when you want to isolate the focus on a subject which may be moving through a confusing foreground or background such as a race car or bird in flight. Delaying the AF reactivity here gives a distinct advantage in these cases.

4) Also, go to setting C4-25 and turn off Catch-in Focus. This will work in opposition to focus tracking if enabled. Catch-in focus is meant for single shot shooting such as macro where you will be moving the whole rig to acquire focus. Not sure why Ricoh did not just code it to automatically turn off CIF when AFC is engaged. I know there will be a howl from those who actually do use AFC and CIF but it causes more problems for many photographers.

Jack
02-17-2014, 08:36 PM - 4 Likes   #1080
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Invested in some waders and waded into this small river in the Olympic National Forest. K3 + DA 15/4 @ f/9, .6sec, ISO-100, Mirror-up IR Remote and Polarizer. The sun fog shot DA 40/2.8 @ f/4, ISO-200, spot meter.
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