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Forum: Troubleshooting and Beginner Help
10-06-2015, 03:22 PM
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It has occurred both when i'm using tripod, hand-holding freely, and pressing it against my face. I'm pretty sure it's the dreaded K-30/K-50 aperture issue at this point since the problem only occurs with auto- lenses.
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Forum: Troubleshooting and Beginner Help
09-22-2015, 06:11 AM
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I'm curious - how is this different than the test above? I was able to show that the exposure was the same at f/4 and f/29, essentially.
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Forum: Troubleshooting and Beginner Help
09-21-2015, 04:44 PM
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Here are the results of a test with both my 50mm f/2 (a 30 year old lens) and with the 18-55 kit lens: https://www.flickr.com/photos/newarchivist/albums/72157658522799428
It's not a spot metering issue, I don't believe. a) this test was run with matrix metering and b) the first album contains photos that were made with both spot and matrix. In auto mode, it seems to give a "good" metering value but then results in a way underexposed photo.
With the above test, I tried to keep the variables in this test down to shutter and aperture, keeping ISO at constant. I also kept the K-50 in matrix metering with the kit lens. I think it automatically goes to spot with the old manual lens(?). A few potentials quirks. First was that the kit lens shots were made at 35mm and the prime lens, of course, at 50mm. Secondly, I shot the photos in RAW and then had the camera convert them to JPEG. Finally, I was only able to get to f/22 on the prime, while at 35mm the kit lens was able to drop to f/29. Still, I think the evidence is clear that the aperture portal is not responding properly.
As aleonx3 and Adam noted, this is likely an aperture drive mechanism issue. After a lot of searching today, this seems to be a common K-30 and K-50 issue. Do any of you all know if Pentax/Ricoh have addressed this in any form? Other than a service request, do you all have suggestions?
Thank you all!
//edit: I am now seeing several threads from the past few days regarding similar issues in K-50s, K-30s, and K-500s. Damn.
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Forum: Troubleshooting and Beginner Help
09-20-2015, 05:47 PM
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Sorry I wasn't clear. It was broad daylight, so I shouldn't need to have a super slow shutter, high ISO, or a wide aperture. I'm cooking dinner at the moment; when I return from that I'll get a couple photos up.
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Forum: Troubleshooting and Beginner Help
09-20-2015, 05:34 PM
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Howdy folks!
I took my camera out today for some photo-making after a month or so. I took a photograph in aperture priority mode and it came out almost pitch black. It seemed to be metering correctly through the OVF - so a bright day should have been fine with f/8.0 at 1/100s shutter speed, with an ISO of 400-800.
Note - this issue occurred both with my 18-55 and my 55-200.
I was able to get photos to come out via live view, but I had to bump the ISO way high, keep the lens wide open, and slow the shutter. This seems to indicate a sensor metering issue, but I don't know where to start. My google-fu is weak on this issue.
Thoughts? What questions should I be asking?
I'll upload some photos later with examples of what's going on.
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Forum: Flashes, Lighting, and Studio
09-24-2014, 12:05 PM
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Hey all!
Thanks for the feedback and sorry for my delays in response. Life gets in the way of fun, sometimes!
I ended up getting a Cactus V5 because it was comparable to getting a TTL cord. I like the idea of using off-camera flash in more manual mode rather than relying on TTL, since I would have more control over the exposure. I have found that the AF200FG isn't terrible off-camera. It's not great, but it's far better not on the camera. The decision for the V5 was based not on the AF200FG but future off-camera usage and the fact that I knicked some older (higher-voltage) flash units from family who don't shoot anymore.
I have been playing around with triggers and it adds a lot of versatility. I took the following series by bouncing the AF200FG off the wall in a dimly lit room.
https://www.flickr.com/photos/newarchivist/sets/72157647908223226
Again, thank you for all of your help!
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Forum: Flashes, Lighting, and Studio
08-15-2014, 02:09 PM
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Thanks! This definitely helps.
I just need a controller at this point for my flash experimentation. I can't budget money for another flash at the moment, so I will make do with the limited (Full only) manual capabilities of the AF200FG.
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Forum: Flashes, Lighting, and Studio
08-15-2014, 09:09 AM
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Howdy folks!
As you can see, I am new here - but not totally new to photography. I've been shooting with various equipment for years, and have finally entered the dSLR world with the K-50, which came with an AF-200FG.
As you all know, it is a rather limited flash. I am looking to make it more versatile for portraiture by using it in manual mode off-camera.
The options I see are:- TTL Cable, like Vello Universal Duo
- Universal hotshoe translators with PC sync cables
- Slave Hot Shoe
- Wireless Radio, like Cactus v5
I am pretty sure the first three would work. More elegant, to me, would be using a wireless radio. The Cactus v5, for example, mentioned other Pentax flashes, but not the AF-200. Is there any reason the AF-200FG wouldn't work, as long as I am doing everything manually and just want to trigger the flash?
Thanks!
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