pentax 31mm f1.8 defective?

séamuis · 07-08-2009, 07:50 AM

you do have the lens set to 'A' yes? and as someone else pointed out, the FA series of lenses do not feature the 'quick shift' focus mechanism.

iasonis · 07-08-2009, 05:40 PM

Hi everyone, thank you all for trying to help. I actually decided to bring the lens back. They gave me a replacement 31mm lens and it actually lookes slightly different physically, lens caps and all. I tested it out and I am VERY happy! Here are a few sample images converted from raw to jpeg. I really like this lens now.

zhewie · 07-08-2009, 08:06 PM

Originally posted by iasonis

...

3rd pic iso 400 31mm 1.8 1/6 ...

If you want a sharper picture at a shutter speed of 1/6 s and aperature of 1.8, you will need a tripod. I don't think your in camera shake reduction would overcome settings such as that.

Your latest pictures were taken on a sunny day-- more light will allow the AUTO mode of your camera to increase shutter speed and aperature settings improving the "sharpness" of your shot.

Wheatfield · 07-08-2009, 11:33 PM

If the focus ring is hard to turn, you have bought a damaged lens. Return it and get another one.

Damn Brit · 07-09-2009, 01:20 AM

I have to say this and please don't take offense. I fail to see the logic in buying a K20D followed by a Limited lens and then using the combo in green mode. That's a rather expensive Point and Shoot.

iasonis · 07-09-2009, 03:58 AM

Originally posted by Damn Brit

I have to say this and please don't take offense. I fail to see the logic in buying a K20D followed by a Limited lens and then using the combo in green mode. That's a rather expensive Point and Shoot.

Green to Test. What is the purpose to this post? I allready found out my lens was broken and now I have a new one and everything is peachy. Thanks

Damn Brit · 07-09-2009, 04:00 AM

Originally posted by iasonis

Green to Test. What is the purpose to this post? I allready found out my lens was broken and now I have a new one and everything is peachy. Thanks

Well, in your first thread a few weeks ago, you said you shoot mainly in green mode. Obviously your skill levels have come on in leaps and bounds in such a short time. That's a new one on me, using the green mode to test a lens.
There's no need to be aggressive, that won't get you far.
The purpose of my post was to make what was in my opinion a valid comment. You obviously took it the wrong way, that's your problem not mine.

Last edited by Damn Brit; 07-09-2009 at 04:09 AM.

séamuis · 07-09-2009, 05:03 AM

Originally posted by iasonis

Green to Test. What is the purpose to this post? I allready found out my lens was broken and now I have a new one and everything is peachy. Thanks

I still don't believe it was the lens personally.

Zav · 07-09-2009, 05:48 AM

Originally posted by séamuis

I still don't believe it was the lens personally.

So do I. The 1st lens aperture wasn't stuck @ 1.8 as there were a few shoots @ 2.0 or 3.5.

iasonis · 07-09-2009, 06:13 AM

Look, who really cares what you think? This thread is like a bing commercial, a few good bits of information interjected with a bunch of nonsense

Zav · 07-09-2009, 06:50 AM

So next time, just don't ask us our opinion about your "new shiny mega-billion lens which doesn't work 'cause you don't know how to use it". We were trying to help you...

séamuis · 07-09-2009, 07:13 AM

Originally posted by iasonis

Look, who really cares what you think?

ill be sure to remember that next time you need help with something you bought, but don't know how to use.

Peter Zack · 07-09-2009, 07:17 AM

This has run it's useful course. Closed.

07-08-2009, 05:40 PM	#17
iasonis Junior Member Join Date: Jun 2009 Location: West Harrison, NY Photos: Gallery Posts: 30 Original Poster	Hi everyone, thank you all for trying to help. I actually decided to bring the lens back. They gave me a replacement 31mm lens and it actually lookes slightly different physically, lens caps and all. I tested it out and I am VERY happy! Here are a few sample images converted from raw to jpeg. I really like this lens now. Attached Images Last edited by iasonis; 07-08-2009 at 07:27 PM.

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07-08-2009, 07:50 AM	#16
séamuis Banned Join Date: Oct 2007 Location: Savannah, U.S./Baguio City, P.H. Posts: 5,979	you do have the lens set to 'A' yes? and as someone else pointed out, the FA series of lenses do not feature the 'quick shift' focus mechanism.

07-08-2009, 08:06 PM	#18
zhewie Inactive Account Join Date: Jul 2008 Location: Toronto Posts: 37	Originally posted by iasonis ... 3rd pic iso 400 31mm 1.8 1/6 ... If you want a sharper picture at a shutter speed of 1/6 s and aperature of 1.8, you will need a tripod. I don't think your in camera shake reduction would overcome settings such as that. Your latest pictures were taken on a sunny day-- more light will allow the AUTO mode of your camera to increase shutter speed and aperature settings improving the "sharpness" of your shot.

07-08-2009, 11:33 PM	#19
Wheatfield Moderator Join Date: Apr 2008 Location: The wheatfields of Canada Posts: 15,986	If the focus ring is hard to turn, you have bought a damaged lens. Return it and get another one.

07-09-2009, 01:20 AM	#20
Damn Brit Guest	I have to say this and please don't take offense. I fail to see the logic in buying a K20D followed by a Limited lens and then using the combo in green mode. That's a rather expensive Point and Shoot.

07-09-2009, 03:58 AM	#21
iasonis Junior Member Join Date: Jun 2009 Location: West Harrison, NY Photos: Gallery Posts: 30 Original Poster	Originally posted by Damn Brit I have to say this and please don't take offense. I fail to see the logic in buying a K20D followed by a Limited lens and then using the combo in green mode. That's a rather expensive Point and Shoot. Green to Test. What is the purpose to this post? I allready found out my lens was broken and now I have a new one and everything is peachy. Thanks

07-09-2009, 04:00 AM	#22
Damn Brit Guest	Originally posted by iasonis Green to Test. What is the purpose to this post? I allready found out my lens was broken and now I have a new one and everything is peachy. Thanks Well, in your first thread a few weeks ago, you said you shoot mainly in green mode. Obviously your skill levels have come on in leaps and bounds in such a short time. That's a new one on me, using the green mode to test a lens. There's no need to be aggressive, that won't get you far. The purpose of my post was to make what was in my opinion a valid comment. You obviously took it the wrong way, that's your problem not mine. Last edited by Damn Brit; 07-09-2009 at 04:09 AM.

07-09-2009, 05:03 AM	#23
séamuis Banned Join Date: Oct 2007 Location: Savannah, U.S./Baguio City, P.H. Posts: 5,979	Originally posted by iasonis Green to Test. What is the purpose to this post? I allready found out my lens was broken and now I have a new one and everything is peachy. Thanks I still don't believe it was the lens personally.

07-09-2009, 05:48 AM	#24
Zav Pentaxian Join Date: Feb 2009 Photos: Gallery Posts: 1,371	Originally posted by séamuis I still don't believe it was the lens personally. So do I. The 1st lens aperture wasn't stuck @ 1.8 as there were a few shoots @ 2.0 or 3.5.

07-09-2009, 06:13 AM	#25
iasonis Junior Member Join Date: Jun 2009 Location: West Harrison, NY Photos: Gallery Posts: 30 Original Poster	Look, who really cares what you think? This thread is like a bing commercial, a few good bits of information interjected with a bunch of nonsense

07-09-2009, 06:50 AM	#26
Zav Pentaxian Join Date: Feb 2009 Photos: Gallery Posts: 1,371	So next time, just don't ask us our opinion about your "new shiny mega-billion lens which doesn't work 'cause you don't know how to use it". We were trying to help you...

07-09-2009, 07:13 AM	#27
séamuis Banned Join Date: Oct 2007 Location: Savannah, U.S./Baguio City, P.H. Posts: 5,979	Originally posted by iasonis Look, who really cares what you think? ill be sure to remember that next time you need help with something you bought, but don't know how to use.

07-09-2009, 07:17 AM	#28
Peter Zack Pentaxian Moderator Emeritus Join Date: May 2007 Location: Edmonton Alberta, Canada Photos: Gallery \| Albums Posts: 10,643	This has run it's useful course. Closed.