SIGMA 10-20mm CLUB

ProfHankD · 04-09-2012, 05:42 AM

I know this "club" has been inactive for quite a while, but I've got a problem and wonder if others have seen it too.

My Sigma 10-20mm f/4-5.6 worked perfectly until it suddenly stopped allowing the focus to go closer than the 3 foot setting.
It feels like there's a hard stop there now.
The lens wasn't dropped or abused and there is no roughness... it just seems to have a stop around 3 feet.
It looks like focus is messed-up within its range too, so I'm wondering if this is a floating element off its track or somesuch...?

My lens is actually in Sony AF mount, but I think the Pentax mount one has the same focus mechanism.

kengoh · 04-09-2012, 07:56 AM - **1 Like**

Some shots from the recent holidays at the Northern part of China - Tianjin

jswillems · 04-09-2012, 09:25 PM

As always, AMAZING work in this thread! I finally got out and had a chance to use mine the other day to shoot the sunset. Here's one of my favorites:

**Tamia** · 04-10-2012, 07:14 PM

Originally posted by ProfHankD

I know this "club" has been inactive for quite a while, but I've got a problem and wonder if others have seen it too.

My Sigma 10-20mm f/4-5.6 worked perfectly until it suddenly stopped allowing the focus to go closer than the 3 foot setting.
It feels like there's a hard stop there now.
The lens wasn't dropped or abused and there is no roughness... it just seems to have a stop around 3 feet.
It looks like focus is messed-up within its range too, so I'm wondering if this is a floating element off its track or somesuch...?

My lens is actually in Sony AF mount, but I think the Pentax mount one has the same focus mechanism.

Sorry to hear you are having this problem. I've never experienced this with my Sigma, but long ago had a lens which had focusing problems because I had a bit of grit in the mechanism, picked up while shooting in the field. Is it possible that you got a piece of grit in the works that provides a stop?

You might want to post your query as a new thread in the Pentax SLR Lens Discussion to get a wider viewing and perhaps an answer. Good luck!

**Tamia** · 04-10-2012, 07:15 PM

Beautiful shots as always, Ken!

Josh, I really like the crop on yours. Lovely!

**Tamia** · 04-10-2012, 07:26 PM - **2 Likes**

Originally posted by Jewelltrail

Hey there Tamia--I haven't been in the ADKs since Foliage time of last year, so this is a real treat for me--thank you! I probably will not make it up there again until this coming foliage season, so PLEASE keep posting when you can. I've always loved your work! Best!

JT

Thanks much, JT! Some shots from the 'Dacks for you below.

Originally posted by mikeSF

ok, and your color shots aint shabby either, i LOVE "Tributary"! the light and comp are incomparable.

Thanks very much, Mike!

Originally posted by mikeSF

here's one at 16mm.

Riverbank

This is really beautiful. I love how the wet sand sheen and reflects the light.

For JT...

Touch-Me-Not Shot last year in May or June. The jewelweed flowers haven't emerged yet but when they do, they'll be brilliant orange dots in this field of green.

Two Puddles Got the focus off a bit on this one. Should have focused on the near puddle but I like the color contrast.

Lowlight Hillside Shot last fall late in the day.

Deadwood Pool I love that snag and how it reflects in the pool. Shot from the same spot as the previous picture, but excluding the hillside.

I should note that I didn't push the saturation on these photos. They're true to the colors I saw. The white on the rocks comes from dried out old algae that formed during spring runoff.

**Tamia** · 04-10-2012, 07:27 PM

Originally posted by Ivor K Ecks

I have not had the chance to use this lens much this year, but here are a few of my latest.

These are absolutely beautiful, Ivor!

jswillems · 04-10-2012, 09:51 PM

Originally posted by Tamia

Josh, I really like the crop on yours. Lovely!

Thanks!

digitalCG · 04-11-2012, 12:02 AM - **3 Likes**

Some excellent images posted in here since my last visit, great work guys.

Re-acquainted myself with the Sigma 10-20 on a recent short break to Mallorca by making a few touristy panos...

Circular interior courtyard of Bellver Castle:

Palma's iconic cathedral from Parc de la Mer, just after sunset:

Placa Major, Pollenca, full 360 pano with mini-planet treatment.

kengoh · 04-11-2012, 11:52 AM

Originally posted by Tamia

Beautiful shots as always, Ken!

Josh, I really like the crop on yours. Lovely!

Thanks Tamia, I like your Deadwood Pool, very nice.

kengoh · 04-11-2012, 11:53 AM

Originally posted by digitalCG

Some excellent images posted in here since my last visit, great work guys.

Re-acquainted myself with the Sigma 10-20 on a recent short break to Mallorca by making a few touristy panos...

Circular interior courtyard of Bellver Castle:

Palma's iconic cathedral from Parc de la Mer, just after sunset:

Placa Major, Pollenca, full 360 pano with mini-planet treatment.

digitalCG, I like your last pic, very nicely done.

kengoh · 04-11-2012, 11:55 AM - **1 Like**

2 more pics shot from Tianjin, Northern China during the boat cruise.

ajaxmgr · 04-12-2012, 08:39 AM - **1 Like**

This was taken Easter Morning. I apologize, but I don't have the settings right now.

**Tamia** · 04-13-2012, 04:42 AM

Originally posted by kengoh

Thanks Tamia, I like your Deadwood Pool, very nice.

Thanks, Ken. That pool is one of my favorite places.

**Tamia** · 04-13-2012, 04:46 AM

Lovely picture with pretty flares, ajaxmgr.

04-09-2012, 05:42 AM	#2131
ProfHankD Junior Member Join Date: Aug 2009 Location: Lexington, KY Photos: Gallery \| Albums Posts: 30	My Sigma broke! I know this "club" has been inactive for quite a while, but I've got a problem and wonder if others have seen it too. My Sigma 10-20mm f/4-5.6 worked perfectly until it suddenly stopped allowing the focus to go closer than the 3 foot setting. It feels like there's a hard stop there now. The lens wasn't dropped or abused and there is no roughness... it just seems to have a stop around 3 feet. It looks like focus is messed-up within its range too, so I'm wondering if this is a floating element off its track or somesuch...? My lens is actually in Sony AF mount, but I think the Pentax mount one has the same focus mechanism.

04-12-2012, 08:39 AM - 1 Like	#2143
ajaxmgr Forum Member Join Date: Apr 2011 Posts: 54	Fred Hartman Bridge Houston Tx This was taken Easter Morning. I apologize, but I don't have the settings right now. Attached Images

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04-09-2012, 07:56 AM - 1 Like	#2132
kengoh Pentaxian Join Date: Oct 2010 Location: Singapore Photos: Gallery \| Albums Posts: 2,787	Some shots from the recent holidays at the Northern part of China - Tianjin

04-09-2012, 09:25 PM	#2133
jswillems Forum Member Join Date: Jan 2009 Location: Los Osos, CA Photos: Gallery Posts: 90	As always, AMAZING work in this thread! I finally got out and had a chance to use mine the other day to shoot the sunset. Here's one of my favorites:

04-10-2012, 07:14 PM	#2134
Tamia Site Supporter Join Date: Dec 2009 Location: Here, there, and everywhere. Photos: Gallery \| Albums Posts: 4,384	Originally posted by ProfHankD I know this "club" has been inactive for quite a while, but I've got a problem and wonder if others have seen it too. My Sigma 10-20mm f/4-5.6 worked perfectly until it suddenly stopped allowing the focus to go closer than the 3 foot setting. It feels like there's a hard stop there now. The lens wasn't dropped or abused and there is no roughness... it just seems to have a stop around 3 feet. It looks like focus is messed-up within its range too, so I'm wondering if this is a floating element off its track or somesuch...? My lens is actually in Sony AF mount, but I think the Pentax mount one has the same focus mechanism. Sorry to hear you are having this problem. I've never experienced this with my Sigma, but long ago had a lens which had focusing problems because I had a bit of grit in the mechanism, picked up while shooting in the field. Is it possible that you got a piece of grit in the works that provides a stop? You might want to post your query as a new thread in the Pentax SLR Lens Discussion to get a wider viewing and perhaps an answer. Good luck!

04-10-2012, 07:15 PM	#2135
Tamia Site Supporter Join Date: Dec 2009 Location: Here, there, and everywhere. Photos: Gallery \| Albums Posts: 4,384	Beautiful shots as always, Ken! Josh, I really like the crop on yours. Lovely!

04-10-2012, 07:26 PM - 2 Likes	#2136
Tamia Site Supporter Join Date: Dec 2009 Location: Here, there, and everywhere. Photos: Gallery \| Albums Posts: 4,384	Originally posted by Jewelltrail Hey there Tamia--I haven't been in the ADKs since Foliage time of last year, so this is a real treat for me--thank you! I probably will not make it up there again until this coming foliage season, so PLEASE keep posting when you can. I've always loved your work! Best! JT Thanks much, JT! Some shots from the 'Dacks for you below. Originally posted by mikeSF ok, and your color shots aint shabby either, i LOVE "Tributary"! the light and comp are incomparable. Thanks very much, Mike! Originally posted by mikeSF here's one at 16mm. Riverbank This is really beautiful. I love how the wet sand sheen and reflects the light. For JT... Touch-Me-Not Shot last year in May or June. The jewelweed flowers haven't emerged yet but when they do, they'll be brilliant orange dots in this field of green. Two Puddles Got the focus off a bit on this one. Should have focused on the near puddle but I like the color contrast. Lowlight Hillside Shot last fall late in the day. Deadwood Pool I love that snag and how it reflects in the pool. Shot from the same spot as the previous picture, but excluding the hillside. I should note that I didn't push the saturation on these photos. They're true to the colors I saw. The white on the rocks comes from dried out old algae that formed during spring runoff.

04-10-2012, 07:27 PM	#2137
Tamia Site Supporter Join Date: Dec 2009 Location: Here, there, and everywhere. Photos: Gallery \| Albums Posts: 4,384	Originally posted by Ivor K Ecks I have not had the chance to use this lens much this year, but here are a few of my latest. These are absolutely beautiful, Ivor!

04-10-2012, 09:51 PM	#2138
jswillems Forum Member Join Date: Jan 2009 Location: Los Osos, CA Photos: Gallery Posts: 90	Originally posted by Tamia Josh, I really like the crop on yours. Lovely! Thanks!

04-11-2012, 12:02 AM - 3 Likes	#2139
digitalCG Senior Member Join Date: Sep 2009 Photos: Gallery Posts: 249	Some excellent images posted in here since my last visit, great work guys. Re-acquainted myself with the Sigma 10-20 on a recent short break to Mallorca by making a few touristy panos... Circular interior courtyard of Bellver Castle: Palma's iconic cathedral from Parc de la Mer, just after sunset: Placa Major, Pollenca, full 360 pano with mini-planet treatment.

04-11-2012, 11:52 AM	#2140
kengoh Pentaxian Join Date: Oct 2010 Location: Singapore Photos: Gallery \| Albums Posts: 2,787	Originally posted by Tamia Beautiful shots as always, Ken! Josh, I really like the crop on yours. Lovely! Thanks Tamia, I like your Deadwood Pool, very nice.

04-11-2012, 11:53 AM	#2141
kengoh Pentaxian Join Date: Oct 2010 Location: Singapore Photos: Gallery \| Albums Posts: 2,787	Originally posted by digitalCG Some excellent images posted in here since my last visit, great work guys. Re-acquainted myself with the Sigma 10-20 on a recent short break to Mallorca by making a few touristy panos... Circular interior courtyard of Bellver Castle: Palma's iconic cathedral from Parc de la Mer, just after sunset: Placa Major, Pollenca, full 360 pano with mini-planet treatment. digitalCG, I like your last pic, very nicely done.

04-11-2012, 11:55 AM - 1 Like	#2142
kengoh Pentaxian Join Date: Oct 2010 Location: Singapore Photos: Gallery \| Albums Posts: 2,787	2 more pics shot from Tianjin, Northern China during the boat cruise.

04-13-2012, 04:42 AM	#2144
Tamia Site Supporter Join Date: Dec 2009 Location: Here, there, and everywhere. Photos: Gallery \| Albums Posts: 4,384	Originally posted by kengoh Thanks Tamia, I like your Deadwood Pool, very nice. Thanks, Ken. That pool is one of my favorite places.

04-13-2012, 04:46 AM	#2145
Tamia Site Supporter Join Date: Dec 2009 Location: Here, there, and everywhere. Photos: Gallery \| Albums Posts: 4,384	Lovely picture with pretty flares, ajaxmgr.