No manual focus on Sigma 50-500. !!!!!!.

peletonpete · 10-19-2013, 02:51 AM

I have bought a second hand model and I think it is the older model with the Sigma brand name and lens type printed in white. Very sharp optics indeed. The is no AF/Manual switch on this model. It focuses automatically well but can't be overridden. The focus ring turns but nothing happens. Is it broken or have I got a non manual spec'd model? I also have the Sigma 50-150 2.8 where the focus ring overrides autofocus at any time without AF/Manual switches. Can anybody help.

Pete

Adam · 10-19-2013, 02:57 AM

There's always the AF/MF switch on your camera

peletonpete · 10-19-2013, 03:44 AM

Thanks Adam,the AF/Manual button on my camera does not work this lens when turned to "Manual" The focus ring spins beautifully but still does nix

Regards Pete

**savoche** · 10-20-2013, 04:12 AM

Welcome to the forums!

Sounds strange that you can't focus manually even with the camera focus switch set to MF, but I don't know the 50-500. You should try posting in the Troubleshooting or Lens Discussion section so that more people might see you post.

Cheers!

JinDesu · 10-20-2013, 06:42 AM

Is your lens like this version? Is the focus ring towards the camera, and the zoom away?

If so, your focus ring can be pushed away from the camera to put it into MF mode. It should have a slight click when pushed. That is what I suspect your lens does (My Tamron 70-200 has the same feature).

I suspect this because in the image of the older version of the 50-500, the right side above the focus ring has a line with blurry text that looks like "MF"

Bluesmachine · 11-24-2013, 08:24 AM

Ooo, sorry to slightly jump all over this (hello by the way, first post

) but do you happen to know how much that lens in the image above is worth, second hand? The reason I've signed up here is because I've been searching for 2 weeks on and off, trying to find out what the lens is worth. A chap in work sadly died not long ago, leaving all his gear to his niece. She isn't into photography and I haven't used Pentax since my dad used to use them a LONG time ago, so I'm trying to value it for her, but I haven't been able to locate a single lens like the one above. Everything I've seen so far seems to be a new model that doesn't have that aperture ring at the base, and even a Sigma rep wasn't sure what the lens was from the serial number I gave them.

Incidentally, I think the previous post has answered the question as I had the same problem. I had to test this lens on a K-x so was completely unfamiliar with the camera settings and assumed I'd done something wrong, but it's got a slide lock on it to change from manual to auto, and it's got a manual/AF switch on the side, plus a lock further up the lens again. It's a strange design compared to the lenses I'm used to (I use Canon normally).

**crewl1** · 11-24-2013, 08:50 AM

Originally posted by peletonpete

I have bought a second hand model and I think it is the older model with the Sigma brand name and lens type printed in white. Very sharp optics indeed. The is no AF/Manual switch on this model. It focuses automatically well but can't be overridden. The focus ring turns but nothing happens. Is it broken or have I got a non manual spec'd model? I also have the Sigma 50-150 2.8 where the focus ring overrides autofocus at any time without AF/Manual switches. Can anybody help.

Pete

In the lens review section about this lens I see that someone wrote:
. It has a focus ring that is disengaged until it is pulled back toward the mount, where it then allows manual focus (camera autofocus intended to be disengaged when doing this).

Read more at: Sigma 50-500mm F4-6.3 APO EX DG Lens Reviews - Sigma Lenses - Pentax Lens Review Database

**crewl1** · 11-24-2013, 08:51 AM

Originally posted by Bluesmachine

Ooo, sorry to slightly jump all over this (hello by the way, first post

) but do you happen to know how much that lens in the image above is worth, second hand? The reason I've signed up here is because I've been searching for 2 weeks on and off, trying to find out what the lens is worth. A chap in work sadly died not long ago, leaving all his gear to his niece. She isn't into photography and I haven't used Pentax since my dad used to use them a LONG time ago, so I'm trying to value it for her, but I haven't been able to locate a single lens like the one above. Everything I've seen so far seems to be a new model that doesn't have that aperture ring at the base, and even a Sigma rep wasn't sure what the lens was from the serial number I gave them.

Incidentally, I think the previous post has answered the question as I had the same problem. I had to test this lens on a K-x so was completely unfamiliar with the camera settings and assumed I'd done something wrong, but it's got a slide lock on it to change from manual to auto, and it's got a manual/AF switch on the side, plus a lock further up the lens again. It's a strange design compared to the lenses I'm used to (I use Canon normally).

In the lens reviews referenced above you can see what the lenses sell for.

**Kerrowdown** · 11-24-2013, 12:29 PM

I no nothing about your lens, but you may already have the answer, either pushing or clicking the focus ring to engage manual focus, anyway welcome to the forum from me.

10-19-2013, 02:51 AM	#1
peletonpete New Member Join Date: Oct 2013 Posts: 2	No manual focus on Sigma 50-500. !!!!!!. I have bought a second hand model and I think it is the older model with the Sigma brand name and lens type printed in white. Very sharp optics indeed. The is no AF/Manual switch on this model. It focuses automatically well but can't be overridden. The focus ring turns but nothing happens. Is it broken or have I got a non manual spec'd model? I also have the Sigma 50-150 2.8 where the focus ring overrides autofocus at any time without AF/Manual switches. Can anybody help. Pete

10-19-2013, 02:57 AM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,608	There's always the AF/MF switch on your camera Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

10-19-2013, 03:44 AM	#3
peletonpete New Member Join Date: Oct 2013 Posts: 2 Original Poster	Busted Sigma 50-500 Thanks Adam,the AF/Manual button on my camera does not work this lens when turned to "Manual" The focus ring spins beautifully but still does nix Regards Pete

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10-20-2013, 04:12 AM	#4
savoche Master of the obvious Join Date: Jun 2011 Location: Lowlands of Norway Posts: 18,311	Welcome to the forums! Sounds strange that you can't focus manually even with the camera focus switch set to MF, but I don't know the 50-500. You should try posting in the Troubleshooting or Lens Discussion section so that more people might see you post. Cheers!

10-20-2013, 06:42 AM	#5
JinDesu Veteran Member Join Date: Jun 2011 Location: New York City Photos: Gallery Posts: 5,638	Is your lens like this version? Is the focus ring towards the camera, and the zoom away? If so, your focus ring can be pushed away from the camera to put it into MF mode. It should have a slight click when pushed. That is what I suspect your lens does (My Tamron 70-200 has the same feature). I suspect this because in the image of the older version of the 50-500, the right side above the focus ring has a line with blurry text that looks like "MF"

11-24-2013, 08:24 AM	#6
Bluesmachine New Member Join Date: Nov 2013 Posts: 1	Ooo, sorry to slightly jump all over this (hello by the way, first post ) but do you happen to know how much that lens in the image above is worth, second hand? The reason I've signed up here is because I've been searching for 2 weeks on and off, trying to find out what the lens is worth. A chap in work sadly died not long ago, leaving all his gear to his niece. She isn't into photography and I haven't used Pentax since my dad used to use them a LONG time ago, so I'm trying to value it for her, but I haven't been able to locate a single lens like the one above. Everything I've seen so far seems to be a new model that doesn't have that aperture ring at the base, and even a Sigma rep wasn't sure what the lens was from the serial number I gave them. Incidentally, I think the previous post has answered the question as I had the same problem. I had to test this lens on a K-x so was completely unfamiliar with the camera settings and assumed I'd done something wrong, but it's got a slide lock on it to change from manual to auto, and it's got a manual/AF switch on the side, plus a lock further up the lens again. It's a strange design compared to the lenses I'm used to (I use Canon normally).

11-24-2013, 08:50 AM	#7
crewl1 Site Supporter Join Date: Jul 2010 Location: Los Angeles, CA Photos: Gallery \| Albums Posts: 9,807	Originally posted by peletonpete I have bought a second hand model and I think it is the older model with the Sigma brand name and lens type printed in white. Very sharp optics indeed. The is no AF/Manual switch on this model. It focuses automatically well but can't be overridden. The focus ring turns but nothing happens. Is it broken or have I got a non manual spec'd model? I also have the Sigma 50-150 2.8 where the focus ring overrides autofocus at any time without AF/Manual switches. Can anybody help. Pete In the lens review section about this lens I see that someone wrote: . It has a focus ring that is disengaged until it is pulled back toward the mount, where it then allows manual focus (camera autofocus intended to be disengaged when doing this). Read more at: Sigma 50-500mm F4-6.3 APO EX DG Lens Reviews - Sigma Lenses - Pentax Lens Review Database

11-24-2013, 08:51 AM	#8
crewl1 Site Supporter Join Date: Jul 2010 Location: Los Angeles, CA Photos: Gallery \| Albums Posts: 9,807	Originally posted by Bluesmachine Ooo, sorry to slightly jump all over this (hello by the way, first post ) but do you happen to know how much that lens in the image above is worth, second hand? The reason I've signed up here is because I've been searching for 2 weeks on and off, trying to find out what the lens is worth. A chap in work sadly died not long ago, leaving all his gear to his niece. She isn't into photography and I haven't used Pentax since my dad used to use them a LONG time ago, so I'm trying to value it for her, but I haven't been able to locate a single lens like the one above. Everything I've seen so far seems to be a new model that doesn't have that aperture ring at the base, and even a Sigma rep wasn't sure what the lens was from the serial number I gave them. Incidentally, I think the previous post has answered the question as I had the same problem. I had to test this lens on a K-x so was completely unfamiliar with the camera settings and assumed I'd done something wrong, but it's got a slide lock on it to change from manual to auto, and it's got a manual/AF switch on the side, plus a lock further up the lens again. It's a strange design compared to the lenses I'm used to (I use Canon normally). In the lens reviews referenced above you can see what the lenses sell for.

11-24-2013, 12:29 PM	#9
Kerrowdown PEG Moderator Join Date: Aug 2008 Location: Highlands of Scotland... "Hold Infinity in the palm of your hand" - William Blake Photos: Gallery Posts: 57,863	I no nothing about your lens, but you may already have the answer, either pushing or clicking the focus ring to engage manual focus, anyway welcome to the forum from me.