a loose lens: Nikon D500 with Sigma 150-600 sport. All other lenses work fine. This particular lens has a problem. When my settings are made and I compose my shot, the aperture goes to...

Fred Frank Loc: Roanoke Alabama

Nikon D500 with Sigma 150-600 sport. All other lenses work fine. This particular lens has a problem. When my settings are made and I compose my shot, the aperture goes to 0. If I use my lens hand and twist it to the right I'm able to get my original setting back. During that same time I'm also not able to focus.
No doubt someone has experienced this issue. Can I do something myself to fix the problem, or do I have to take it to get repaired? Thanks, I look forward to your feedback. Fred

kpmac Loc: Ragley, La

I wouldn't trust the lens. It's possible it could damage your camera lens mount.

Brucej67 Loc: Cary, NC

Fred Frank wrote:

Nikon D500 with Sigma 150-600 sport. All other lenses work fine. This particular lens has a problem. When my settings are made and I compose my shot, the aperture goes to 0. If I use my lens hand and twist it to the right I'm able to get my original setting back. During that same time I'm also not able to focus.
No doubt someone has experienced this issue. Can I do something myself to fix the problem, or do I have to take it to get repaired? Thanks, I look forward to your feedback. Fred

What do you mean your aperture goes to zero, there is no such thing, your aperture is your F stop and on that lens the lowest it can go is F5. You also leave out a lot of information as to focal length, camera settings (A P or M), BBF or Shutter.

User ID

Brucej67 wrote:

What do you mean your aperture goes to zero, there is no such thing, your aperture is your F stop and on that lens the lowest it can go is F5. You also leave out a lot of information as to focal length, camera settings (A P or M), BBF or Shutter.

No cogent info is missing. The zero is a common enough occurrence.

The readout goes to zero. I’ve seen this, and can easily provoke it. If I press the shutter anyway, the zero will be shown in the exif. When the zero readout arises on its own a repair is in order.

A handheld large lens user must take care not to accidentally push the lens latch. That is user error ... IOW that is not a need for repair.

Brucej67 Loc: Cary, NC

User ID wrote:

The readout goes to zero. I’ve seen this, and can easily provoke it. If I press the shutter anyway, the zero will be shown in the exiF. When the zero readout arises on its own repair is in order.

Are you talking about reading the EXIF file, what does the camera report it at in the view finder. Is the lens at the latest firmware, also the camera. What mode are you using. What are the lens settings, have you tried different settings.

mwsilvers Loc: Central New Jersey

Fred Frank wrote:

Nikon D500 with Sigma 150-600 sport. All other lenses work fine. This particular lens has a problem. When my settings are made and I compose my shot, the aperture goes to 0. If I use my lens hand and twist it to the right I'm able to get my original setting back. During that same time I'm also not able to focus.
No doubt someone has experienced this issue. Can I do something myself to fix the problem, or do I have to take it to get repaired? Thanks, I look forward to your feedback. Fred

A loose lens is one that is not securely mounted and may move or wobble a bit. Your description indicates nothing about the lens being loose. Further the aperture on that lens can't go, no lens' aperture can. The lens has no control on it to modify the aperture. Are you having a problem with the zoom ring or the focus ring? Have you tried cleaning the contacts on the lens's mount?

User ID

Brucej67 wrote:

Are you talking about reading the EXIF file, what does the camera report it at in the view finder. Is the lens at the latest firmware, also the camera. What mode are you using. What are the lens settings, have you tried different settings.

Pointless questions. Would you ask them if the battery caught fire ? A loose lens is a loose lens. If you’re not unlatching it by how you grip the camera then you need a repair. Mode, FL, camera model ? What for ??? Cuz that’s what all the “wise online experts” are ALWAYS asking ? Polly wants a cracker.

The zero thing needs no expert analysis. It’s a familiar sight to many Nikon users. Are you a Canon user ?

User ID

mwsilvers wrote:

A loose lens is one that is not securely mounted and may move or wobble a bit. Your description indicates nothing about the lens being loose. .............

Reread the opening post. Looseness is definitely described.

Brucej67 Loc: Cary, NC

User ID wrote:

Pointless questions. Would you ask them if the battery caught fire ? A loose lens is a loose lens. If you’re not unlatching it by how you grip the camera then you need a repair. Mode, FL, camera model ? What for ??? Cuz that’s what all the “wise online experts” are ALWAYS asking ? Polly wants a cracker.

The zero thing needs no expert analysis. It’s a familiar sight to many Nikon users. Are you a Canon user ?

Not pointless, if the lens is loose (doesn't couple tight) there is no reason for the rest of the question and information, otherwise he has not provided enough information to determine what is happening. If the camera is taking a picture with that lens it means that the electrical contacts are still working, did the image come out looking like expected, there are more questions than information.

Brucej67 Loc: Cary, NC

User ID wrote:

Pointless questions. Would you ask them if the battery caught fire ? A loose lens is a loose lens. If you’re not unlatching it by how you grip the camera then you need a repair. Mode, FL, camera model ? What for ??? Cuz that’s what all the “wise online experts” are ALWAYS asking ? Polly wants a cracker.

The zero thing needs no expert analysis. It’s a familiar sight to many Nikon users. Are you a Canon user ?

If you bother to read I own 12 Nikon cameras 38 Nikon lenses, and have been a professional photographer since 1965 (making a living one time in photography), now retired. You sound like a beginner or a troll.

Fred Frank Loc: Roanoke Alabama

Well let's see. It's hard at times on this forum to tell when your getting solid feedback or professional sarcasm from someone who just woke up long enough to make up something smart to respond.
I may not have given enough information and don't know all the proper lingo but it also apears some don't completely read the original message.
It is possible to get a 0 reading. It was set at f8 but the lens has some play and I must twist it to my right to get a temporary fix, compose, and take the shot.
That is a pain so I want to fix the issue.
I hope I'm giving enough information. Thank you to those who can who wish to help. If I can't resolve the issue I'll be heading to the shop this week.
The contacts have been cleaned. I'm retired and top mellowed out since my army years to get upset over trivial crap. We have bigger issues to deal with in our lives. Love everyone

Brucej67 Loc: Cary, NC

Fred Frank wrote:

Well let's see. It's hard at times on this forum t... (show quote)

Thank you for clearing that up. Do the pictures come out OK or is that a problem (as a result of the issue)? You say there is play in the lens when mounted on the camera (I to have play not sever) have you checked both the camera mount and the lens mount to find out which is loose (or is it just worn play)? I wish you luck, it is a good combo I use mine, but not as much as the 500 PF.

CO

It's normal for there to be some rotational play. I can take all of my lenses are twist them very slightly CW and CCW when they are mounted. There needs to be some clearance designed in so all lenses can be mounted without a hitch.

I had a Nikon 70-300mm lens that lost contact with the body a couple of times. An error message would popup on the screen. I just loosened the lens a little and clicked it back in place. It reestablished that contact after that.

Brucej67 Loc: Cary, NC

CO wrote:

It's normal for there to be some rotational play. I can take all of my lenses are twist them very slightly CW and CCW when they are mounted. There needs to be some clearance designed in so all lenses can be mounted without a hitch.

I had a Nikon 70-300mm lens that lost contact with the body a couple of times. An error message would popup on the screen. I just loosened the lens a little and clicked it back in place. It reestablished that contact after that.

That is true. Most of my lenses are not tight as they would be harder to mount in changing temperature when separated from the camera.

Fred Frank Loc: Roanoke Alabama

Thanks guys. I'll check everything I can. I see what your saying about "all have some play".