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  1. #11
    Senior Member
    Needa's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    Sorry to hear that your 300mm PF has AF problems. As it was preowned any chance you can exchange or get a refund?


    › See More: Refurb 1.7x TC & 300mm PF



  2. #12
    Senior Member
    Whiskeyman's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    Quote Originally Posted by Needa View Post
    Sorry to hear that your 300mm PF has AF problems. As it was preowned any chance you can exchange or get a refund?

    My thoughts, also. Hopefully, it is possible.

    WM
    “If you want to be a better photographer, stand in front of more interesting stuff.” - Jim Richardson

  3. #13
    Staff
    Super Mod
    hark's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    Quote Originally Posted by Needa View Post
    Sorry to hear that your 300mm PF has AF problems. As it was preowned any chance you can exchange or get a refund?
    Quote Originally Posted by Whiskeyman View Post
    My thoughts, also. Hopefully, it is possible.

    WM
    No. I've had it for almost 2.5 years. It didn't have any issues until I removed it along with the 1.7x TC earlier this year. But I do remember finding out the Normal VR had the issue of the image jumping inside the viewfinder. Since I don't use Normal VR, that didn't bother me - but I hadn't checked it when I first got it so only found out about it much later.
    Cindy
    Flickr
    and My 2020 Thread

    Where the Spirit does not work with the hand, there is no art
    -- Leonardo da Vinci



  4. #14
    Senior Member
    Needa's Avatar

    After thought.

    Anyone troubleshooting AF and VR issues should clean all contacts and and mount surfaces as a first step. These contacts supply both information to and from the lens and also the power to perform these operations. I use and old microfiber towel with several drops of deoxit and keep it in a separate labelled bag. Added bonus is how smooth the lenses mount. Also for AF issue a cleaning of the body may be in order.

  5. #15
    Staff
    Super Mod
    hark's Avatar

    Re: After thought.

    Quote Originally Posted by Needa View Post
    Anyone troubleshooting AF and VR issues should clean all contacts and and mount surfaces as a first step. These contacts supply both information to and from the lens and also the power to perform these operations. I use and old microfiber towel with several drops of deoxit and keep it in a separate labelled bag. Added bonus is how smooth the lenses mount. Also for AF issue a cleaning of the body may be in order.
    Thanks - that was one of the first things I did when the issue started to happen. It's a good reminder especially for those who aren't aware.
    Thanks/Like Needa Thanks/liked this post
     
    Cindy
    Flickr
    and My 2020 Thread

    Where the Spirit does not work with the hand, there is no art
    -- Leonardo da Vinci



  6. #16
    Senior Member
    Needa's Avatar

    Re: After thought.

    Quote Originally Posted by hark View Post
    Thanks - that was one of the first things I did when the issue started to happen. It's a good reminder especially for those who aren't aware.
    I thought you would have and that was my intent.

  7. #17
    Senior Member

    Re: Refurb 1.7x TC & 300mm PF

    Cindy, how does it do with the VR turned off and a fast shutter speed?

  8. #18
    Staff
    Super Mod
    hark's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    Quote Originally Posted by Andy W View Post
    Cindy, how does it do with the VR turned off and a fast shutter speed?
    That will be one of the next things I try.
    Cindy
    Flickr
    and My 2020 Thread

    Where the Spirit does not work with the hand, there is no art
    -- Leonardo da Vinci



  9. #19
    Staff
    Super Mod
    hark's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    Refurb 1.7x TC & 300mm PF
    Today I went out with my previous 300mm f/4 AF-S (non-VR) and the refurbished 1.7x TC. I increased my shutter speed since this combo is both longer and a decent amount heavier. Both images were taken from the seat of my SUV.

    Most of the images were pretty good. A couple were slightly soft - but this combo is heavier, and I have a chronic issue with trigger thumb and trigger finger in my right hand. Overall, I am still leaning towards it being the 300mm f/4 PF lens. But I want to narrow down whether it is just the Sport VR or if the AF is also a tad off.

    At least I didn't have to use Shake Reduction which was becoming common with the 300mm PF.

    Refurb 1.7x TC & 300mm PF-_dsc0438-low-res.jpg

    Refurb 1.7x TC & 300mm PF-_dsc0446-low-res.jpg
    Thanks/Like Needa, Roscoe Primrose Thanks/liked this post
     
    Cindy
    Flickr
    and My 2020 Thread

    Where the Spirit does not work with the hand, there is no art
    -- Leonardo da Vinci



  10. #20
    Staff
    Super Mod
    hark's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    The jury is still out on my refurbished 1.7x TC and 300mm f/4 PF lens. Yesterday's outing with the non-VR 300mm coupled with the TC went well but was very heavy for the tendonitis in my hand. So last night I pulled out the 300mm f/4 PF once again. Back when I inspected both the TC and the lens, I cleaned the contacts first by using a rocket blower, then an eraser, then a microfiber cloth. Nothing changed.

    Last night when I pulled out the lens, once again I inspected the contacts. This time there were a few very short pieces of fibers somehow attached to one of the contacts. They must have gotten loose when the lens was removed from the TC. But they weren't completely loose - they were caught around the base of the one contact. Carefully I removed them and became hopeful that maybe something would change. @Needa will be proud! Lol.

    So today I photographed more geese. First couple of images were without VR. All images today had a shutter speed of 1/1600". Not bad on the non-VR pics. Then I switched it to Normal VR. Much to my surprise, the consecutive images didn't jump in the viewfinder like they did every time in the past since I've owned this lens. Wow, that surprised me.

    Then I switched it to Sport VR. Scrutinizing those on my PC, almost every one of them is in focus with just a few being the slightest bit soft (am attributing those to AF-C because I've always had a few that weren't totally sharp). But those slightly soft ones certainly were nothing like I was getting when this problem began. More testing will be done - tomorrow looks to be a decent day weather-wise. Today they called for rain but was only overcast while I was out.

    The real test will be putting my shutter speed back down to 1/1000". Staying hopeful!
    Last edited by hark; 07-31-2020 at 08:51 PM.
    Thanks/Like Needa Thanks/liked this post
     
    Cindy
    Flickr
    and My 2020 Thread

    Where the Spirit does not work with the hand, there is no art
    -- Leonardo da Vinci







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