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  1. #21
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    hark's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    Refurb 1.7x TC & 300mm PF
    Pics or it didn't happen.

    Here is one of the last images I shot this afternoon with Sport VR which is my preferred choice of VR. Cropped slightly. I was reasonably close - hence the slight crop. But being close means there is a shallower Dof - so definitely a good test. The only sharpening done was the default of 40 in Camera RAW. I did my usual post processing: Camera RAW, PCC to remove any unwanted spots, then The NIK Collection (EFEX Pro).

    But as I mentioned in my last post, lowering my shutter speed back to 1/1000" will be the real test.

    Refurb 1.7x TC & 300mm PF-_dsc0487-low-res.jpg


    › See More: Refurb 1.7x TC & 300mm PF
    Cindy
    Flickr
    and My 2020 Thread

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





  2. #22
    Senior Member
    Needa's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    Fingers crossed.
    Thanks/Like hark Thanks/liked this post
     

  3. #23
    Staff
    Super Mod
    hark's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    Ugh. This problem still exists. I took some photos of ducks at a nature center - shutter speed as slow as 1/800" with excellent results using both Normal VR and Sport VR. Then I went elsewhere and came across a vulture. Several of those vulture images are heavily front focusing while a few are fine. It makes no sense. But the ones that heavily front focused were in Sport VR as were all of the vulture images. So not sure if Sport VR is the issue; however, I don't think that problem has occurred with Normal VR.

    Plus yesterday I mentioned how the Normal VR always had a tendency to make the image jump in the viewfinder - you can go to this post and view images 4, 5, and 6 to see how the duck wasn't in the same position for consecutive images:

    https://nikonites.com/other-photogra...tml#post739587

    But yesterday (after having removed stuck cotton fibers from a lens contact), Normal VR worked fine. Yet today it was acting up, too. This is such a pain to diagnose. And I haven't removed the lens or TC since removing the cotton fibers.
    Cindy
    Flickr
    and My 2020 Thread

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



  4. #24
    Staff
    Super Mod
    hark's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    Refurb 1.7x TC & 300mm PF
    Here are a few samples from this afternoon. No Shake Reduction was utilized. With all these, the focus point was on their faces - and possibly recomposed once focus was achieved (and yes, the BBF was first locked then let go to recompose).

    These first two were pretty good as far as sharpness goes. Subject here is somewhat dark with low contrast. No complaints on this one. Very slight crop from the original image.

    Refurb 1.7x TC & 300mm PF-_dsc0508-low-res.jpg

    Another subject that is somewhat dark with low contrast. Still no complaints. A little more of a crop was done here. Faster shutter speed with wide open (f/6.7 is wide open with this TC).

    Refurb 1.7x TC & 300mm PF-_dsc0539-low-res.jpg

    For some reason, the following image looks to have back-focused. When I support the camera/lens, I try to hold it at the tripod foot or on the hood without touching the focus ring. This back-focusing is new for some reason. Simply used the jpeg SOOC and resized for the forum. No additional editing was done. No cropping.

    Refurb 1.7x TC & 300mm PF-_dsc0525-low-res.jpg

    Quite often when it misses focus, it seems to front-focus like in this image. Simply used the jpeg SOOC and resized for the forum. No additional editing was done. No cropping. Any comments and/or suggestions will be appreciated. I tried to maintain a consistent shutter speed (one that I tend to use regularly) when possible.

    Refurb 1.7x TC & 300mm PF-_dsc0527-low-res.jpg
    Last edited by hark; 08-01-2020 at 10:52 PM.
    Cindy
    Flickr
    and My 2020 Thread

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



  5. #25
    Senior Member
    Needa's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    Only one thing left an exorcism.

    My mind keeps going back to everything was ok until you removed the lens and TC. I have nothing helpful though.

  6. #26
    Staff
    Super Mod
    hark's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    Quote Originally Posted by Needa View Post
    Only one thing left an exorcism.

    My mind keeps going back to everything was ok until you removed the lens and TC. I have nothing helpful though.
    That's when it all started. I removed the lens with TC attached while the camera was turned on and the VR was still set to Sport. I am pretty sure the camera was in standby, but I always try to remove lenses when the camera is off. That was simply an oversight on my part. I'm just trying to narrow down whether it is solely the Sport VR (although Normal VR has had its own issues ever since I purchased the lens used). But for some reason, the AF is also affected at times. That too wasn't an issue even for photos lacking contrast. Yet I can take low contrast images of ducks and geese without any problems then suddenly the AF goes haywire.

    I need to stay in Normal VR with this lens and TC to see if it ever happens. So far I'm not aware of it being a problem. It's just that consecutive images change the framing when using Normal VR (so I know there is some type of problem that always existed since owning the lens). If I send the lens out for repair, I want to be sure that all the issues are addressed. If it's possible to continue using the lens in Normal VR without the AF problem, then I will do so without sending it in for repair.
    Cindy
    Flickr
    and My 2020 Thread

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



  7. #27
    Staff
    Super Mod
    hark's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    Took more photos today only to have the focus missed on just about all of them. So I read this article on cleaning the contacts:

    https://www.nikonimgsupport.com/eu/B...d=1&lang=en_GB

    Following the article, I used a disposable lens cloth wrapped around a plastic citrus stick and cleaned contacts on both ends of the TC as well as the rear of the lens. It removed some grey grime from the lens' contacts even though I previously cleaned those contacts with a microfiber cloth. When I have time, I will add a little bit of rubbing alcohol to another clean lens cloth and clean the lens contacts again. The TC didn't show any grime.
    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



  8. #28
    Staff
    Super Mod
    hark's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    I think I can put this to rest for now. It's definitely an issue with the lens despite cleaning the lens contacts with rubbing alcohol.

    Once again I coupled the lens with a new TC. Lots of front focusing by several inches. Initially I used it with Sport VR. It was the first time in a long time that the image would freeze within the viewfinder. I shot several pics then switched to Normal VR. After several more shutter actuations, I went back to Sport VR. Suddenly the images within the viewfinder wouldn't freeze. This has been an ongoing issue, and obviously with a different TC, the TC isn't at fault.

    The AF might also be affected, but at some point I will send the lens to Nikon for repair. It's possible there is more grime within the recessed areas of the lens contacts. I removed what I could get safely. I'm just hesitant to send anything in for repair right now - not sure if Nikon's repair center has many people working yet.
    Cindy
    Flickr
    and My 2020 Thread

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



  9. #29
    Senior Member

    Re: Refurb 1.7x TC & 300mm PF

    It may take a little longer than normal:


    Updated July 15, 2020
    Important Notice Regarding California service Facility:
    Our first priority remains the safety of our customers and employees.
    In compliance with California Government mandates regarding Covid-19, we have currently suspended operations at our Los Angeles, CA service facility.
    Repair services are currently available to all customers at our New York facility, including those mailing-in product, as well as walk-in / counter service.
    For walk-in service, please be aware that customers will be required to observe the safety protocols in place at these facilities.

    We would like to ask for your patience, as an increase in repair turn-around time is expected due to the increase in transit/delivery time as a result of COVID-19.
    Please contact Nikon Customer support at nikonusa.com/support for more information. We apologize for any inconvenience and thank you for your understanding.

  10. #30
    Staff
    Super Mod
    hark's Avatar

    Re: Refurb 1.7x TC & 300mm PF

    Quote Originally Posted by Andy W View Post
    It may take a little longer than normal:


    Updated July 15, 2020
    Important Notice Regarding California service Facility:
    Our first priority remains the safety of our customers and employees.
    In compliance with California Government mandates regarding Covid-19, we have currently suspended operations at our Los Angeles, CA service facility.
    Repair services are currently available to all customers at our New York facility, including those mailing-in product, as well as walk-in / counter service.
    For walk-in service, please be aware that customers will be required to observe the safety protocols in place at these facilities.

    We would like to ask for your patience, as an increase in repair turn-around time is expected due to the increase in transit/delivery time as a result of COVID-19.
    Please contact Nikon Customer support at nikonusa.com/support for more information. We apologize for any inconvenience and thank you for your understanding.
    Thanks for this, Andy. I knew it would be possible that Nikon wouldn't be fully staffed. Guess I will either have to get out my 300mm non-VR lens to use with the TC or use the TC with my 70-200mm f/4 VR zoom (definitely the lighter weight option).
    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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