Nikon 300mm F4 ED IS SWM AF-S

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Twood22376

Senior Member
Hi all,

Just a quick one. Seen a Nikon 300mm F4 ED IS SWM AF-S advertised for sale second hand in perfect cosmetic condition, however is said in the ad there is a slight noisy motor, a slight squeal that doesn't affect its working operation. Should i be worried about buying this lens, is it likely to go wrong. Would there be a way of fixing the squeak.. Sorry for the million and one questions.

Thanks Tom
 
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rocketman122

Senior Member
a squeak is the beginning of the end of the afs motor. but it might also be the bearings that sit around the motor. I had experience firt hand with this with 28-70 AFS. its the first gen SWM inside them.
 
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Twood22376

Senior Member
rocketman122 said:
a squeak is the beginning of the end of the afs motor. but it might also be the bearings that sit around the motor. I had experience firt hand with this with 28-70 AFS. its the first gen SWM inside them.
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Beginning of the end...... that doesn't sound good, i think ill give it a miss then. : ) Cheers for the quick reply
 
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Don Kuykendall_RIP

RIP :(
Twood22376 said:
Cheers for the reply, I currently have the d7100, coupled with a sigma 70-300mm apo lens, its getting some good shots but seems blurred in the upper focal ranges.
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Have you fine tuned the lenses in the d7100? That can make a BIG difference in sharpness. When I fine tuned all my lenses for my D7100 I was surprised at how much difference it did make.
 
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Twood22376

Senior Member
Don Kuykendall said:
Have you fine tuned the lenses in the d7100? That can make a BIG difference in sharpness. When I fine tuned all my lenses for my D7100 I was surprised at how much difference it did make.
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Ahhhh now the inner newb in me comes out... how do you fine tune lenses ? is there a specific way.
 
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Don Kuykendall_RIP

RIP :(
Twood22376 said:
Ahhhh now the inner newb in me comes out... how do you fine tune lenses ? is there a specific way.
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There are a number of site on the internet that give different methods of doing this. What you are doing is setting the auto-focus point of each lens to be at its sharpest point. You will see it called back-focus by many people. There is a setting in your camera to set each different lens you have. Do not just go in and set it without going though all the proper procedures. I use a computer program http://www.reikan.co.uk/focalweb/index.php/versions/focal-pro/ that along with a focus chart that comes with the software allows you to get the best suto-focus from each different lens.


Here are some Google suggestions on the subject

https://www.google.com/search?q=aut...5.9240j0j4&sourceid=chrome&es_sm=122&ie=UTF-8
 
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Twood22376

Senior Member
Thanks for this mate : )




Don Kuykendall said:
There are a number of site on the internet that give different methods of doing this. What you are doing is setting the auto-focus point of each lens to be at its sharpest point. You will see it called back-focus by many people. There is a setting in your camera to set each different lens you have. Do not just go in and set it without going though all the proper procedures. I use a computer program FoCal Pro - Reikan FoCal Automatic Lens Calibration SoftwareReikan FoCal Automatic Lens Calibration Software that along with a focus chart that comes with the software allows you to get the best suto-focus from each different lens.


Here are some Google suggestions on the subject

https://www.google.com/search?q=aut...5.9240j0j4&sourceid=chrome&es_sm=122&ie=UTF-8
Click to expand...
 
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