giantcanopy
Senior Member
at the "C" camp, they managed to put the ring motor into their 24/1.4 mk1/2 and 85mm ma ;p
ryan
Nikon Does not tell you all the truth of SWM Silent Wave Motor?
- Thread starter mousedeers
- Start date
at the "C" camp, they managed to put the ring motor into their 24/1.4 mk1/2 and 85mm ma ;p
ryan
mousedeers
Senior Member
Yes u r right it is 14-24mm.
gooseberry
Senior Member
Yes, both Nikon and Canon use two types of motors inside the SWM/USM lenses - ring type and the micro motor type.
But I don't think your list of which Nikon lenses uses which motor is accurate.
This is incorrect. Take a look inside your camera, just inside the mount at the top where the lens electrical contacts connect, you'll see that the pro Nikon bodies (F5, F100, D2series, D3series, D300 etc) have only 8 contacts (the lesser bodies like the D70, D40, F80 etc have only 7 contacts).
(found this image on the net to show the electrical contact points inside the camera)
AF lenses need 5 contacts (2 for power and ground for the lens; 3 for serial communication - communicating lens data back to camera, sending commands to lens like AF or turn VR on etc). AF-S or AF-I lenses need 8 contacts (1 extra high power contact for the lens motor and 1 ground for the lens motor, plus 1 extra read/write for the camera to track direction and speed of lens movement) - though some lesser AF-S lenses only have 7 contacts (eg. the 55-200mm), probably missing that extra read/write contact which the lesser bodies don't have as well since they only have 7 contacts too.
AF-I and AF-S lenses thus either have 10 or 8 (or even 7 for the lesser AF-S lenses) contacts.
So why do some AF-S lenses have 10 contacts - while even the pro bodies only have 8 contacts to match up to ?
Take a look at a Nikon AF-S teleconverter - it has 8 contacts on the camera side, but has 10 contacts on the lens side. The two extra contacts are for the teleconverter to tell the lens that it is connected to a teleconverter and which type (1.4x 1.7x or 2x) so that the lens reports back to the camera the proper aperture/focal length (thus a 70-200/2.8 when connected to a 1.4x teleconverter will report that it is a 98-280/4)
Even some AF-S lenses which weren't supposed to be used with the Nikon teleconverters had 10 contacts (eg. 17-35), but they'd work properly with Kenko teleconverters because of these contacts.
So Nikon made AF-S lenses with either 10 contacts or 7 contacts (for the lesser lenses). Even lenses which were not meant to be used with AF-S teleconverters had 10 contacts. Somewhere along the way among the newer AF-S lenses, Nikon must have decided to drop the 2 contacts for those lenses not meant to be used with the AF-S teleconverters, thus they only have 8 contacts (eg. 16-35, 24/1.4, 85/1.4 etc)
But I don't think your list of which Nikon lenses uses which motor is accurate.
This is incorrect. Take a look inside your camera, just inside the mount at the top where the lens electrical contacts connect, you'll see that the pro Nikon bodies (F5, F100, D2series, D3series, D300 etc) have only 8 contacts (the lesser bodies like the D70, D40, F80 etc have only 7 contacts).
(found this image on the net to show the electrical contact points inside the camera)
AF lenses need 5 contacts (2 for power and ground for the lens; 3 for serial communication - communicating lens data back to camera, sending commands to lens like AF or turn VR on etc). AF-S or AF-I lenses need 8 contacts (1 extra high power contact for the lens motor and 1 ground for the lens motor, plus 1 extra read/write for the camera to track direction and speed of lens movement) - though some lesser AF-S lenses only have 7 contacts (eg. the 55-200mm), probably missing that extra read/write contact which the lesser bodies don't have as well since they only have 7 contacts too.
AF-I and AF-S lenses thus either have 10 or 8 (or even 7 for the lesser AF-S lenses) contacts.
So why do some AF-S lenses have 10 contacts - while even the pro bodies only have 8 contacts to match up to ?
Take a look at a Nikon AF-S teleconverter - it has 8 contacts on the camera side, but has 10 contacts on the lens side. The two extra contacts are for the teleconverter to tell the lens that it is connected to a teleconverter and which type (1.4x 1.7x or 2x) so that the lens reports back to the camera the proper aperture/focal length (thus a 70-200/2.8 when connected to a 1.4x teleconverter will report that it is a 98-280/4)
Even some AF-S lenses which weren't supposed to be used with the Nikon teleconverters had 10 contacts (eg. 17-35), but they'd work properly with Kenko teleconverters because of these contacts.
So Nikon made AF-S lenses with either 10 contacts or 7 contacts (for the lesser lenses). Even lenses which were not meant to be used with AF-S teleconverters had 10 contacts. Somewhere along the way among the newer AF-S lenses, Nikon must have decided to drop the 2 contacts for those lenses not meant to be used with the AF-S teleconverters, thus they only have 8 contacts (eg. 16-35, 24/1.4, 85/1.4 etc)
fatigue
Senior Member
at least i know the repair cost will be lower if it does breaks down
+1
We can even get the parts for U$20
http://cgi.ebay.com/Nikon-Nikkor-18...igital_Camera_Accessories&hash=item2a078374f7
Useful info!
Canon have been labelling their EOS system lenses clearly as either the cheaper Arc Form Drive (AFD) or the more expensive quiet/fast Ultra Sonic Motor (USM) types since the 80s. I always preferred the USMs which maximise the speed that EOS has over rival brands. (I'm a non-fanboy btw, having owned/used most of the regular brands in the market...I buy/use not based on brand alone
)
Of course the diff is that Nikon SLRs have mostly had inbody motors compared to the EOS system.
Canon have been labelling their EOS system lenses clearly as either the cheaper Arc Form Drive (AFD) or the more expensive quiet/fast Ultra Sonic Motor (USM) types since the 80s. I always preferred the USMs which maximise the speed that EOS has over rival brands. (I'm a non-fanboy btw, having owned/used most of the regular brands in the market...I buy/use not based on brand alone
)Of course the diff is that Nikon SLRs have mostly had inbody motors compared to the EOS system.
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ZeroDivine
Senior Member
Thanks gooseberry
so the list might be wrong.. and the 24 1.4 and 85 1.4 might be indeed using the better motor instead of the cheaper motor? glad to know that I didn't shoot an email to nikon yet
so the list might be wrong.. and the 24 1.4 and 85 1.4 might be indeed using the better motor instead of the cheaper motor? glad to know that I didn't shoot an email to nikon yet
george671
New Member
:thumbsup:Great post, I knew about the Canon glass, but I never thought about the same holding true of the Nikon lenses...:think:Makes me wonder about my newly aquired Olympus M4/3 glass as well, though I think they all have the larger type moters...For my Nikon gear, I continue to mostly use non g lenses (no motor to fail)...I've had some of this glass for over 20 years...Of course my Olympus M4/3 AF lenses are all "g" type (motor in lense) so go figure!. I've always felt that any lense over $1000 should not fail for at least 20 years so I have tried to stay away from motorized glass...That will change soon when I get the Olympus 150 F2 at $2300 (for my new smaller travel kit)...I do envy the apparent faster focus speed of some of the SWM glass though. 
Anyway I still shoot primarily in MF (in studio) so the AF speed is kinda moot. Anybody have failure rate data???
Cheers
www.snakephoto.blogspot.com
Anyway I still shoot primarily in MF (in studio) so the AF speed is kinda moot. Anybody have failure rate data???Cheers
www.snakephoto.blogspot.com
kwttan
New Member
Thanks for the great piece of information. Also surprise the latest 24f1.4g and 85f1.4g are not ring-type motor. :bigeyes:
Can it be due to the size of lens and the component inside that prevent having ring-type motor in it? :think: (took a quick glance and did not read all threads, if asked before just ignore this statement)
Can it be due to the size of lens and the component inside that prevent having ring-type motor in it? :think: (took a quick glance and did not read all threads, if asked before just ignore this statement)
OMG! Anybody knows how much it costs for US$20 thing cost nowadays at NCS.......
luna_sea83
Senior Member
if you look at the ebay link, it states that it is used previously with signs of wear and tear.
Naturally a new part will definately cost more and additional warranty is provided by service centre, you may buy a used 20 bucks motor from him but do you have the what it takes to dismantle the lens assembly?
Naturally a new part will definately cost more and additional warranty is provided by service centre, you may buy a used 20 bucks motor from him but do you have the what it takes to dismantle the lens assembly?
gooseberry
Senior Member
Thanks gooseberry
so the list might be wrong.. and the 24 1.4 and 85 1.4 might be indeed using the better motor instead of the cheaper motor? glad to know that I didn't shoot an email to nikon yet
No probs... just sharing info, as using the "10/8 contact rule" to say what type of motor a lens has is incorrect. Even the list is inconsistent with that supposed rule anyway - the 18-70 and both versions of the 18-200 all have 10 contacts, but are listed as having the micro motor.
The only real way of knowing is either Nikon states which motor is in which lens, or someone who has actually opened up each of the lenses and seen what motor is used.
fatigue
Senior Member
The gears
What your sources didn't tell. hahaha.. Just kidding
This belt drive mechanism is not from Nikon lens. It should be from Sigma
I don't think the motor is SWM
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fatigue
Senior Member
Yes, quite inconsistent
AF-S DX 18-70/3.5-4.5G IF-ED should be ring motor
AF-S 105/2.8G IF-ED Micro VR has a micro motor at the back but it also has one big mechanism in front