If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Air coming through lens?
Hi
I've just purchased a Nikon 18-200mm VR lens for my D40. Rushed home from work tonight, fitted it to the camera body, and have been having fun testing it out. So far I'm very impressed with it - especially the VR - and it's going to allow me to do much more than the 18-55mm kit lens it replaces. One thing I've noticed, however, is that as I zoom the lens in and out I can feel a definite current of air blowing into my eye through the viewfinder. Is this normal? I never noticed it on my 18-55, but that obviously has a much smaller zoom than the 18-200. Should I be overly concerned about this (I'm thinking in terms of dust entering the camera), or is it just something to expect with a lens of this range? Cheers. |
#2
|
|||
|
|||
Air coming through lens?
wrote in message
ups.com... I've just purchased a Nikon 18-200mm VR lens for my D40. Rushed home from work tonight, fitted it to the camera body, and have been having fun testing it out. So far I'm very impressed with it - especially the VR - and it's going to allow me to do much more than the 18-55mm kit lens it replaces. One thing I've noticed, however, is that as I zoom the lens in and out I can feel a definite current of air blowing into my eye through the viewfinder. Wait till the nights get cold and the lens makes a fine set of bellows to fan the flames ;-) cheers adrian www.boliston.co.uk |
#3
|
|||
|
|||
Air coming through lens?
wrote in message
ups.com... Hi I've just purchased a Nikon 18-200mm VR lens for my D40. Rushed home from work tonight, fitted it to the camera body, and have been having fun testing it out. So far I'm very impressed with it - especially the VR - and it's going to allow me to do much more than the 18-55mm kit lens it replaces. One thing I've noticed, however, is that as I zoom the lens in and out I can feel a definite current of air blowing into my eye through the viewfinder. Is this normal? I never noticed it on my 18-55, but that obviously has a much smaller zoom than the 18-200. Should I be overly concerned about this (I'm thinking in terms of dust entering the camera), or is it just something to expect with a lens of this range? Cheers. I've often come across air blowing out of a zoom lens as the lens is zoomed (with the lens off the body). I've never come across that air coming out of the viewfinder when the lens is on the body. Personally, I'd be somewhat concerned. Sorry to be pessimistic. Ian, Nottingham, UK. |
#4
|
|||
|
|||
Air coming through lens?
Fred Anonymous wrote:
I've never come across that air coming out of the viewfinder when the lens is on the body. My D70 does that too. Has done so for the past 3 years without a problem occurring. The air has to go somewhere. Was most noticeable with a 70-210 - larger bicycle pump style push-pull zoom. |
#5
|
|||
|
|||
Air coming through lens?
"Fred Anonymous" wrote in message ... wrote in message ups.com... Hi I've just purchased a Nikon 18-200mm VR lens for my D40. Rushed home from work tonight, fitted it to the camera body, and have been having fun testing it out. So far I'm very impressed with it - especially the VR - and it's going to allow me to do much more than the 18-55mm kit lens it replaces. One thing I've noticed, however, is that as I zoom the lens in and out I can feel a definite current of air blowing into my eye through the viewfinder. Is this normal? I never noticed it on my 18-55, but that obviously has a much smaller zoom than the 18-200. Should I be overly concerned about this (I'm thinking in terms of dust entering the camera), or is it just something to expect with a lens of this range? Cheers. I've often come across air blowing out of a zoom lens as the lens is zoomed (with the lens off the body). I've never come across that air coming out of the viewfinder when the lens is on the body. Personally, I'd be somewhat concerned. Sorry to be pessimistic. Be scared! Be very scared! Ian, Nottingham, UK. |
#6
|
|||
|
|||
Air coming through lens?
wrote in message ups.com... Hi I've just purchased a Nikon 18-200mm VR lens for my D40. Rushed home from work tonight, fitted it to the camera body, and have been having fun testing it out. So far I'm very impressed with it - especially the VR - and it's going to allow me to do much more than the 18-55mm kit lens it replaces. One thing I've noticed, however, is that as I zoom the lens in and out I can feel a definite current of air blowing into my eye through the viewfinder. Is this normal? I never noticed it on my 18-55, but that obviously has a much smaller zoom than the 18-200. Should I be overly concerned about this (I'm thinking in terms of dust entering the camera), or is it just something to expect with a lens of this range? Others have mentioned experiencing this too. I have the 18-200 VR also, haven't yet noticed this myself but that's probably just because I haven't zoomed the lens over a large range quickly enough. I think yes, it's just something to expect with this sort of lens and I wouldn't be overly concerned about it. Whether it contributes to dust entering the camera I have no idea. Some people have expressed the opinion that most of the junk that eventually finds its way to the sensor was already in the camera when it left the factory, and whatever dust comes through the "porthole" while the camera's in use doesn't seem to make that much difference. They may be right. Neil |
#7
|
|||
|
|||
Air coming through lens?
Fred Anonymous wrote:
wrote in message ups.com... Hi I've just purchased a Nikon 18-200mm VR lens for my D40. Rushed home from work tonight, fitted it to the camera body, and have been having fun testing it out. So far I'm very impressed with it - especially the VR - and it's going to allow me to do much more than the 18-55mm kit lens it replaces. One thing I've noticed, however, is that as I zoom the lens in and out I can feel a definite current of air blowing into my eye through the viewfinder. Is this normal? I never noticed it on my 18-55, but that obviously has a much smaller zoom than the 18-200. Should I be overly concerned about this (I'm thinking in terms of dust entering the camera), or is it just something to expect with a lens of this range? Cheers. I've often come across air blowing out of a zoom lens as the lens is zoomed (with the lens off the body). I've never come across that air coming out of the viewfinder when the lens is on the body. Personally, I'd be somewhat concerned. Sorry to be pessimistic. I happens with the Sony A100/KM5D and the 18-200/18-250mm lenses. The viewfinders are just hollows mirror boxes and the air scoots right through. It does not happen with the KM 7D with the same lens - glass prism. The D40 is a mirror prism, so the air can flow. David |
#8
|
|||
|
|||
Air coming through lens?
On 31 Aug, 23:14, "Neil Harrington" wrote:
wrote in message ups.com... Hi I've just purchased a Nikon 18-200mm VR lens for my D40. Rushed home from work tonight, fitted it to the camera body, and have been having fun testing it out. So far I'm very impressed with it - especially the VR - and it's going to allow me to do much more than the 18-55mm kit lens it replaces. One thing I've noticed, however, is that as I zoom the lens in and out I can feel a definite current of air blowing into my eye through the viewfinder. Is this normal? I never noticed it on my 18-55, but that obviously has a much smaller zoom than the 18-200. Should I be overly concerned about this (I'm thinking in terms of dust entering the camera), or is it just something to expect with a lens of this range? Others have mentioned experiencing this too. I have the 18-200 VR also, haven't yet noticed this myself but that's probably just because I haven't zoomed the lens over a large range quickly enough. I think yes, it's just something to expect with this sort of lens and I wouldn't be overly concerned about it. Whether it contributes to dust entering the camera I have no idea. Some people have expressed the opinion that most of the junk that eventually finds its way to the sensor was already in the camera when it left the factory, and whatever dust comes through the "porthole" while the camera's in use doesn't seem to make that much difference. They may be right. Thanks Neil (and to the others who responded). If it's something others have experienced, then I'm not too worried. I was thinking it might be a problem with my camera, the lens or the way I'd attached them. Hope they are right about the dust issue, though I'm resigned to the fact that some dust is going to get onto my sensor eventually, although I was hoping to delay that from happening by using a lens like the 18-200mm. Maybe I should raid the piggy bank and get one of the new D300s with the self-cleaning sensor. :-) |
#9
|
|||
|
|||
Air coming through lens?
On 9/2/07 8:47 AM, "Rita Ä Berkowitz" ritaberk2O04 @aol.com wrote:
Neil Harrington wrote: Others have mentioned experiencing this too. I have the 18-200 VR also, haven't yet noticed this myself but that's probably just because I haven't zoomed the lens over a large range quickly enough. Smart move! Nikon has installed a rupture disc in the camera body that is designed to fail when the pressure differential of internal exceeds the external by 3 PSI. Faulty rupture discs have been known to cause the diopter to blow out and cause eye injuries when aggressively zooming the 18-200mm VR. Can you give us a reference to where this has been published? I'd like more details. |
#10
|
|||
|
|||
Air coming through lens?
wrote in message oups.com... On 31 Aug, 23:14, "Neil Harrington" wrote: wrote in message ups.com... Hi I've just purchased a Nikon 18-200mm VR lens for my D40. Rushed home from work tonight, fitted it to the camera body, and have been having fun testing it out. So far I'm very impressed with it - especially the VR - and it's going to allow me to do much more than the 18-55mm kit lens it replaces. One thing I've noticed, however, is that as I zoom the lens in and out I can feel a definite current of air blowing into my eye through the viewfinder. Is this normal? I never noticed it on my 18-55, but that obviously has a much smaller zoom than the 18-200. Should I be overly concerned about this (I'm thinking in terms of dust entering the camera), or is it just something to expect with a lens of this range? Others have mentioned experiencing this too. I have the 18-200 VR also, haven't yet noticed this myself but that's probably just because I haven't zoomed the lens over a large range quickly enough. I think yes, it's just something to expect with this sort of lens and I wouldn't be overly concerned about it. Whether it contributes to dust entering the camera I have no idea. Some people have expressed the opinion that most of the junk that eventually finds its way to the sensor was already in the camera when it left the factory, and whatever dust comes through the "porthole" while the camera's in use doesn't seem to make that much difference. They may be right. Thanks Neil (and to the others who responded). You're very welcome. If it's something others have experienced, then I'm not too worried. I was thinking it might be a problem with my camera, the lens or the way I'd attached them. No, I don't think you could attach the lens wrong even if you tried, and it's probably inevitable that any lens that lengthens or shortens as much as the 18-200 does when it's zoomed over its whole range is bound to pump air to some extent. Hope they are right about the dust issue, though I'm resigned to the fact that some dust is going to get onto my sensor eventually, although I was hoping to delay that from happening by using a lens like the 18-200mm. Maybe I should raid the piggy bank and get one of the new D300s with the self-cleaning sensor. :-) How good those self-cleaning sensors are is another question. Anything that shakes the dust off the sensor but still leaves it in the camera body, where it will eventually find the sensor again, does not seem like a perfect solution. It's worth keeping in mind also that dust doesn't actually settle on the sensor itself, but on a filter that's over the sensor and not quite at the focal plane. So small dust particles can accumulate on this filter and not become visible at all except at small aperture settings which allow them to come into focus. This is perhaps why many users change lenses a great deal and still never have problems with dust. When it does become necessary to clean the sensor, you might want to look at the Delkin SensorScope system. http://www.delkin.com/products/sensorscope/ This provides an illuminated loupe to examine the sensor, a mini vacuum to clean it, sensor swabs and cleaning solution. User reviews I've seen vary greatly about the cleaning tools -- some say they work perfectly, others say they don't work at all and only make things worse. Everyone seems to like the scope itself, which I understand is now available without the whole kit. In any case, cleaning the sensor (actually only the filter over the sensor) is something you'd want to approach very, very carefully and not do at all unless really necessary. The SensorScope kit users who got bad results may have been doing something wrong, but this just makes the point that a certain amount of skill in using the tools is necessary. I bought one of the Delkin kits when it was on sale at a very attractive price, but haven't used it to clean anything with yet. Neil |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
The big cat is coming to get you! | D-Mac[_2_] | 35mm Photo Equipment | 36 | March 16th 07 03:05 AM |
shadow is coming | marika | Large Format Equipment For Sale | 0 | October 3rd 06 02:32 AM |
Anything coming after SONY HDR-HC3? | Dandelion | Digital Photography | 1 | September 19th 06 03:43 AM |
New Canon EF 50mm f1.2L lens coming?? | Braxus | 35mm Photo Equipment | 49 | January 17th 06 05:39 AM |
Another bargain coming my way... | DD (Rox) | 35mm Photo Equipment | 19 | October 30th 05 11:34 PM |