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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 20 Nov 2009 (Friday) 17:03
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300mm f/2.8.............manual + filter size

 
Anto ­ Modded
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Nov 20, 2009 17:03 |  #1

Is there anywhere i can download a manual for the 300mm f2.8 IS, and also what size is the outer ring if i want to buy a filter..........87mm maybe


  
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FlyingPhotog
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Nov 20, 2009 17:07 |  #2

Filters don't go over the front of the lens, they are 52mm "Drop In" style and fit back near the rear in a threaded holder sold seperately.


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JeffreyG
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Nov 20, 2009 17:07 |  #3

Anto Modded wrote in post #9052563 (external link)
Is there anywhere i can download a manual for the 300mm f2.8 IS, and also what size is the outer ring if i want to buy a filter..........87mm maybe

This lens has no filter threads. Filters are drop in units that are inserted into the middle of the lens.


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Anto ­ Modded
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Nov 20, 2009 17:22 |  #4

i seen the drop in, my thoughts were that iff i could get an out one i could use it as a protector. I seen a course thread and thought that there might be an option for one. Thanks for clearing that up


  
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FlyingPhotog
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Nov 20, 2009 17:24 |  #5

Anto Modded wrote in post #9052663 (external link)
i seen the drop in, my thoughts were that iff i could get an out one i could use it as a protector. I seen a course thread and thought that there might be an option for one. Thanks for clearing that up

FWIW, the very first glass element at the front of the 300 f/2.8 is essentially a Null element and is designed to be replaceable in a fairly "easy" manner.

The depth of the hood offers some protection as well.


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amfoto1
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Nov 20, 2009 17:29 |  #6

Nope, no threads at all up front... You'd need something like 120mm. But it would be a real shame to stick any kind of extra optics in front of this incredible lens and risk any loss of IQ, anyway!

I don't know about the first element being strictly a null element, but it is separate and less costly to replace. I seem to recall reading some other uses for this element, aside from just protection.

Yes, that hood is quite deep and protects the front of the lens very well.

I'm sure you could call Canon and get a copy of the manual. Might be a download available on one or the other of their websites, too. The manual you need includes the 300/2.8, 400/2.8, 500/4 and 600/4, I believe.


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Sean
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Nov 20, 2009 17:29 |  #7

FlyingPhotog wrote in post #9052680 (external link)
FWIW, the very first glass element at the front of the 300 f/2.8 is essentially a Null element and is designed to be replaceable in a fairly "easy" manner.

The depth of the hood offers some protection as well.

This is true. The front element is a "protection" element, and is inexpensive and easy to replace.


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Mike ­ Deep
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Nov 20, 2009 19:14 |  #8

Optical diagram illustrating the protective meniscus front element:

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: 404 | MIME changed to 'text/html' | Byte size: ZERO


As mentioned above there is no way to attach a front filter on the Canon. Other brands of 300/2.8 lenses may have 112mm front filters.

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Anto ­ Modded
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Nov 21, 2009 04:07 |  #9

Thanks for the info, just wanted to be safe. Happy now i know its a protection element. Thanks


  
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Neilyb
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Nov 21, 2009 05:43 |  #10

http://www.devicemanua​ls.com …ser-Guide-TkRBME1qQT.html (external link)

Try this.


http://natureimmortal.​blogspot.com (external link)

http://www.natureimmor​tal.com (external link)

  
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m3pj
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Nov 21, 2009 08:33 |  #11

Its difficult to find the manual for this, but HERE (external link) is were I found one.


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Anto ­ Modded
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Nov 21, 2009 11:59 |  #12

perfect, thanks


  
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Laudrup
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Nov 21, 2009 12:20 |  #13

FlyingPhotog wrote in post #9052680 (external link)
FWIW, the very first glass element at the front of the 300 f/2.8 is essentially a Null element and is designed to be replaceable in a fairly "easy" manner.

The depth of the hood offers some protection as well.

I've got the 300 and never knew this, puts my mind at ease a bit more thanks!




  
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300mm f/2.8.............manual + filter size
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