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|  » Stats |
Members: 50,171
Threads: 82,383
Posts: 853,527
Top Poster: glsammy (15,069)
| | Welcome to our newest member, Stackyard | |  | 
04-03-2008, 03:43 PM
|  | Commander of the Wild Empire | | Join Date: Oct 2006 Location: Hertfordshire..
Posts: 2,488
| | | What's a Pump
Ive been noticing that a few member are using a pump when photographing birds etc..could some one please explain when exactly this is ... 
many thanx
Julie
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04-03-2008, 03:52 PM
|  | Knight Grand Cross of the Wild Empire | | Join Date: Feb 2006 Location: i'm right here
Posts: 11,154
| | | Re: What's a Pump
Its a thing that moves water up hill
but in this context its the nick name of the canon 100-400 IS lens - so called because the zoom action is done by sliding it in and out like a bike pump rather than by turning a wheel as is common on most other zoom lenses.
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04-03-2008, 03:53 PM
|  | Moderator | | Join Date: Oct 2005 Location: Nottingham
Posts: 15,069
| | | Re: What's a Pump
The pump is the nickname given to the Canon 100-400mm lens, due to the push-pull action of the zoom. 
Edit:
Sorry Pete, Posted at just about the same time as you.
Last edited by glsammy; 04-03-2008 at 03:54 PM.
Reason: addition.
|
04-03-2008, 03:54 PM
| | Knight Grand Cross of the Wild Empire | | Join Date: Feb 2006 Location: i'm right here
Posts: 11,154
| | | Re: What's a Pump
theres an echo in here
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Some people are like slinkies, good for nowt, but they make you smile when pushed down stairs |
04-03-2008, 03:59 PM
| | Commander of the Wild Empire | | Join Date: Oct 2006 Location: Hertfordshire..
Posts: 2,488
| | | Re: What's a Pump
Many thanx guys...it was a rather simple answer
after all...
Julie
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A Promise isn't kept until Its Delivered. |
05-03-2008, 06:58 PM
| | Commander of the Wild Empire | | Join Date: Jun 2006 Location: Suffolk Coast
Posts: 2,099
| | | Re: What's a Pump
You two could have also addeed that a heck of a lot list users own one, and most are mighty pleased -- I am  |
06-03-2008, 04:29 PM
| | Knight Grand Cross of the Wild Empire | | Join Date: Feb 2006 Location: i'm right here
Posts: 11,154
| | | Re: What's a Pump
thats true - tho graham uses a bigma while i have a li'l bigma (sigma 50-500 and 170-500 respectively). I might change to the pump but i'm waiting to see how the sigma 150-500 OS gets reviewed first
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Some people are like slinkies, good for nowt, but they make you smile when pushed down stairs |
06-03-2008, 05:02 PM
|  | Commander of the Wild Empire | | Join Date: Sep 2006 Location: Basingstoke, Hampshire
Posts: 2,582
| | | Re: What's a Pump
Quote:
Originally Posted by eeyore  thats true - tho graham uses a bigma while i have a li'l bigma (sigma 50-500 and 170-500 respectively). I might change to the pump but i'm waiting to see how the sigma 150-500 OS gets reviewed first | Like you I am waiting to see what the reviews have to say about the 150-500mm. I have the pump and use it with a 1.4tc but find not having the AF is a bit of a pain and the image sharpness is just not up scratch with the Canon 1.4tc added. If the images are sharp at the 500mm end then I will be tempted. The 4 stop OS will be a great help when shooting from a boat off the Pembrokeshire coast later this year.
Gerry | | |
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