Biggest "normal" lens


enewmen

New Member
Aug 4, 2010
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Pasir Ris, Singapore
#1
Hi All.

I'm looking for a premium lens (fast & long FL).
The first lens I got my eye on is the 300mm F/2.8 - an awesome lens.
But those seem to require a gimbal head and I can't just carry it around my neck - like at the zoo.
So, what will be the biggest lens someone can reasonabily carry around without looking ridiculous or getting attention from authorities ? I am looking for fast and long (I know this means a HUGE lens), so zoom isn't necessary.

ok thanks!
 

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Rashkae

Senior Member
Nov 28, 2005
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#2
Fast= large aperture. Long+fast = large lens elements.

The laws of physics and basic math will tell you that you cannot have the best of both worlds.

If you are willing to compromise on aperture, a lot is possible. You can get a 70-400mm, or a 500mm f/8 reflex lens, etc.
 

Rashkae

Senior Member
Nov 28, 2005
19,105
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#4
200 f2.8L with 1.4x or 2x teleconverter
Yeah but then you have image degradation and you lose the f/2.8 as the converter applies to aperture as well (in terms of loss of light).

So a 200mm f/2.8L with a 2x converter is 400mm f/5.6, and will likely have far worse image quality than getting a normal 70-400 with f/5.6 at 400mm.
 

enewmen

New Member
Aug 4, 2010
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Pasir Ris, Singapore
#5
It seems a 300 f/2.8 is just too big without getting silly.
A teleconverter (like willdoang said) on a shorter lens may be necessary to get the reach.
I hope a 2x won't distort the image too much. I'll also look at a zoom lens like Rashkae said or a 400 f/5.6 fixed.
Just afraid a f/5.6 is too slow for night-safari.

Thanks for the replies!
 

Last edited:

Rashkae

Senior Member
Nov 28, 2005
19,105
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#6
It seems a 300 f/2.8 is just too big without getting silly.
A teleconverter (like willdoang said) on a shorter lens may be necessary to get the reach.
I hope a 2x won't distort the image too much. I'll also look at a zoom lens like Rashkae said or a 400 f/5.6 fixed.
Just afraid a f/5.6 is too slow for night-safari.

Thanks for the replies!
Even a 300mm f/2.8 will give you problems in the night safari.

honestly? don't bring your gear to the night safari. Relax and enjoy. Not worth the hassle.
 

enewmen

New Member
Aug 4, 2010
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Pasir Ris, Singapore
#7
Even a 300mm f/2.8 will give you problems in the night safari.

honestly? don't bring your gear to the night safari. Relax and enjoy. Not worth the hassle.
Yes, I agree and I should stop thinking to much.,
I have other reasons for a good lens other than night safari. But the way this conversation is going, I may just get a zoom lens for casual use. Later I'll get a huge lens & gimbal for when I really need it (birls, astronomy, etc)
 

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Diavonex

Senior Member
Sep 23, 2008
3,641
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Admiralty
#10
Hi All.

I'm looking for a premium lens (fast & long FL).
The first lens I got my eye on is the 300mm F/2.8 - an awesome lens.
But those seem to require a gimbal head and I can't just carry it around my neck - like at the zoo.
So, what will be the biggest lens someone can reasonabily carry around without looking ridiculous or getting attention from authorities ? I am looking for fast and long (I know this means a HUGE lens), so zoom isn't necessary.

ok thanks!
It's better to refer to them as fast 300mm prime lens.
 

Nov 26, 2009
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#13
Biggest lens so you would look intimidating? Oh well.
 

catchlights

Moderator
Staff member
Sep 27, 2004
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Punggol, Singapore
www.foto-u.com
#15
the focal length of a normal lens is equivalent to the length of diagonal of the respective format, so a the focal length of a normal lens for 35mm film or full frame digital camera is 50mm.

or 210mm on 4*5 LF =P
correction, the focal length of a normal lens for 4x 5 camera is 150mm.
and for a 5X7 camera is 210mm.
and for a 8x10 camera is 300mm.


anyway, not sure what TS intend to shoot in the zoo, whether his is carrying a DSLR with 300mm f2.8 or 8x10 view camera with 300mm lens, surely it is not very normal, will get a lot of attention.
 

#16
the focal length of a normal lens is equivalent to the length of diagonal of the respective format, so a the focal length of a normal lens for 35mm film or full frame digital camera is 50mm.

correction, the focal length of a normal lens for 4x 5 camera is 150mm.
and for a 5X7 camera is 210mm.
and for a 8x10 camera is 300mm.


anyway, not sure what TS intend to shoot in the zoo, whether his is carrying a DSLR with 300mm f2.8 or 8x10 view camera with 300mm lens, surely it is not very normal, will get a lot of attention.
thanks! im making my own view camera and was wondering what format i should shoot.. whats 200 on 4*5?