Why are there not more f/1.8 lenses from Nikon, Canon and Sony?

10 months 4 weeks ago #654776 by Uplander
Have you noticed how many f/1.8 lenses that Sigma has been spitting out over the years?  Why don't we see Nikon and the rest of the crew cranking these out vs the f/2.8 lenses?  


70-200mm f/1.8  :drool:

Oh damn, you know that would be a work of art!


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10 months 4 weeks ago #654785 by Nikon Shooter
My 200mm ƒ2 cost 5k. A ƒ 1-8 would cost ??? Now
imagine a ƒ 1.8 70~200 mm zoom!!!

Still wondering why are there not more f/1.8 lenses?

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10 months 4 weeks ago #654786 by Nikon Shooter
Addendum

… and my 200~400 mm ƒ 4 was in the area of 6K
A ƒ 1.8 …???

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10 months 3 weeks ago #654883 by garyrhook
There's another thread on here regarding the question of why there isn't a 70-300 f/2.8. The OP asserted that technology could make that happen.

Unfortunately, physics doesn't care about your technology. There are physical requirements to let in enough light, and make the lenses large enough, to allow for that.

Aside from the cost, mentioned above, you'd have a very bulky lens, probably a very heavy lens, and it would very challenging to get the IQ acceptable across the image.

Yes, Sigma is making f/1.8 lenses, but you'll note that the longest is still only 85mm. Which is not that big a deal. Nikon makes an f/1.4 105mm, and a 135mm f/2 lens. After that, no go. (Can't comment on Canon, but since their flange is larger, they maybe could go a bit longer at a wider opening.)

The 300mm f/2.8 Nikon (prime) weighs 8 pounds (3.5kg). It just gets worse from there. There's a limit to what can be done at a given aperture.


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10 months 3 weeks ago #654908 by Sawyer
Dude, can you imagine though a 70-200mm f/1.8???

Hell yeah! 

Canon 5D Mark II | Canon 70-200mm f/2.8L IS USM | Canon 35L | Sigma 85 1.4 | Helios 44M-6 58mm(M42) | Zeiss 50mm 1.4 (C/Y) | Canon 135L | (2) 430EX II
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10 months 3 weeks ago #655049 by Paris Gal
That would be nice, but it would be so heavy I bet.  Not to mention expenSIVE! 

5D mark II gripped | Canon 100L | Canon 85 1.8 | Sigma 50 1.4 | Tamron 28-75 2.8 | 580ex II | 430ex II x 2 |
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10 months 3 weeks ago #655123 by NickSano
70-200mm is what, $2800 these days?  f/1.8 would push this price close to $4000.  Not to mention, I bet this thing would be HEAVY.  I'll keep my current f/2.8 thank you.


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10 months 3 weeks ago #655152 by D Hornick
:agree: 


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10 months 3 weeks ago #655160 by J Photo Man
Dude that would be a crazy heavy lens and expensive.  I don't think the market would support such a lens, not at least from a volume standpoint.  


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10 months 3 weeks ago #655256 by D Hornick

J Photo Man wrote: Dude that would be a crazy heavy lens and expensive.  I don't think the market would support such a lens, not at least from a volume standpoint.  



Understatement!  After I posted yesterday I was thinking about the weight, it would be nuts.  


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10 months 3 weeks ago #655262 by garyrhook

D Hornick wrote:

J Photo Man wrote: Dude that would be a crazy heavy lens and expensive.  I don't think the market would support such a lens, not at least from a volume standpoint.  



Understatement!  After I posted yesterday I was thinking about the weight, it would be nuts.  


Right. Because no one mentioned weight earlier in this thread. Or cost.


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10 months 3 weeks ago #655268 by Nikon Shooter

garyrhook wrote: …Or cost.



No one?

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10 months 3 weeks ago - 10 months 3 weeks ago #655297 by garyrhook

Nikon Shooter wrote:

garyrhook wrote: …Or cost.



No one?


Language barrier. I'll let Google Translate help me out here. I can't vouch for grammatical correctness.

Mon commentaire se situait quelque part entre le sarcastique, le facétieux et le sardonique. Je ne suis pas sûr du mot approprié.

I wish people would read the entire thread.


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10 months 3 weeks ago #655394 by D Hornick

garyrhook wrote:

D Hornick wrote:

J Photo Man wrote: Dude that would be a crazy heavy lens and expensive.  I don't think the market would support such a lens, not at least from a volume standpoint.  



Understatement!  After I posted yesterday I was thinking about the weight, it would be nuts.  


Right. Because no one mentioned weight earlier in this thread. Or cost.


Hey why so rude?  I didn't say or suggest I was the first to bring this up.  I was just saying that I had thought about this.  It's a forum, I'm just adding to the discussion based on what was on my mind.  


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10 months 3 weeks ago #655395 by Nikon Shooter

garyrhook wrote: Language barrier. I'll let Google Translate help me out here. I can't vouch for grammatical correctness.

Mon commentaire se situait quelque part entre le sarcastique, le facétieux et le sardonique. Je ne suis pas sûr du mot approprié.

I wish people would read the entire thread.


Sorry Gary but, at my level in your language,
many subtleties are still escaping me.

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