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Sigma 24 f/1.4 ART glass
Jan 13, 2022 11:26:24   #
Spirit Vision Photography Loc: Behind a Camera.
 
Hello

What is the popular consensus on this lens? It’s sharp, how often does it need calibrating, etc? I have the opportunity to acquire one very cheaply. Here is a snap of it attached to one of my rigs.

And why are today’s primes as big as some zooms? 😡

Thanks



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Jan 13, 2022 12:25:20   #
Farm Boy Loc: Mendota Illinois
 
very good even shows a few dust spots

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Jan 13, 2022 19:55:56   #
imagemeister Loc: Stuart, Florida
 
All the reviews are very flattering - wish it was made in Sony A-mount !

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Jan 14, 2022 06:51:02   #
nimbushopper Loc: Tampa, FL
 
An f1.4 is a big piece of glass, no zooms are that fast.

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Jan 14, 2022 09:42:32   #
jayluber Loc: Phoenix, AZ
 
I love mine!!!!!! Use for landscape and MW.
OOOps - sorry - I have the 14-24.

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Jan 14, 2022 10:28:32   #
saxman71 Loc: Seattle
 
The two Sigma prime lenses I own are tack sharp. And neither one is an ART lens. If it's "cheap", in good working condition and you have use for a 24mm prime lens I think you should snap it up.

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Jan 14, 2022 13:25:48   #
Photec
 
Spirit Vision Photography wrote:
Hello

What is the popular consensus on this lens? It’s sharp, how often does it need calibrating, etc? I have the opportunity to acquire one very cheaply. Here is a snap of it attached to one of my rigs.

And why are today’s primes as big as some zooms? 😡

Thanks


(Simplified response) The f1.4 lenses allow 4 times the amount of light to enter the camera than a f2.8. Therefore, the full light path has to be 4 times the area of the f2.8. Making larger lens elements is also 4X harder to maintain the quality standards of smaller lens elements, and also add to the weight of the end product. If you require a quality low light lens, you have to pay for it in cash and strength for carrying it around.

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Jan 14, 2022 13:30:46   #
nimbushopper Loc: Tampa, FL
 
Photec wrote:
(Simplified response) The f1.4 lenses allow 4 times the amount of light to enter the camera than a f2.8. Therefore, the full light path has to be 4 times the area of the f2.8. Making larger lens elements is also 4X harder to maintain the quality standards of smaller lens elements, and also add to the weight of the end product. If you require a quality low light lens, you have to pay for it in cash and strength for carrying it around.



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Jan 15, 2022 01:33:04   #
guyweech Loc: southern Idaho
 
I like mine do some astrophotos with it seams sharp to me

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