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11/29/2006 08:08:35 PM · #1 |
For example.
I have been looking at getting this one.
Pentax Zoom Normal-Telephoto SMCP-DA 50-200mm f/4-5.6 ED Autofocus Lens for Digital SLR
As I shop around to see what other choices I have I see this and think, great 300mm f/2.8 and then I see the price. Wow!!
Sigma Telephoto 300mm f/2.8 EX DG Autofocus Lens for Pentax for $ 2,599.00!!
It seems like anything with a larger aperature has a higher price tag.
Why is that?
Does it really cost anymore to make?
Just wondering... |
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11/29/2006 08:11:38 PM · #2 |
Quite a bit more.. large aperture lenses, especially those with constant f settings are quite a bit larger than smaller and variable aperture lenses. They are also more complex.
The Sigma you are looking at is also a "pro" lens as shown by the EX designation.
Message edited by author 2006-11-29 20:11:54.
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11/29/2006 08:15:52 PM · #3 |
MMMMMMMM, yummy. I'm a Sigma pro-ponent. EX, though designated as a 'pro' lens, is still (for the most part) priced so a 'non-pro' can still afford it........except for that one GRRRRRRRRRR
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11/29/2006 08:16:34 PM · #4 |
And it's a prime 2.8, you could hook that sucker up to a 2xTC and have a fairly good solution for long range sports shootin. (In good light)
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11/29/2006 08:19:42 PM · #5 |
Yeah, it does cost more.
Take two cars, both will get you from A to B.
One's a no frills subcompact and costs under $10K brand new.
The other's a exotic sports car with a price tag well into 6 figures.
Do you think the two cars cost the same to make? |
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11/29/2006 08:19:46 PM · #6 |
Originally posted by wavelength:
And it's a prime 2.8, you could hook that sucker up to a 2xTC and have a fairly good solution for long range sports shootin. (In good light) |
That brings up another question. :)
I keep seeing and reading about "prime" lens.
What does prime mean? |
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11/29/2006 08:22:01 PM · #7 |
Prime means it is a fixed focal length. ie, it has no zoom capability. Now, you may think "what's the point?" however, you will find a lot of primes are
1. very fast with apertures going upto 1.2 (and in extreme cases 1.0)
2. Higher precision optics. Resulting in sharper images. |
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11/29/2006 08:25:27 PM · #8 |
| More expensive lenses tend to have more (and much larger) lens elements, exotic glass types, better construction, faster and quieter focusing, and in some cases weatherproof seals and image stabilization. |
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11/29/2006 08:29:21 PM · #9 |
Now I understand, thanks!
So many to pick from and so little money for them, lol... |
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11/29/2006 08:30:16 PM · #10 |
Originally posted by lakota:
Now I understand, thanks!
So many to pick from and so little money for them, lol... |
Yes, such torture can come from this field.
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