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05-12-2018, 10:06 AM   #1
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Why is the 28-45mm lens so expensive?

I use legacy 55, 75 and 150 mm manual lenses and the 120/4 AF lens with my 645Z. The manual lenses were purchased for my 645 film version. which I still have. . I'd like to have the 28-45mm lens, but its price is daunting. Many cameras of all kinds cost less than the $4500 that this lens alone costs. You can find it used for less, but I'm usually leery of used lenses.


The lens gets great reviews, and I'd like to have it, but I think not for $4500.


JT

05-12-2018, 10:41 AM   #2
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It has dipped as low as $3799 new per our deal finder, as recently as late last year:

HD Pentax-DA 645 28-45mm F4.5 ED AW SR Reviews - 645 Zoom Lenses - Pentax Lens Reviews & Lens Database

Given the savings the 645Z brings, and the optical characteristics of the lens (including stabilization), I'd say it's priced fairly for the target audience. As you yourself pointed out, there are lots of more affordable film-era alternatives if your budget doesn't justify the new zoom.

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05-12-2018, 12:30 PM   #3
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a) Supply and demand.
b) Itʻs the widest lens for the 645D/Z and the widest zoom for ANY MF system. I shoot 35mm on my 645N and the 28mm end of the zoom has a similar fov on the Z as the 35mm does on the N.
c) No competition or wide angle prime alternative for Pentax.
d) Quality+SR+AW+ED.
e) Still less expensive than other system 28mm primes: Pentax (zoom) $4500; Mamiya $5000; Hasselblad $6100.
f) Hasselblad did announce a soon to be released 21mm for $3800 but the cheapest new Hassy will cost you another $6500.
05-12-2018, 01:00 PM   #4
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Manufacturing costs have to be fairly high due to the lens using 17 elements. More glass is used so the raw material cost is higher. Plus, more grinding is necessary, which adds up. Low dispersion glass (ED) is also more expensive than less exotic glass.

05-12-2018, 05:32 PM - 2 Likes   #5
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and after you buy one you will write back saying "why is this lens so heavy and big?"
05-12-2018, 06:29 PM   #6
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Heh, heh, and thanks for the replies. I've been warned about the size and weight, but I'm going to buy one, anyway.


JT
05-12-2018, 08:30 PM   #7
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I love mine. I paid half price used but like new.
05-12-2018, 08:58 PM - 1 Like   #8
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Besides its complexity, the fact that it is catering for a very small (in relative terms) niche market would also explain the high price. Not a large customer base to get back your R&D and production costs, plus make a profit.

05-12-2018, 09:11 PM - 2 Likes   #9
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QuoteOriginally posted by John Trammell Quote
I've been warned about the size and weight, but I'm going to buy one, anyway.
JT
Just for comparison:

Your 120 macro: 1.54 lbs.
The 400mm 645 FA: 2.76 lbs.
The 28-45mm DA645: 3.24 lbs.
Your 645Z: 3.4 lbs.

The average newborn baby is around 7 lbs, so think of your camera and new lens like shooting with a brand new baby (sans diapers).
05-13-2018, 01:01 AM - 1 Like   #10
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QuoteOriginally posted by Alex645 Quote
Just for comparison:

Your 120 macro: 1.54 lbs.
The 400mm 645 FA: 2.76 lbs.
The 28-45mm DA645: 3.24 lbs.
Your 645Z: 3.4 lbs.

The average newborn baby is around 7 lbs, so think of your camera and new lens like shooting with a brand new baby (sans diapers).
Nicely done!

05-13-2018, 01:33 AM - 1 Like   #11
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QuoteOriginally posted by Alex645 Quote
Just for comparison:

Your 120 macro: 1.54 lbs.
The 400mm 645 FA: 2.76 lbs.
The 28-45mm DA645: 3.24 lbs.
Your 645Z: 3.4 lbs.

The average newborn baby is around 7 lbs, so think of your camera and new lens like shooting with a brand new baby (sans diapers).
What does it eat, and how big does it get at full size? I hate to admit it but I haven't fed mine anything since I got it 3 years ago. I wait for a knock on the door as the lens welfare authorities come to take it into care.
05-13-2018, 03:06 AM   #12
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QuoteOriginally posted by unkipunki Quote
What does it eat, and how big does it get at full size? I hate to admit it but I haven't fed mine anything since I got it 3 years ago. I wait for a knock on the door as the lens welfare authorities come to take it into care.
She's a light eater, and being AW won't drink water, so I wouldn't worry about her gaining weight unless you want to protect her with a filter.
05-13-2018, 07:10 PM - 1 Like   #13
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What I can't decide is whether I wish I could afford a 28-45 or wish I could afford a 25. I think I might actually prefer the 25--thus far I've extremely impressed wtih the 35 and the 45 end of the 45-85.

Rick "wishing is all I can do--my wad is shot" Denney
05-14-2018, 07:11 AM - 1 Like   #14
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I'd love Pentax to come out with say an 18 - 35 for 645...others will care more about the size of the aperture, I'm not bothered. They can also leave our OS. I often forget to switch mine back on the my 28 -45 after it's been on a tripod...
05-14-2018, 01:53 PM - 1 Like   #15
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QuoteOriginally posted by Alex645 Quote
b) Itʻs the widest lens for the 645D/Z .
No, that would be the 25, or "rainbow unicorn hens' tooth", RUHT, aka "root". The 28-45 is the widest still manufactured.
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