Promaster 18-200mm and Tamron 18-200mm

Started Jan 4, 2010 | Discussions
johnnyz86
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Promaster 18-200mm and Tamron 18-200mm
Jan 4, 2010

Please state the relationship between these two lenses for me:

Promaster 18-200mm Digital XR EDO Aspherical Auto Focus Zoom Lens for Pentax

Tamron AF 18-200mm f/3.5-6.3 XR Di II LD Aspherical (IF) Macro Zoom Lens for Pentax Digital SLR Cameras

 johnnyz86's gear list:johnnyz86's gear list
Tamron SP AF 70-200mm F/2.8 Di LD (IF) MACRO Pentax smc DA 70mm F2.4 AL Limited +3 more
MightyMike
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Re: Promaster 18-200mm and Tamron 18-200mm
In reply to johnnyz86, Jan 4, 2010

its extremely likely that the Promaster is a clone of the Tamron, but i doubt Promaster would ever admit that. however if you're looking for a super zoom save up for the Pentax/Tamron 18-250 as i do believe its the best of the bunch
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Mike from Canada

'I like to think so far outside the box that it would require a telephoto lens just to see the box!' ~ 'My Quote :)'

http://www.airliners.net/search/photo.search?sort_order=views%20DESC&first_this_page=0&page_limit=180&&emailsearch=mighty_mike88%40hotmail.com&thumbnails=

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Ed Woodson
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Re: Promaster 18-200mm and Tamron 18-200mm
In reply to johnnyz86, Jan 4, 2010

When I first got back into Photography in 2006, my local dealer sold me a Promaster 70-300 zoom. A couple of weeks later I ran across another Pentax shooter who was using the the Tamron 70-300 zoom. We did a rather close comparison and concluded that the Promaster was/is a re-badged Tamron. All of the specs are exactly the same. I suspect that the same applies to the 18-200 zioom.
--

'The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?'

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johnnyz86
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Re: Promaster 18-200mm and Tamron 18-200mm
In reply to MightyMike, Jan 4, 2010

Thanks, I am looking for information on these specific lenses and whether or not they are the same.

 johnnyz86's gear list:johnnyz86's gear list
Tamron SP AF 70-200mm F/2.8 Di LD (IF) MACRO Pentax smc DA 70mm F2.4 AL Limited +3 more
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MightyMike
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Re: Promaster 18-200mm and Tamron 18-200mm
In reply to johnnyz86, Jan 4, 2010

the Promaster could be a copy of the Sigma 18-200 also, take a good look at the specs
--
Mike from Canada

'I like to think so far outside the box that it would require a telephoto lens just to see the box!' ~ 'My Quote :)'

http://www.airliners.net/search/photo.search?sort_order=views%20DESC&first_this_page=0&page_limit=180&&emailsearch=mighty_mike88%40hotmail.com&thumbnails=

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johnnyz86
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Re: Promaster 18-200mm and Tamron 18-200mm
In reply to MightyMike, Jan 4, 2010

Tamron AF 18-200mm f/3.5-6.3 XR Di II LD Aspherical (IF) Macro Zoom Lens for Pentax Digital SLR Cameras

http://www.amazon.com/Tamron-AF-18-200mm-Aspherical-Pentax/dp/B0007WK8NK/ref=sr_1_1?ie=UTF8&qid=1262621831&sr=8-1-fkmr0

Specifications

  • Focal length: 18-200mm

  • Maximum aperture: f/3.5-6.3

  • Lens construction: 15 elements in 13 groups

  • Angle of view: 75 to 7 degrees

  • Type of zooming: Rotation

  • Diaphragm blades: 7

  • Minimum aperture: f/22

  • Minimum focusing distance: 17.7 inches

  • Macro magnification ratio: 1:3.7 (at f=200mm)

  • Filter size: 62mm

  • Corresponding mounts: Pentax

  • Lens hood: Yes, flower shaped

  • Dimensions: 2.9 inches in diameter and 3.3 inches long

  • Weight: 14 ounces

  • Warranty: 6 years

PROMASTER ®
18-200mm Digital XR EDO Aspherical Auto Focus Zoom Lens
http://www.promaster.com/products/products.asp?product=AF18200

Specifications:

• Enhanced Digital Optic Design
• Lens Construction: 15 Elements in 13 Groups
• Lens Coating: Multicoated
• Angle of View: 75-7°
• Minimum Aperture: f/22
• Minimum Focusing Distance: 17.7 in (0.45m)
• Maximum Magnification: 1:3.7 (at 200mm)
• Zooming System: Rotary
• Weight: 14 oz.
• Diameter x Length: 73.8mm x 83.7mm
• Filter Size: 62mm
• Bayonet lens hood included
• Lifetime Warranty

Sigma 18-200mm F3.5-6.3 DC

Lens Construction

http://www.sigmaphoto.com/lenses/lenses_all_details.asp?id=3302&navigator=6
15 Elements in 13 Groups
Angle of View 69.3 - 7.1 degrees (Sigma SD format)
Number of Diaphragm Blades 7 Blades
Minimum Aperture F22
Minimum Focusing Distance 45cm / 17.7 in.
Maximum Magnification 1:4.4
Filter Size Diameter 62mm
Lens Hood Petal Hood
Dimensions Diameter 70mm X Length 78.1mm
2.8 in. x 3.1 in.
Weight 405g / 14.4 oz.

 johnnyz86's gear list:johnnyz86's gear list
Tamron SP AF 70-200mm F/2.8 Di LD (IF) MACRO Pentax smc DA 70mm F2.4 AL Limited +3 more
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Ed Woodson
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Re: Promaster 18-200mm and Tamron 18-200mm
In reply to johnnyz86, Jan 4, 2010

Looking at the specs, I'd say that the Promaster and Tamron are the same.

biggest difference you'll find. a year or two down the road, the Tamron will have a much greater re-sale value than will the Promaster.
--

'The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?'

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KentG
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Re: Promaster 18-200mm and Tamron 18-200mm
In reply to johnnyz86, Jan 5, 2010

Yes the Promasters are all rebadged Tamrons while if I remember correctly the Quantaray lenses were all rebadged Sigmas. I have a Tamton 18-200 that I bought before the 18-250 or 18-270 cameout. I am pretty sure the 18-250 is a better but more expensive lens. I use mine for one lens travel only because if I can carry at least 2 then the Pentax 18-55 AL II and the 55-300 ED will give me better results. In fact the Tamron SP 24-135, which is a FF lens, gives much better results than the 18-200 as long as you don't need the extra range.
Kent Gittings

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