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Ultra-Achromatic-Takumar 300mm F5.6 Review RSS Feed

Ultra-Achromatic-Takumar 300mm F5.6

Reviews Views Date of last review
2 38,430 Sun May 22, 2011
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Recommended By Average Price Average User Rating
100% of reviewers N/A 9.00
Ultra-Achromatic-Takumar 300mm F5.6

Ultra-Achromatic-Takumar 300mm F5.6
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Ultra-Achromatic-Takumar 300mm F5.6

Description:
This lens employs special lens elements made of quatz fluorite. The lens has a very high resolution and extremely low chromatic aberration in the entire spectrum from visible light to infrared.

Ultra-Achromatic-Takumar 300mm F5.6
© www.pentaxforums.com, sharable with attribution
Image Format
Full-frame / 35mm film
Lens Mount
M42
Aperture Ring
Yes
Diaphragm
Automatic, 6 blades
Optics
5 elements, 5 groups
Mount Variant
M42 Stop-down Pin
Check camera compatibility
Max. Aperture
F5.6
Min. Aperture
F22
Focusing
Manual
Min. Focus
485 cm
Max. Magnification
0.07x
Filter Size
58 mm
Internal Focus
No
Field of View (Diag. / Horiz.)

APS-C: 5.5 ° / 4.6 °
Full frame: 8.2 ° / 6.9 °
Hood
Case
Lens Cap
Coating
Weather Sealing
No
Other Features
Tripod Mount
Diam x Length
68 x 225 mm
Weight
825 g
Production Years
1968 (start of production)
Engraved Name
Ultra-Achromatic-Takumar 1:5.6/300
Product Code
43861
Reviews
User reviews
Notes
Built with glass and quartz flourite lens elements. High resolution and extremely low chromatic aberration. Designed for telephotography in visible and infrared light.
Features:
Manual FocusAperture RingFull-Frame SupportAdapter needed for DSLRsDiscontinued



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Author:
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Pentaxian

Registered: July, 2010
Location: Clermont-Ferrand, France
Posts: 363

1 user found this helpful
Review Date: May 22, 2011 Recommended | Rating: 9 

 
Pros: Sharpness, full correction
Cons: A bit slow, fluorite elements seem to be brittle

Fully corrected from 320nm to 850nm. Be careful : the front cap is dedicated to this lens and cannot be replaced with a 58mm metal one.
Visible : very sharp even at full aperture, with great color rendition. As the front element of mine is cracked, I don't know was is the best resistance to flare that the lens can give, but it seem to be very good (even in front of the sun I don't get crazy results). Pleasant bokeh.
UV (with B+W 403) : the lens shows some focus shift, not heavy, but enough to give a blurred image if you don't correct it. It seems to be as sharp as in the visible range on the test shots I've done.
IR (with Hoya R72) : I used it for two shots only yet, the comments would be the same as for UV
Samples : http://kajiwara.weebly.com/ultra-achromatic-takumar-30056.html
   
Junior Member

Registered: November, 2008
Location: Illinois
Posts: 40
Review Date: May 21, 2011 Recommended | Rating: 9 

 
Pros:
Cons:

Wrong lense
Add Review of Ultra-Achromatic-Takumar 300mm F5.6



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