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06-13-2013, 08:48 PM   #1
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Need dimensions of HOOD for Tele-Takumar 300mm f6.3

Just what it says on the tin. I got a minty Tele-Takumar 300mm f6.3 with filter and original caps (Asahi Takumar) but no hood. Would like to find a replacement, but need to know the dimensions. Thanks in advance.

06-13-2013, 09:08 PM   #2
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QuoteOriginally posted by cheekygeek Quote
Just what it says on the tin. I got a minty Tele-Takumar 300mm f6.3 with filter and original caps (Asahi Takumar) but no hood. Would like to find a replacement, but need to know the dimensions. Thanks in advance.
Hi, from my experiences in meddling with hoods and even using step-down rings to serve the same functions as a hood does; blocking of stray lights, these are what i derive, without vignetting.

Longest hood length possible:

Crop Factor x FL = 1.5 x 300mm = 450mm = 45cm hood

If using step down ring as hood:

FL / max aperture = 300mm / 6.3 = 47.619 = ~47mm filter ring minimum

Have fun!
06-13-2013, 10:40 PM   #3
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They are: 8.2 (lenght) X 7.0 (front diameter) cm. regards
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Last edited by jt_cph_dk; 06-14-2013 at 03:29 AM.
06-14-2013, 12:59 AM   #4
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There is a site were you can find printable lens hood, for different camera sistem and lenses:

Free printable cardboard lens hoods

06-14-2013, 02:55 AM   #5
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QuoteOriginally posted by jt_cph_dk Quote
They are: 8.2 (length) X 7.0 (front diameter) cm. regards
I concur -just measured my orig. copy.

Complete profile: Cylindrical tube part is 6.7cm long. Tube above filter threads is 6cm in diameter and 0.5cm in length. Step from ring to conic portion of hood is 0.1cm. coni portion is 0.8cm long.
06-14-2013, 08:54 AM   #6
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Thanks all. You guys are great!
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