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| Pentax SLR Lens Discussion Discuss any Pentax K-mount, screwmount, or medium format SLR lens, as well as filters and attachments. |
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| 09-21-2008, 09:27 PM | #1 |
| Pentaxian Location: Brunei Gallery Photos:
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Posts: 287 | Very interesting page about SMC PENTAX M*300mm f/4 While browsing the very interesting website of Marco Cavina, I stumbled upon a new page about Pentax 300mm telephoto lenses, from the M*300/4 until the most recent DA*300/4. Here's the link (a highly recommended read for those interested in lens design): SMC* PENTAX* M* 300mm f And here's the Googlish translation: Translation of page http://www.luciolepri.it/lc2/marcocavina/articoli_fotografici/Pentax_M_300mm_4_star/00_pag.htm Cheers! Abbazz |
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| 09-21-2008, 10:36 PM | #3 |
| Site Supporter Location: Toronto Gallery Photos:
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Posts: 3,745 | interesting they keep changing the formula, K, M/A, F/FA, DA |
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| 09-22-2008, 10:31 AM | #4 |
| Pentaxian | It is interesting indeed. It seems there was, scientifically at least a step backwards after the great gains in the KM and FA, though the improvements to minimum focus distance is a new achievment. In the '70s and '80s it seems to be #1 was the goal, where today keeping costs down is the order of the day. Different mindset producing products with different aims it seems. Last edited by thePiRaTE!!; 09-22-2008 at 06:11 PM. |
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| 09-22-2008, 12:24 PM | #5 |
| Senior Member Location: Dubrovnik, Croatia Gallery Photos:
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Posts: 203 | Don't forget that DA* is made for digital cameras, so that makes some difference in optical formula of lens. |
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| 09-22-2008, 04:37 PM | #6 |
| Pentaxian Location: Sydney, Australia Gallery Photos:
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Posts: 434 | Is the A* 300 f4 the same optics as the M? |
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