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04-29-2010, 07:13 AM   #1
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Pentax 645D: Equivalent focals (35mm)

Equivalent 35mmFF focals for the Pentax 645 existing lenses on the 645D:

http://i.pbase.com/g3/50/276250/2/124042570.Gla8Z1Z1.jpg


Ramón


Last edited by Ramón; 06-02-2010 at 09:36 AM. Reason: broken link
04-29-2010, 07:24 AM   #2
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sorry:
QuoteQuote:
Forbidden

You don't have permission to access /o2/50/276250/1/124042570.TobCsfQ4.PENTAX645EQ7.jpg on this server.
04-29-2010, 09:16 AM   #3
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Perhaps something changed? I got the page without problems. Many thanks - at first I had to get used to what the conversion is, but now I understand. How's the 1.4 converter doing, btw?
04-29-2010, 09:20 AM   #4
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04-29-2010, 09:36 AM   #5
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QuoteOriginally posted by Smolk Quote
Perhaps something changed? I got the page without problems. Many thanks - at first I had to get used to what the conversion is, but now I understand. How's the 1.4 converter doing, btw?
The 1.4 is not bad, but I prefer to use the 300/4 and the 600/5.6 without it (note:I don't use my 645 system since 2003, waiting the 645D for the resurrection of my eight 645 lenses). I have the canon 500/4 L and use the 1.4 Canon 30-40% of the time.

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05-02-2010, 09:23 AM   #6
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The real crop factor is 0.78 (~0.8)
05-02-2010, 02:04 PM   #7
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QuoteOriginally posted by ogl Quote
The real crop factor is 0.78 (~0.8)

The crop factor (or focal length multiplier) 645/645D is 1.27

The "focal length multiplier" 35mm/645D is 0.78 (0.7867) (diagonal) as you can see in the table.

Ramón
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