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07-15-2014, 02:17 AM   #1
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Pentax 645d advise wanted please!


I am new to this site and would appreciate some advise about purchasing a 645d and suitable lenses for landscape shooting please.

I normally shoot mountain landscapes, mostly in Great Britain. I currently have a Canon 5dii which is on its last legs, and funds if I sell it and the lenses for a used 645d and some of the older lenses available on ebay.

I'd really appreciate users opinions on the best lenses.

I understand the old manual 645 lenses are very good, as are the 67 lenses too. The 67 lenses seem a little cheaper?

I wonder which ones members would recommend please?

I need (in 35 mm equivalent) the following:

Around 21-28 mm,
35 mm
50 mm
and one good zoom, ideally not a prime but something in the range of 70-300 mm if such a thing exists?

Any advise, particularly from people who might have made the shift from 35mm Canon to Full Frame, would be much appreciated,
many thanks!

07-15-2014, 02:55 AM   #2
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Take a look at our user reviews of the different 645 lenses. I think the list of most popular lenses speaks for itself, but you should also consider the DFA 55mm F2.8 to start out with, as it's a quality (modern) lens at an affordable price.

Pentax 645 Medium Format Lenses - Pentax Lens Reviews & Lens Database

Remember that the 645D system is "cropped" compared to film 645 cameras. The crop factor is 1.27x and here's a table of FOV equivalencies:

If you want a field of view equivalent to 21mm, you'd have to drop $5k on the Pentax 25mm F4:

SMC Pentax-DA 645 25mm F4 AL [IF] SDM AW Reviews - 645 Wide-Angle Primes - Pentax Lens Reviews & Lens Database

28mm would be more manageable, via the A or FA 35mm F3.5.

QuoteOriginally posted by greatgable Quote
and one good zoom, ideally not a prime but something in the range of 70-300 mm if such a thing exists?
Nope, all the zooms are 2x or less. If you want to use zooms (or telephoto lenses for that matter), stick to full-frame A good "everyday" zoom is the 45-85mm, but honestly you might as well pick one prime in that range and roll with it.

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07-15-2014, 04:38 AM   #3
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Welcome to the forum, there is also a thread link below which you may find of interest.

Pentax 645D and Medium Format -
07-15-2014, 08:14 AM   #4
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I'm very happy with the 5d, but as it is starting to misbehave it is time to consider if I want to go for medium format when I change it. I think using a MF will add discipline to my work and the colours the 645 seems to produce are very attractive.


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