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05-25-2011, 05:36 AM   #1
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keep my almost mint pentax 645 or move to a 6x7

For the past 5 months or so Ive been shooting a 645, and I finally was able to pick up a 6x7 for a really good price with a 105mm and a 135mm macro. My question is will I see much change with my photos? I love printing larger and that's why I moved to a 645, but Ive also heard that the 67's are harder to get a good shot with shooting under 1/125 why is that? I mean I understand its kind of low but ive gotten some useable shots with my 645 at 1/15 hand held.

05-25-2011, 05:49 AM   #2
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The 6x7 has a much larger and heavier mirror (and shutter for that matter), so it will vibrate more and thus induce camera shake. Depending on what lens you use, I'd say you can shoot down to 1/60 without very noticable effect. If you've got steady hands of course.

The old rule of using a speed equivalent to the reciprocal of the focal length works fine.

Edit: On the other hand, if larger prints is the reason for getting a 6x7, you'll probably want to use much faster speeds than that to see any difference in resolution from 645.
05-25-2011, 08:56 AM   #3

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There is no reason you can't have both. There is nothing wrong with collecting older camera gear if you're getting it at a good price. When it comes to enlargements, negative size matters with film given everything else is equal. So you can expect an incremental improvement in that area.

I've always heard the rule-of-thumb was the reciprocal of two times the focal length. I guess that rule puts in a safety factor. Even with 135 format, if you wanted your sharpest shot you'd use a tripod.
05-25-2011, 07:36 PM   #4
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okay I see. I got the 6x7 today and I must say its a amazing piece of engineering. The meter is acting a little funky but I am going to take it to a local shop and see if its a quick fix or not.

and as for having the two systems I really like the 645 much more it fits in the hands great, the and also the one that I have has been taken care of very well in the past, but well see I may end up selling my digital gear two fund for more lenses

05-25-2011, 08:02 PM   #5
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You might want to consider a 67 lens to 645 body adapter. Have something wide just for the 645 and then use the short to medium telephoto 67 lenses on both systems.
05-26-2011, 03:43 PM   #6
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hmmm well I may end up selling the digital gear its getting alot less use then the medium format bodies which is very strange
05-26-2011, 09:50 PM   #7
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QuoteOriginally posted by yurihuta Quote
You might want to consider a 67 lens to 645 body adapter. Have something wide just for the 645 and then use the short to medium telephoto 67 lenses on both systems.
Good idea.
Nothing wrong with using the two different systems in different ways that still complement each other. You could use the 645 when you want the convenience that it might give you, and the 6x7 when you want the bigger negative.
By the way, I shoot my 67 handheld all the time and I'm generally happy with the sharpness of my photos.
05-27-2011, 01:18 AM   #8
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I was kind of on the same track with you - except I started from a 67.
Used the 67 for a month and decided to get a body as a back-up. I didn't want to buy a 67-2(too expensive-and I have one stashed for future already, bought new 4 years ago), and then a new 645n showed up - so I jumped at it. Bought the 67-645 adapter and am using one set of lenses with those bodies. In fact, the first lens I bought for 645 system was only a week ago-full 6 months after the 645n itself.

From my point of view, a 67 and a 645 are a great pair of bodies to have as they substitute one another perfectly. Depending on what I'm shooting I; using either or. Weird to shoot street events with the standard 67(without A-priority) - and only 10 frames per roll+it's not the fastest-loading camera, but here's where the 645 excels. On the other hand, when I came to Yosemite and there was a storm which suddenly finished and left absolutely gorgeous, once-in-a-lifetime views, I was happy that I had the 67 on me. I also had a 6x17 but that's another story Majority of the keepers were shot on the 67 though..

To sum it up, I'd keep both bodies, but the adapter and look at the 67 lenses.
With current prices they look like a great substitution for the 645 ones-while being of the same exceptional quality, if not better
PS Sorry for a lengthy post, I hope the info will help

06-02-2011, 08:49 AM   #9
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Having a 645 and a 67 I can stat that the character of these cameras is vey different and I decide case by case which I take for what shooting.
I have a 67->645 Adapter and currently reduce my lens count a little bit by selling the redundant lengths. The Addapter is usually quite expensive but 6x7 lens are often much cheaper than 645 lens so you save money later. For example the 45/4 on the 6x7 is a nice extrem wide angle (~14mm digital) and an normal wide angle (~18mm digital) on the 645.
On the other hand: Everything longer than 200mm (~65mm digital) for the 6x7 is a nightmare in price and weight.

So keep both and get a adapter

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