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02-08-2013, 01:30 PM   #16
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It might be that the P645Nii has a system that when you re-insert the mid-roll insert it can remember which frame it was on when ejected but if not then what I think was being said is that on re-insertion the camera assumes that it has a new roll and therefore winds on as it would with a new roll so the loss of frames is appreciable and maybe if you were already on frame 12 it would wind on to, say, frame 15 and you might as well not have bothered to re-insert the mid-roll insert

As far as I am aware the P645N doesn't have any means of remembering which frame it was on when the insert was taken out mid-roll

What might work but it is cumbersome and requires a changing bag or darkroom is to remove the insert mid roll with the camera in the changing bag then release the spindles and handwind the roll back to the start. As long as you make a note of the frame it was on you can reload as if it was a fresh roll and fire with the cap on until you get to the frame which is one beyond where you had stopped to make sure there is no overlap.

I think this would work but if you were on or beyond frame 10-12 it might not be worth the effort

I have never tried any of this so it's just a theory. Anyone else care to comment on this issue of re-using a mid-roll insert ejection?

asahijock

02-08-2013, 07:14 PM   #17
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QuoteOriginally posted by asahijock Quote
camera assumes that it has a new roll and therefore winds on as it would with a new roll
That is where the Multiple exposure feature is so useful, it should be able override the winding mechanism.

This is all largely academic, I still think the Pentax 67 would be the best way to go for this. Al0though I have never used the adapter to use 67 lenses on my 645, but knowing how those two systems work I don't think there would be many limitations apart from manual focus.

Last edited by Digitalis; 02-08-2013 at 07:19 PM.
02-08-2013, 09:16 PM   #18
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You want a "nice big negative". Arguably the 6x4.5 frame on a 120 roll is the APS-C of medium format film.
02-08-2013, 10:50 PM   #19
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QuoteOriginally posted by tuco Quote
You want a "nice big negative". Arguably the 6x4.5 frame on a 120 roll is the APS-C of medium format film.
That was my impression when I had use of a 645N a year or so ago. I loved the camera and the way it handled and the viewfinder! Yes, the viewfinder! Unfortunately, I also had experience with the 6x7 format from the roll film holders I use with my view camera. Comparing the quality of the two and there is, well, no comparison. The 645 negative is noticeably better than 35mm in that grain pretty much disappears and skies are amazingly clean looking, but the incredible detail and tonality from the 6x7 negatives is simply not there.

I was incredibly sad. I loved the 645N. I wanted the 645N. I decided to not get the 645N. Does that mean I would get the 6x7/67? I don't know. It is a truly beasty-large camera. What I want is a 6x7 rangefinder like what Tuco has! (Or maybe a Bessa...)


Steve

02-09-2013, 02:45 AM   #20
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Hmm, another interesting point to take into the calculation indeed!

Anyone else with experiences of the two different negative sizes who have further reflections regarding this?

I have no prefs really for the machine itself, the only thing that scared me about the 6x7 was the unreliability mentioned earlier in this discussion, and yeah, inserts for changing rolls sounds more convenient than having to roll up a new roll after 15 shots, but I guess that files under "habit adaptation" ..




Cheers
JF Felinik
02-09-2013, 10:30 AM   #21
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QuoteOriginally posted by JFN Quote
new roll after 15 shots
15 on the 645...only 10 on the 6x7


Steve
02-09-2013, 11:08 AM - 1 Like   #22
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Hi JFN,
If you want to use P67 lenses, you are not necessarily restricted to a P67 body.
Maybe there is a Euro equivalent to this 4 by 5 that takes the international 120 back and has a lens board big enough for the P67 bayonet.
Here I get 8 shots of 6 by 9 . Actually this particular P67 lens covers 6 by 9 cm with reasonable corner sharpness, but they can be cropped back to the native 6 by 7 cm.
For hobby use, the bigger the negative is, the easier it is to maintain the fidelity whether scanning or enlarging.
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02-09-2013, 12:13 PM   #23
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QuoteOriginally posted by Digitalis Quote
That is where the Multiple exposure feature is so useful, it should be able override the winding mechanism.

Could you expand on this and how it works or are you like me and thinking things out in theory? If you have actually tried this and found it works that is great, hence my request for a fuller explanation. The 645, 645N and 645Nii are all great cameras but lack of interchangeable backs is a drawback. Any method which overcomes this or alleviates it is useful and certainly when making a choice of which camera to get it is in my opinion pertinent information

Thanks

asahijock

02-09-2013, 01:09 PM   #24
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QuoteOriginally posted by wombat2go Quote
Maybe there is a Euro equivalent to this 4 by 5
You mean like the Speed Graphic with a focal plane shutter?


Steve
02-09-2013, 01:14 PM   #25
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Yes, Steve, it would need a fp shutter and a lens board of at least 90 by 90 mm.
I don't know enough about euro large formats to know if there was ever such a thing, or how available the Speed Graphics are in EU.
I never used a P67 body but i imagine a Speed might actually be easier and more versatile after the learning curve, particularly on a tripod.
02-09-2013, 01:15 PM   #26
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A small note regarding the inserts for the 645...Film load on these is extremely easy and fast. Truly!

I think the rational was that the photog on location (doing, say, a wedding) would have an assistant to help with gear. At end of roll the photog would do a quick switch of inserts and the assistant would keep busy keeping these loaded and ready for use.

If mid-roll switching is a requirement, there are other good cameras that support this feature.


Steve
02-09-2013, 02:21 PM   #27
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I'd agree. If hot-swapping backs is an important feature, I'd investigate further.

Some generalities about MF film cameras is you need more than one if you want optimisation it seems. And if you find yourself committed to the medium for long term, you might want to think of your first purchase differently.

I think both a 645N and P6x7 would be good combo to have. Shoot 645 for the more dynamic situations and the 6x7 in when you have time for a more methodical approach. I approach shooting my Pentax 6x7 more like my 4x5. I strip the 6x7 down to a waist level finder ( batteries last for a very long time then), usually use a tripod and meter with a one-degree spot meter. When that is too slow, I reach for another camera.
02-09-2013, 03:31 PM   #28
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JFN- Your concerns about the reliability of the 67 are unwarranted unless you buy a well used one. Just get a mint 67 or 67II- not a problem.
02-09-2013, 04:19 PM   #29
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Very nice, the large format thingie there, though I think I'll probably stick to the other ones, and after following the discussion here I kind of feel that maybe the 67 is the way to go after all!

So, differences, 6x7, 67, 67II ?




Thanks guys!!!


Cheers
JF Felinik
02-09-2013, 04:41 PM   #30
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QuoteOriginally posted by JFN Quote
Very nice, the large format thingie there, though I think I'll probably stick to the other ones, and after following the discussion here I kind of feel that maybe the 67 is the way to go after all!

So, differences, 6x7, 67, 67II ?




Thanks guys!!!


Cheers
JF Felinik
I would read the PF reviews of each 6x7 body:

Pentax 6x7 Medium Format - Pentax Pentax Film Cameras - Pentax Camera Reviews and Specifications

If you like all manual cameras then go for the 67, if you are used to DSLR's then the 67II might be better for you. Just note that the 6x7 & 67 use a different TTL metered prism than the 67II.

Phil.
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