Great optical quality

With the Fotodiox adapter, I have learned that the Mamiya RZ67 lenses are really great in their optical qualities. This was already known when using analog film - but somehow I read that the lenses exhibit chromatic abberations when used with digital sensors.

However, I consider this to be a bit exaggerated - because the Mamiya Sekor Z lenses show clearly LESS chromatic abberations compared to Pentax 6x7 lenses (except the renewed Pentax lenses with ED glass elements added). However the latter are few, only employed in the modern long lenses for the Pentax 6x7 system).

While on the Mamiya RZ67 side, I felt that the ordinary lenses, had rather little chromatic abberations. Sure, the Sekor Z 110/2.8 and Sekor Z 150/3.5 showed a little bit when used wide open. Also the Sekor SHIFT Z 75/4.5 had it.

But the others wer really fine.

When stopped down - basically no chromatic abberations. They were all very sharp stopped down ! Making it fantastic optical performers.

I really love to work with them

Despite being bulky and heavy - and without helicoid mechanism - those lenses are amazing. The biggest surprize was the flexible Mamiya Sekor SHIFT Z 75mm ƒ4.5 lens ! What a joy to work with that monster lens. Being able to make 100-115 MP panoramas. I guess I never thought of that in any serious way.

Shift bellow adapters - also a possibility

Of course, if you have an adapter that allows shift/tilt functions, such as the Bellow solution from NOVOFLEX, you can use ALL Mamiya lenses as shift lenses, and stitch 3 images into a larger images. Novoflex has a bellow adapter without shift, and one with shift. Albeit the latter brings the total price to something like 1300 €, or 14500 SEK.

Since I already have the ROTATING VERTEX adapter for Pentax 67 lenses adapted to the Fujifilm GFX - i feel satisfied with being able to make larger images, utilizing the entire original, larger image circle of the Pentax 67 lenses. I don't need that necessarily to accomplish that with Mamiya RZ67 lenses, as well. The Vertex + Pentax 67 lens solution, is so smooth working - that I prefer so work like that, specially outdoors, i think it is a far more neat solution, compared to anything else.

But I do need a SOLID adapter for the Mamiya lenses - one that doesn't bend or fail.

The Fotodiox RZ/GFX adapter is catastrophic with its weak design, its stupidly soft, small screws - and the choice of putting the center of gravity in the (wrong) position, which put all the lens weight onto the helicoid mechanism. I mean what the fuck, really !

What's up with that, designers ?

If I can figure that out without being a mechanic - then there must be tons of far more intelligent designer/mechanics that could/should be able to figure it out, that the Fotodiox adapter design is a very bad design from the beginning.

Do modern startups sometimes lack something that the old, more mechanical smaller companies had in the past like the 70s ?

It sometimes appears to be, that despite many startups being so extremely nifty, creative and driven - creating many fascinating new products, often "think outside the box" ... but at the same time, tend to forget more ground-up, solid understanding of mechanics (I call essentials, or essential rules) in material and how things actually work and doesn't work ! Or is it a matter of different priorities ? Tunnel vision ?

I don't know the minds behind...

That designs being pushed by too wishful thinking and a sense of "genius practical" - but somehow also seem to lack mechanical solidity tests and proof. So, their products fail in rather important areas. A product weakest link ?

Although something tells me that they often are practical oriented. But where do the misses come from ?

VALOI

with the lack of flatness in cut negatives stripes, due to the "free floating" negative holders, which in no way really hold the negatives flat - unless the whole film is or remains uncut.

Nobody stores uncut 120-films... Everybody will eventually cut them down. But then the integrity of flatness is compromised with the VALOI Easy120 scanning device. People do rescan negatives, when they get better cameras. But you negatives are cut down. Ooopsi.

So, in effect this limits the group of people who would have true use. After all, it is VALOI's most expensive scanning product ?! For heavens sake, create holders that can keep negatives flat. That is a No 1 rule for anything you scan. Always has. Always will and should be.

FOTODIOX

with a wrong design of weight distribution between heavy RZ67 lenses and adapter / wrong center of gravity - and using just two futile small, soft screws which ultimately are doomed to bend - yet are destined to hold everything; several kilos of weight from camera + lens.

Why didn't they just weld the adapter-foot and the adapter-body together, or making straight from ONE SINGLE metal piece ? I mean the adapter is anyway non-rotatable, so nothing will be move anyway. Weld it together permanently so that it never, ever bends. My suspicion is, that the adapters are made in China. Not in the US. Just saying.

SNAP, BABE, SNAP !!

Perhaps wishful thinking in today's startup creations - creating too many blinds spots ?

The old welders and mechanics knew their shit !

Makes me appreciate those old generation of welders, builders and mechanics who really understood something about metal, stone, materials, structures. Repaired mechanical cars and had many ideas how to fix things, and at times created solid hacks and practical solutions. They built our nations in a solid way. They understood reality better, than today's CAD designers think they do.

Who the fuck uses tiny, soft screws which have to hold up 2-3 kilo weight ?

It reminds me of Chinese products, which instead of using a nail in order to hang up something - implying that you can wonderfully put a glue-patch onto to the wall instead - and wow - your product "stays on the wall". NOT !

Seriously, fucktards ?!