Fuji gets titanium, Olympus gets...plastic?

Started 3 months ago | Discussions
whumber
whumber Senior Member • Posts: 2,816
Re: Polycarbonates

JaKing wrote:

whumber wrote:

Zvonimir Tosic wrote:

Polycarbonates offer superior strength to weight ratio; for example, several days ago I admired a brand new racing car, body and interior fully constructed from polycarbonates. It weighs less that a comparable 'metal alloy' car, it is more manoeuvrable, faster and – safer too.

Polycarbonates alone don't offer a particularly impressive strength to weight ratio. It's when you use the polycarbonate as a binder to allow glass/carbon fibers to carry loads that they have excellent strength to weight properties. You'll find that no structural component in a racing car is made purely from polycarbonate. The only place you'll find pure polycarbonate is in the non-structural components of the car.

My E-510 and E-30 both had fibre reinforced covers. The E-510 also had similar chassis, with some metal plates. IIRC the innards of my E-30 were mostly/fully metal.

Regardless, more than ten years on, both work perfectly.

I wouldn't be at all surprised to find out that the plastic used in the E-M5iii is actually fiber reinforced.

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plantdoc Veteran Member • Posts: 3,571
Re: enough with the metal obsession
2

I think many modern aircraft, large and small, are made with substantial use of non metal materials.

Greg

JaKing
JaKing Senior Member • Posts: 6,063
Re: Polycarbonates

whumber wrote:

JaKing wrote:

whumber wrote:

Zvonimir Tosic wrote:

Polycarbonates offer superior strength to weight ratio; for example, several days ago I admired a brand new racing car, body and interior fully constructed from polycarbonates. It weighs less that a comparable 'metal alloy' car, it is more manoeuvrable, faster and – safer too.

Polycarbonates alone don't offer a particularly impressive strength to weight ratio. It's when you use the polycarbonate as a binder to allow glass/carbon fibers to carry loads that they have excellent strength to weight properties. You'll find that no structural component in a racing car is made purely from polycarbonate. The only place you'll find pure polycarbonate is in the non-structural components of the car.

My E-510 and E-30 both had fibre reinforced covers. The E-510 also had similar chassis, with some metal plates. IIRC the innards of my E-30 were mostly/fully metal.

Regardless, more than ten years on, both work perfectly.

I wouldn't be at all surprised to find out that the plastic used in the E-M5iii is actually fiber reinforced.

Neither would I. Olympus has been using just such materials for decades. In the 1970s, my f/4 35-70 OM lens body (among others) was made from just such materials.

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HaoAndHui Regular Member • Posts: 482
Body is still metal, only top and bottom plate are plastic
4

Based on the specs on this page:

https://www.dpreview.com/reviews/olympus-om-d-e-m5-iii-initial-review/5

Body material is Magnesium alloy, so I guess only the top and bottom plates are plastic, not sure why they don't use plastic for the whole thing so that it can be made even lighter.

My mother has a Mju 140 film camera, it feels like plastic but it has lasted for 10+ years, the camera isn't functioning but the build quality is good enough that its body is still as new.

I wonder if Olympus uses the same Dura coating on plastic top and bottom plates, what would it be like.

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cba_melbourne Senior Member • Posts: 1,522
Re: Body is still metal, only top and bottom plate are plastic

HaoAndHui wrote:

Based on the specs on this page:

https://www.dpreview.com/reviews/olympus-om-d-e-m5-iii-initial-review/5

Body material is Magnesium alloy, so I guess only the top and bottom plates are plastic, not sure why they don't use plastic for the whole thing so that it can be made even lighter.

No mention of it here though:

https://asia.olympus-imaging.com/product/dslr/em10mk3/spec.html

It is well possible the initial dpreview did not yet have all specs available, and simply assumed that it must be a metal chassis at this price point.

We simply cannot know for sure until Olympus tells us, or releases a picture of the interior.

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Wildalaskaken
Wildalaskaken Contributing Member • Posts: 912
Re: Fuji gets titanium, Olympus gets...plastic?
2

BurnImage wrote:

bluehighwayman wrote:

Wildalaskaken wrote:

orca_kkl wrote:

justmeMN wrote:

My shiny stainless steel revolver looks way better than a Glock.

The brushed SS revolvers from S&W look really nice!

Guns and cameras attract the same technical and opinionated crowd

After attending a hearing concerning guns I'd say that guns attract a very large proportion of fringe people not even remotely interested in things like cameras. Also a very high percentage of frightened individuals who need a gun to feel whole. Cameras are for capturing the essence of life guns are made for the destruction of it!

Luckily in the UK we don’t have guns. Knife crime is off the chart though. Both are evil. Camera are wondrous things......

Yeah cameras are never used for evil are they. Ask the victims of child pornographers. Ban them.

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Androole Senior Member • Posts: 1,448
Re: Body is still metal, only top and bottom plate are plastic

cba_melbourne wrote:

We simply cannot know for sure until Olympus tells us, or releases a picture of the interior.

Anyone feel like buying a new E-M5 III and sacrificing it to the Internet Gods so that we can find out what it's made of?

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whumber
whumber Senior Member • Posts: 2,816
Re: Body is still metal, only top and bottom plate are plastic
2

Androole wrote:

cba_melbourne wrote:

We simply cannot know for sure until Olympus tells us, or releases a picture of the interior.

Anyone feel like buying a new E-M5 III and sacrificing it to the Internet Gods so that we can find out what it's made of?

We just need that guy who scanned a bunch of m43 gear using an x-ray machine to take a look, .

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MrALLCAPS
MrALLCAPS Senior Member • Posts: 1,094
Re: Body is still metal, only top and bottom plate are plastic

whumber wrote:

Androole wrote:

cba_melbourne wrote:

We simply cannot know for sure until Olympus tells us, or releases a picture of the interior.

Anyone feel like buying a new E-M5 III and sacrificing it to the Internet Gods so that we can find out what it's made of?

We just need that guy who scanned a bunch of m43 gear using an x-ray machine to take a look, .

Well Robin wong, who works for Olympus said the body is all plastic. Maybe it has some kind of metal frame, but regardless, Olympus got cheap on the camera, but didn't pass the savings to the customer.

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Androole Senior Member • Posts: 1,448
Re: Body is still metal, only top and bottom plate are plastic
5

MrALLCAPS wrote:

whumber wrote:

Androole wrote:

cba_melbourne wrote:

We simply cannot know for sure until Olympus tells us, or releases a picture of the interior.

Anyone feel like buying a new E-M5 III and sacrificing it to the Internet Gods so that we can find out what it's made of?

We just need that guy who scanned a bunch of m43 gear using an x-ray machine to take a look, .

Well Robin wong, who works for Olympus said the body is all plastic. Maybe it has some kind of metal frame, but regardless, Olympus got cheap on the camera, but didn't pass the savings to the customer.

For what it's worth, Robin Wong has been frequently wrong on technical points. He made some claims about telecentricity in M4/3 a little while ago that are not at all supported by the Micro Four Thirds Consortium Whitepaper.

And he no longer works at Olympus. And when he did, he worked in sales, if I recall correctly.

He's seems like a good guy, and is a talented photographer, but I certainly wouldn't take his word as gospel on more technically nitty-gritty subjects. It's fine that that's not his forte.

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