HowaboutRAW

Joined on Sep 1, 2011

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In reply to:

HowaboutRAW: From the looks of it, that lens has a leaf shutter built into it.

Therefore this guy printed a box, which is light sealed when closed, and can hold film and mount a lens/shutter system.

Martin:

"Well, I'll just wait for you to put the equivalent design together with tape, panels, glue and a box."

You misunderstand, no need of "and a box", the panels are used to form the box, the glue and the tape, hold it (that resulting box) together, the tape can also act as an hinge.

"Perhaps I'll go and print my own camera while I wait. :D"

This line tells me about how well you've understood my point.

And again, the third time now: This guy did NOT print a camera. He printed a box, to which he attached a shutter and a lens.

Link | Posted on May 27, 2017 at 02:38 UTC
In reply to:

HowaboutRAW: From the looks of it, that lens has a leaf shutter built into it.

Therefore this guy printed a box, which is light sealed when closed, and can hold film and mount a lens/shutter system.

Martin:

First you commented below a comment of mine, in a thread I started.

The obvious inexpensive way to make this as a plastic box, is with straight panels, glue, and gaffers tape, it will work just as well as this device.

"I regularly make 3d printed parts, that are used and watertight. I am fairly certain it's a lot cheaper than getting a custom mould set up for injection moulding. As in orders of magnitude cheaper."

Use varies by application. If your parts are watertight, and inexpensive, they are likely very small.

"Well, let us know when you can recreate the above camera, using conventional manufacturing.".

Again: This isn't a camera, it's a camera body, for holding film. See above about plastic panels, glue and tape for how to make a box very similar to this one inexpensively.

(Yes, if you want the sides to slope, completely unnecessary for the function, you'll have to know how to draft.)

Link | Posted on May 27, 2017 at 02:18 UTC
In reply to:

HowaboutRAW: From the looks of it, that lens has a leaf shutter built into it.

Therefore this guy printed a box, which is light sealed when closed, and can hold film and mount a lens/shutter system.

Martin.au:

Never said "3D printing is an answer to a non-existent problem", that's something you've made up for me.

"but without 3D printing, it wouldn't exist." Why not? Boxes have been built out of plastic for decades--really 2000 years but that's a different story.

"However, where 3D printing also excels is in making things that are never going to be manufactured because conventional manufacturing techniques require volume to offset cost."

3D printing parts, that can be used, and are say watertight, is not as inexpensive as you imply.

"It would be like me griping that someone's cupboard that they made with their woodworking skills wasn't sufficiently complex, and on top of that, I don't like their chisels."

Not at all sure how you got here. But sticking with the cabinet analogy, it's as if someone made a kitchen cabinet with a 3D printer, instead of simply purchasing the wood and joining it.

Link | Posted on May 27, 2017 at 01:45 UTC
In reply to:

HowaboutRAW: There's much to like about the A99II and the A9.

But the A99II still needs better lenses, more of them.

And given that the A9 is supposed to compete with the likes of the Nikon D5 and Canon 1DS Mark II, the A9 body is too small.

A bigger body would allow for better heat dispersion, so the A9 could actually be shot at ISO 50k.

(As it is, the A9 stops being useful at about ISO 30K, mechanical shutter--raw, which is about Nikon Df territory, or Leica SL. It's big colour blotches that are the issue, not conventional noise/grain.)

It's an error on the part of Sony that the A9 can't remain mounted to a tripod head and still allow the battery to be swapped. The D5, 1DX II and the Fuji GFX-50S don't have this basic flaw.

The A9's mechanical shutter frame rate is too low for a "pro" body.

jonny:

Right, however this A9 is targeted at the pro users, who now shoot D5s and 1DXIIs.

Can't really tell how durable the A9 is without much real world abuse.

Right, the buttons are too closely spaced for anyone with normal to large hands. But it's better than the A7RII.

Link | Posted on May 27, 2017 at 00:21 UTC
In reply to:

HowaboutRAW: From the looks of it, that lens has a leaf shutter built into it.

Therefore this guy printed a box, which is light sealed when closed, and can hold film and mount a lens/shutter system.

Martin.au:

How so?

Link | Posted on May 27, 2017 at 00:01 UTC
In reply to:

HowaboutRAW: From the looks of it, that lens has a leaf shutter built into it.

Therefore this guy printed a box, which is light sealed when closed, and can hold film and mount a lens/shutter system.

3D printing is great for making a prototype of an item you intend to mold in plastic--like this "camera".

But in reality, of course, if anyone decided to mass produce this body an injection mold would be cut out of aluminum.

Where 3D printing excels is parts with complex internal curved spaces that could never be machined for a mold, or machined directly into the final metal product.

Right, I understand, its a basic lens/shutter that can focus light at the depth of a standard bellows camera.

(Of course the bellows can be replaced by a plastic box, a wooden box, or a metal box--provided these boxes can be sealed so light does not enter, except via the shutter.)

Link | Posted on May 27, 2017 at 00:00 UTC

There's much to like about the A99II and the A9.

But the A99II still needs better lenses, more of them.

And given that the A9 is supposed to compete with the likes of the Nikon D5 and Canon 1DS Mark II, the A9 body is too small.

A bigger body would allow for better heat dispersion, so the A9 could actually be shot at ISO 50k.

(As it is, the A9 stops being useful at about ISO 30K, mechanical shutter--raw, which is about Nikon Df territory, or Leica SL. It's big colour blotches that are the issue, not conventional noise/grain.)

It's an error on the part of Sony that the A9 can't remain mounted to a tripod head and still allow the battery to be swapped. The D5, 1DX II and the Fuji GFX-50S don't have this basic flaw.

The A9's mechanical shutter frame rate is too low for a "pro" body.

Link | Posted on May 26, 2017 at 23:43 UTC as 17th comment | 7 replies
In reply to:

HowaboutRAW: From the looks of it, that lens has a leaf shutter built into it.

Therefore this guy printed a box, which is light sealed when closed, and can hold film and mount a lens/shutter system.

It's the bellows and back of my Kodak bellows camera from the 1940s; that's the 3D "printed" part. But my Kodak collapses for transport.

And there are Polaroid bellows cameras from the 1970s that also collapse.

This substitution of "3D printed" for the verb to make is getting tiresome.

There are all sorts of things 3D printing can do that machine tools can't possibly cut--but this kind of thing is a distraction.

Link | Posted on May 26, 2017 at 23:03 UTC

From the looks of it, that lens has a leaf shutter built into it.

Therefore this guy printed a box, which is light sealed when closed, and can hold film and mount a lens/shutter system.

Link | Posted on May 26, 2017 at 22:18 UTC as 11th comment | 14 replies
In reply to:

mosc: I don't understand why you can't make a 50mm lens the size of a 135mm prime that has an aperture in this range for around $3k. I don't know who would buy it but seems like this thing's combination of size and aperture is what drives the price into lunatic land.

x

Link | Posted on May 26, 2017 at 20:54 UTC
On article Sony a9: more speed, less dynamic range (609 comments in total)
In reply to:

Bangers and Mash: More speed, less dynamic range. OK, I am no expert on all of this techno mumbo jumbo, but really. More speed at the sacrifice of DR? Like I said, I am no expert, but isn't the improvement of DR a worthy conquest in digital photography? To try and come closer to what the eye sees is, to me at least, a worth while goal, not in the other direction. Maybe I'm missing something here. Can someone clarify what they are trying to do?

xsamie:

Screen-name surlezi had brought up inaccurate higher ISO information, that's why I commented on the high ISO capacity of the A9.

Link | Posted on May 26, 2017 at 12:36 UTC
On article Sony a9: more speed, less dynamic range (609 comments in total)
In reply to:

Bangers and Mash: More speed, less dynamic range. OK, I am no expert on all of this techno mumbo jumbo, but really. More speed at the sacrifice of DR? Like I said, I am no expert, but isn't the improvement of DR a worthy conquest in digital photography? To try and come closer to what the eye sees is, to me at least, a worth while goal, not in the other direction. Maybe I'm missing something here. Can someone clarify what they are trying to do?

surlezi:

That is true, I'm only going with the hundreds of raws I've shot with the A9.

It is certainly quite possible that say the A7RII's 42MP sensor has better dynamic range.

Link | Posted on May 26, 2017 at 12:28 UTC
In reply to:

Elliot H: if this is a prototype, what will the final version cost?

About 10,500usd.

It released about 5 years ago.

Link | Posted on May 25, 2017 at 23:54 UTC

Okay, I'm more interested in the other films, and stills, of JFK being shot. The images that aren't from the Zapruder film. No one disputes that Jack Ruby sh...

Link | Posted on May 25, 2017 at 23:48 UTC as 5th comment
On article Sony a9: more speed, less dynamic range (609 comments in total)
In reply to:

Bangers and Mash: More speed, less dynamic range. OK, I am no expert on all of this techno mumbo jumbo, but really. More speed at the sacrifice of DR? Like I said, I am no expert, but isn't the improvement of DR a worthy conquest in digital photography? To try and come closer to what the eye sees is, to me at least, a worth while goal, not in the other direction. Maybe I'm missing something here. Can someone clarify what they are trying to do?

xsamie:

Above ISO 25K the A7SII starts to suffer from cyan and magenta blotching in deep shadows.

It's a weakness that the A9 avoids until about ISO 40, which is about where the Df starts to show the problem.

The D5 starts to show similar blotches in deep shadows above ISO 80k.

Link | Posted on May 25, 2017 at 23:39 UTC
In reply to:

Denton Taylor: This will work best on a Sony.

Not really, the A7 bodies, and now the A9, have vignetting problems with M lenses.

And the likes of the A6500 shoot lossy raws. That matters for the color one is able to get out of very good lens.

Fuji and Samsung APSC mirrorless bodies don't only shoot lossy raws though.

Link | Posted on May 25, 2017 at 22:45 UTC
In reply to:

kewlguy: This one should be working really well with one of those 'peeling sensors' Leica M.

Which sensors does Leica make again?

Link | Posted on May 25, 2017 at 22:44 UTC
In reply to:

mosc: I don't understand why you can't make a 50mm lens the size of a 135mm prime that has an aperture in this range for around $3k. I don't know who would buy it but seems like this thing's combination of size and aperture is what drives the price into lunatic land.

What drives this price?

Small production runs. Paying workers a living wage.

Much better optics.

Link | Posted on May 25, 2017 at 22:43 UTC
On article Sony a9: more speed, less dynamic range (609 comments in total)
In reply to:

Bangers and Mash: More speed, less dynamic range. OK, I am no expert on all of this techno mumbo jumbo, but really. More speed at the sacrifice of DR? Like I said, I am no expert, but isn't the improvement of DR a worthy conquest in digital photography? To try and come closer to what the eye sees is, to me at least, a worth while goal, not in the other direction. Maybe I'm missing something here. Can someone clarify what they are trying to do?

surlezi:

The D5 is a better higher ISO body than the A9, and the Canon is a bit better for higher ISOs than the A9.

The A9 is about the higher ISO equal of the Nikon Df.

Link | Posted on May 25, 2017 at 22:41 UTC
In reply to:

Impulses: No Type C is a pretty big turnoff, they need to get with it.

darngooddesign:

That will take some work, and significant changes to factories making the storage chips.

I believe the Lexar version projects out of the female USB port least.

Anyhow, they all project out about 7mm, and any differences in size are minor.

However the Sandisk versions run far hotter and do burn out after say a year of use.

Link | Posted on May 25, 2017 at 16:07 UTC
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