John Banister

Lives in United States United States
Works as a Marine Engineer - Commercial Fishng
Joined on Nov 10, 2005


Total: 23, showing: 1 – 20
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In reply to:

Alex Rathmann: dear Hasselblad, makes the Lenses cheaper not the camera

Each X system lens has an electrically actuated shutter in it, so they cost a little more than lenses without that mechanism. If you want to use inexpensive lenses with an
X system body, you could get the XV adapter and use old system V lenses with it.

Link | Posted on Jun 20, 2019 at 01:07 UTC
In reply to:

Teila Day: Very, very good news to hear that there's activity in this area (larger sensors); ideally with continued research in this area, we'll see something along the lines of a 300mp 6x7 or 6x9 camera. I hope this type of exploration continues and would like to see more people get into bringing much larger sensors into fruition.

I hope it works out that way.

Link | Posted on Apr 21, 2018 at 05:54 UTC
In reply to:

qzm: Hmmm...
Without digging (not enough time today, sigh).
300mm wafers are FAB industry standard. 450mm are used for high quantity production (Intel, Samsunm TSMC).
To fab a single 8x11 inch sensor takes a 360+mm wafer, so somewhere in between.
So it really is a wafer scale sensor, assuming it is not using some optics inside to play some trickery..
But the costs? would be astronomical. 450mm wafers only exist on EXPENSIVE lines, and the next size down is 300, which wont fit.
The cost per RAW wafer is likely to be in the $5k+ region, however other costs (masks, bad chips, packaging, bonding, and simply fab line start/stop) would be much much more than that.
Without really running the numbers, I would be surprised if they could make these sensors in quantities much under 1k for a cost under $50k per.. and that is assuming 'help'.
But.. but.. WHY would you not make it higher resolution, after going to all the trouble?

A very very strange product indeed.

With 75 micron pixels now, followed on by 50 micron pixels later, this isn't wafer type production. This is someone printing electronics onto glass, getting their print resolution finer as they develop their technique. I'll be very interested if they can get the resolution of their printing down to 15 micron pixels, as I was once told that's the resolution corresponding to the old film lenses for medium format.

Link | Posted on Apr 20, 2018 at 14:31 UTC
In reply to:

Teila Day: Very, very good news to hear that there's activity in this area (larger sensors); ideally with continued research in this area, we'll see something along the lines of a 300mp 6x7 or 6x9 camera. I hope this type of exploration continues and would like to see more people get into bringing much larger sensors into fruition.

No. This is going the other way. 75 micron pixels for 8x10 followed on by 50 micron pixels for 4x5 suggests far larger pixels than would allow for 300mp in 6x7. I would hope for 15 micron pixels on medium format sensors (in 6x7, yielding 4000x4667 =~18.6 mp), but I'm probably being too optimistic about how much they can scale down their pixels.

Link | Posted on Apr 20, 2018 at 14:21 UTC
In reply to:

DotCom Editor: So, they make two or three of these every week?

It would certainly be interesting to see lens grinding, coating, assembly and testing, especially having seen the cameras assembled.

Link | Posted on Jan 4, 2018 at 10:53 UTC
On article Nikon D850 vs Sony a7R III: Which is best? (1105 comments in total)
In reply to:

anwiko: Where will we go from here?
Image quality today is fantastic. Cameras are fast and reliable, the remaining problems are limited. High-res is a challenge for focussing and lenses. I wonder which kind of innovation we will see in the future. I see two trends: The optimization of high end cameras like the A7r3 and the D850, and the mainly software-based innovation we see in the phone market. It would be interesting to see what happens if a classical camera company and a tech-firm with an army of software engineers would re-think professional photography.

Where from here? Robotic telepresence photography. There's a reason this site reviews drones. A few nights ago I dreamed of flying spider robots. Now I imagine one holding a camera in a location that would be completely inaccessible to my body.

Link | Posted on Dec 9, 2017 at 19:51 UTC
In reply to:

RolliPoli: OK, who's next with a reissued TLR Rollei or Yashica???
I'm waiting! :)

dhw-fototechnik still sells Rollei TLRs and the Rollei Hy6-II. If you're looking for a currently produced TLR that's less expensive, there's also the Seagull 4A-109, 4B, and 4B-1. The Kiev Arsenal factory doesn't currently produce a TLR, but the Arax 60, Arax 645 and Arax CM are available. And, Alpa produces those nice mirrorless cameras that can convert between film and digital. Similarly, the Horseman SW612D is available.

Link | Posted on Nov 13, 2017 at 11:52 UTC
On article RIP Lightroom 6: Death by subscription model (1611 comments in total)

For people who like photo editing software without the cloud, the last version of Picture Window Pro is available for free.

Link | Posted on Oct 23, 2017 at 10:27 UTC as 55th comment | 1 reply
On article Here's why your beloved film SLR is never going digital (298 comments in total)

When you include "here's why" in the article title, and then provide a bulleted list of unexplained assertions, it makes me feel shortchanged for having decided to read the article.

Rather than making film modules for people's favorite old cameras, people who do these projects might consider trying to make a 35mm version of the Alpa 12, with a focal plane shutter module, a removable digital back, and precision lens adapters for your favorite old camera's lenses. You could use it as a mirrorless digital camera and swap the lens back to your favorite old SLR faster than you could swap in digital film on that same camera. Or, you could use it as a digital Polaroid with your favorite old lens and then swap in a film module and use something like the Alpa viewfinder to point the film at that same scene.

If one really wanted to try bringing digital to an old film camera, an ideal camera for that might be the Rolleiflex 3003 where interchangeable backs were part of the original design.

Link | Posted on Oct 13, 2017 at 09:55 UTC as 16th comment
In reply to:

Michael Ma: Because of dxomark, all the cameras and lenses will eventually look the same, as if they were shot from a smartphone. We'll lose proprietary color science, lens rendering characteristics, light diffusion characteristics, all for the sake of achieving boring clinical sharpness.

Do a search on sensor size physics. Medium format won't look like "shot on a smartphone" regardless of boring mtf graphs.

Link | Posted on Oct 13, 2017 at 08:56 UTC
In reply to:

MPS Photographic: A bit OT, but the article mentions "mirrorless medium format" cameras. Isn't that like driving a Mercedes S-class with a flat-screen TV replacing the windshield?

It's what you see versus what you capture. Large & medium format photographers in years past often took Polaroids of their shot to learn more about the latter. The screen on a mirrorless camera shows information from the sensor and so can show you what you will capture. It may not, however provide you the same feeling of pleasure as looking at light from the scene via mirror and focusing screen.

Link | Posted on Oct 13, 2017 at 08:44 UTC
In reply to:

JoFa: Sure. As already analysed here on DPR the key challenge for them is the mount type. Do they keep the old DSLR mount + lenses and miss opportunities for really new designs or do they start with a new mount type causing a massive investment in lenses + body system allowing to overcome historic limitations?
Let's see but nothing comes for free.

They kept the mount for DX cameras, which is in some ways a bigger problem. For FX lenses on mirrorless, they just need to make a custom extension tube, and they already have lots of experience with AF extension tubes. A key challenge for them will be IBIS. Customers will want it. This is especially the case considering that the performance advantage of Nikon sensors goes away as one moves further from base ISO. But, to get the feature, Nikon will have to pay license fees for the technology to companies with that "limited view."

Link | Posted on Sep 19, 2017 at 11:01 UTC

Regardless of the "it thinks for you" features, being able to ditch all the camera menu systems and control the cameras from a single consistent, familiar piece of software sounds nice, as does having macros for quickly doing everything to implement tasks you want the camera to perform again later.

Seems a shame it takes extra hardware to make this happen. By now, we ought to be able to pair the camera with the phone and operate software that uses a manufacturer supplied SDK for remote control of settings and operation.

Link | Posted on May 26, 2017 at 19:21 UTC as 57th comment
In reply to:

KingstonGuy: At 1:43... "Visually Complex; Opening Aperture." Am I missing something here? I'm no expert but wouldn't more, not less, depth of field be more of a go-to setting in this case?

Kinda depends on whether you're trying to document the scene, or aim for an aesthetic that's improved by isolating the subject.

Link | Posted on May 26, 2017 at 18:59 UTC

I wonder, will the extra ISO will keep the image quality nice while using a 1 stop filter for improving single shot dynamic range? It might be worth a check.

I see lots of complaints about the sensor size, but it seems to me that if they make the sensor larger and the glass enough larger to keep it fast, and they still want to keep the zoom and focus movement internal, then they would have to change the form factor and make something that competes with rugged video cameras like the Quad Proof Everio. Maybe that market is in their future, but it's not the one in which the TG-5 competes. On the other hand, a rugged little video camera with a really tough display hinge and a signature new feature, (like maybe 4K video in CinemaDNG) would certainly attract plenty of interest, and it might be attractive enough to overcome the sticker shock that's bound to accompany a non reputation ruining entry into the new market.

Link | Posted on May 17, 2017 at 18:51 UTC as 39th comment | 1 reply
In reply to:

Joed700: I keep on hearing from other sources that the Fuji GFX 50S isn't a true MF camera compared to say Hassleblad or alike. Can someone clarify this for me?

For film, "medium format" means one of the dimensions of the image is 56mm. The dimension to the edge of the film is 6 cm. Often, the sizes are referred to by their approximate centimeter dimensions, so 645 refers to 6 cm x 4.5 cm, 66 or 6x6 refers to 6 cm x 6 cm, 67 or 6x7 refers to 6 cm x 7 cm, and the Fuji Gx680 uses 6 cm x 8 cm of film for each image. Fairchild Semiconductor has made 6 cm x 6 cm and larger sensors, I think for use in satellites operated by the defense department and the CIA. The Leaf Afi 10 has a sensor that reaches almost to 56mm in its long dimension, and other "medium format digital" sensors have a larger diagonal measure than that one. Really, you have to look down into the 5 sq inches of view screen on a 6x6 camera and consider how it sees the world. "Full frame" does not replicate this experience.

Link | Posted on Mar 24, 2017 at 06:48 UTC
On article DJI reportedly takes majority stake in Hasselblad (190 comments in total)
In reply to:

Gesture: Weird. Too many orders! But who would really want to own Hasselblad?

The Hong Kong based Shriro Group (2003-2011) ? Ventizz Capital Partners AG (2011-2016) ?

Link | Posted on Jan 8, 2017 at 17:33 UTC
On article GearEye is an RFID-based gear management system (47 comments in total)
In reply to:

Stefan Hundhammer: In a previous job just 2-3 years ago I developed some RFID-based software, so I know a bit about the technical background. What they announce here is just a lot of wishful thinking; the type of RFIDs supported by modern smartphones is based on ISO-14443, using 13.56 MHz. While it is possible to detect multiple RFID tags with that technology, that works only in theory and only with very short distances - we are talking about only a few centimeters here, which limits the usefulness of this idea. And this is without any disturbances caused by metallic parts like lenses.

There is just no way to scan the content of the entire photo bag in one go; you'd have to unpack every single item to inventory the bag, and this would completely defeate the purpose of this idea.

And where an RFID tag would possibly go on thin items like, say, a polarizer beats me; ditto with batteries which typically don't have enough free space around their sides while still fitting into the camera.

When I did a little research, it looked like industrial normal mode helical antennas for RFID reading in the 860-960 MHz band are designed for distances of ~10 meters. As described, the distance for this use-case seems to be about 1 meter.

Link | Posted on Jan 2, 2017 at 22:24 UTC
On article Medium-format mirrorless: Hasselblad unveils X1D (1173 comments in total)

When I compare the thickness of this to digital backs, I really have to applaud the use of space. Considering the cost of the camera, and what percentage of that cost is in the sensor, I think I'd make all the internals of the front part of the hand grip to contain only a battery and connection wires for the shutter release and front dial. Then I'd make an option for the front part of the grip to be removable and attached like a wired remote release, so that there's nothing in front of the lens attachment plane to impede the use of the sensor with large format equipment.

Link | Posted on Jun 22, 2016 at 18:35 UTC as 119th comment | 1 reply

This is my photo. There are many like it, but this one is mine. My photo is my best friend. It is my life. I must master it as I must master my life. ...

Link | Posted on Sep 12, 2015 at 05:22 UTC as 62nd comment
Total: 23, showing: 1 – 20
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