Mark Banas

Mark Banas

DPReview Contributor
Lives in United States Potomac, MD, United States
Works as a Designer/ Panographer/ Writer
Has a website at http://markbanas.com/
Joined on Jan 26, 2005

Comments

Total: 265, showing: 1 – 20
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In reply to:

CameraLabTester: A great camera to own.

So sad that there are so many "exclusive" proprietary 360 VR engines out there... there should be a universal standard to load and view typically any 360 VR file... just like the common JPG can be read by any mainstream software...

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@CMaxLaw - I haven't looked into it, but if there's no way to download fully stitched, blended imagery as a common image file (jpeg, tiff) from their stitching servers, then the Panono camera is dead in the water. If they have this already, or are planning to add it soon (sans watermarks, of course), then they'd better announce it soon or this will end up like the Lytro cams.

Of course, the Lytro camera needed you to show the images on their servers to support unique functions (refocus, perspective adjust), but that was still a major factor in the demise of their consumer lightfield cameras.

Link | Posted on Jul 24, 2016 at 16:51 UTC
In reply to:

Roman Korcek: If the cameras are fixed and thus their coverage of the scene and mutual overlap is exactly known, why does a complicated stitching algorithm need to be there? One simple stitching method should be sufficient for any possible image, no? Someone enlighten me please.

Manufacturing tolerances. There is no "exactly known" feature overlap when dealing with so many (hand positioned?) high-res sensor and lens units, coupled with distortion and possible feature motion from sync errors as well. Naturally the software analyzes the resultant image features in the expected overlap regions, making slight corrections and blending them as seamlessly as possible. Considering how much easier (computationally) this post-processing has gotten, it's a no-brainer, even with the strictest tolerances.

Link | Posted on Jul 24, 2016 at 16:08 UTC
In reply to:

CameraLabTester: A great camera to own.

So sad that there are so many "exclusive" proprietary 360 VR engines out there... there should be a universal standard to load and view typically any 360 VR file... just like the common JPG can be read by any mainstream software...

.

You mean the methods to display them interactively on the web?
The previous article on VR in iceland ( https://www.dpreview.com/opinion/2358305211/travel-photography-stills-versus-vr-in-iceland ) used Google VR View, which is freely available and pretty universal. This article is using Panono's version of the KRPano viewer, which may be proprietary, but is the most popular. Neither should require any plugin or special hoops to jump through for the consumer, just a modern browser/ device.

Also, forgot to add: when it comes to stitching/ creating the 360 files (if that's what you meant), Google has also opened up its Streetview "Photo Sphere" XMP, so cameras like the Ricoh Theta write this data into their output. In theory, this should allow for a universal stitcher as well, but since most of these cameras communicate with the camera via smartphone apps, the output is typically equirectangular jpegs anyhow.

Link | Posted on Jul 24, 2016 at 13:43 UTC
In reply to:

Joe Ogiba: Lexar makes the fastest microSDXC cards today with maximum data read speed of up to 270 MB/s and write speed of up to 100 MB/s .

http://static.bhphoto.com/images/multiple_images/images2000x2000/1451498432000_IMG_569473.jpg

http://www.bhphotovideo.com/c/product/1211502-REG/lexar_lsdmi128crbna1800r_128gb_professional_uhs_ii_microsdxc.html

Lexar UHS-II SDXC cards are much faster with Max. Read Speed: 300 MB/s and Max. Write Speed: 260 MB/s.
http://static.bhphoto.com/images/multiple_images/images2000x2000/1457630102000_IMG_600012.jpg

http://www.bhphotovideo.com/c/product/1191363-REG/lexar_lsd128crbna2000r_pro_2000x_uhs_2.html

Huh. Hey Joe, that Sandisk you linked to is *faster* by 5 MB/s than the Lexar you said was "the fastest microSDXC cards today." I suspect they are both pushing the limits of current technology, so who knows which is faster in use.

Link | Posted on Jul 2, 2016 at 19:32 UTC
In reply to:

vscd: It's always awkward to see "up to 100 MB/s" and the small "C10" which guaranties 10MB/s, only. Why not C30? Can't the SDCard assure at least 30% of the nominal speed? Hmm.

Okay, my bad. The photo *is* correct, but the WD/Sandisk marketing people confused their own headline, since the claim is not that it's the "fastest microSD card" but rather the "fastest 256GB microSD card." Their red/black Extreme Pro UHS-II cards are definitely faster, but only to 128GB capacities.

Kind of misleading, until you see "fastest microSD card in its class" in the press release.

Link | Posted on Jul 1, 2016 at 02:05 UTC
In reply to:

DotCom Editor: Infrared signals are line of sight. To avoid that, just carry a small mirror and point the phone's camera at the mirror instead of at the stage.

You do realize that the infrared sensor would be *in* the camera, right?
The mirror would reflect that wavelength as well...

Link | Posted on Jun 30, 2016 at 23:57 UTC
In reply to:

vscd: It's always awkward to see "up to 100 MB/s" and the small "C10" which guaranties 10MB/s, only. Why not C30? Can't the SDCard assure at least 30% of the nominal speed? Hmm.

Yes, the card in the photo is incorrect. The new models are all black, with red lettering, seen here: https://www.sandisk.com/home/memory-cards/microsd-cards/extremepro-microsd-uhs-ii

Also, SDXC cards support multiple transfer protocols. If your camera supports UHS, then you get U3's 30MB/s *minimum write* speed, but if not, then you get C10's 10MB/s minimum write speed. The minimum speed insures that data isn't backlogged in the buffer. Contrast also with CF cards that only print the *maximum read* speeds on the front.

Link | Posted on Jun 30, 2016 at 20:33 UTC
On article Beyond the table top: 5 mini tripods reviewed (197 comments in total)
In reply to:

AriFLM: I just wanted to let everyone know that FLM has updated our CP10-A1. The legs are now made of carbon fibre and a tool kit is now included with the tripod.
It has been re-named CP-Tabletop and the new version is coming out this August.
The best part is that the price should actually drop a little.
Thank you!
Ari

Great to know! Do the new legs change the specs at all? (Max load, total weight, etc.)

Link | Posted on Jun 28, 2016 at 13:05 UTC

Awesome! Just the post-processing instructions are invaluable for an astro-dummy like myself...

Link | Posted on Jun 23, 2016 at 15:49 UTC as 22nd comment
In reply to:

lambert4: Is this saying that content is only controllable via Samsung mobile devices or only viewable and controllable?

The software that runs the camera remotely is only available for (a few) Samsung mobile devices. The camera itself has removable storage and big buttons, so a Samsung device isn't completely required.

Link | Posted on Jun 23, 2016 at 14:42 UTC
In reply to:

Ross the Fidller: Is Bowens subject to that useless US company that tried to (or did) take out a patent on LED photographic panels?

You mean Litepanels, a division of Vitec (who also own Manfrotto, Gitzo, Lastolite, Sachtler, etc.)?
Bowens is probably paying them a licensing fee for their "patents."

Link | Posted on Jun 21, 2016 at 03:19 UTC
In reply to:

DukeCC: What--no IS????? SMH

That's the problem with old lenses... no AF, no aperture coupling, no "neutrino coatings," no IS... just glass.
Pffft, indeed.

Link | Posted on Jun 16, 2016 at 19:02 UTC

I wonder how this differs from Cameralends.com

Link | Posted on Jun 14, 2016 at 19:33 UTC as 12th comment | 4 replies
In reply to:

Interestingness: Now THAT is cool! Didn't know you could zoom in and out until accidently scrolling my mouse wheel. And is that a resolution target and colour/white balance area above the top wheel, under the grey cylinder thingy?

Would be an amazing educational tool to make this a 'game' where you can drive the rover around at a decent speed and learn about the planet.

EDIT: On a second look at the Rover it seems like resolution type targets all over the place.

"Would be an amazing educational tool to make this a 'game' where you can drive the rover around at a decent speed and learn about the planet."

NASA and the JPL are already doing this with OnSight and Microsoft Hololens. http://www.jpl.nasa.gov/news/news.php?feature=6220
They also use the data and VR headsets for scientists to examine locations long after the rover has left that area.

Link | Posted on Jun 12, 2016 at 02:02 UTC
In reply to:

alcaher: Looks like if it was shoot in the Namib desert
Fake as NASA's fake landing on the moon

Jeez, don't you know it's all CGI these days? ;)
Welcome to the matrix.

Link | Posted on Jun 11, 2016 at 17:02 UTC
On article Lenovo Phab2 Pro is the first Project Tango phone (29 comments in total)
In reply to:

XEddieX: Decent size battery.

Decent price, too.

Link | Posted on Jun 10, 2016 at 17:22 UTC
In reply to:

Edgar_in_Indy: I hope they continue their tradition of offering their lower-end APS-C in different colors. My white K-30 is due for an upgrade!

It's insecurity, Edgar. Always insecurity...
(About a camera brand!)

Link | Posted on Jun 9, 2016 at 11:55 UTC
In reply to:

D135ima: The most important question - is the quality of image at the long end. As well as the stability and reliability from instance to instance. In cheap telephoto lenses these are the most weak points. If all is well on these questions - everything else can be forgiven, including f/6.3 and 400$

Well, if it's anything like the old 55-300, then it has it where it counts... at the long end. Mine was surprisingly sharp at 300mm/F8, but naturally needed lots of light.
http://www.pentaxforums.com/lensreviews/SMC-Pentax-DA-55-300mm-F4-5.8-Zoom-Lens.html

Hopefully the RE (retractable) engineering didn't muck this plastic-fantastic up, like it did with the 18-50 RE (compared to the fairly decent 18-55).

Link | Posted on Jun 9, 2016 at 00:08 UTC
In reply to:

Mark Banas: The only thing missing is an "exit through the gift shop."

That explains the record-setting attendance...

Link | Posted on Jun 7, 2016 at 22:17 UTC
In reply to:

Mark Banas: The only thing missing is an "exit through the gift shop."

I'm still sulking in the virtual corner after losing to Allison.
I'm hogging the guacamole, too.

Link | Posted on Jun 7, 2016 at 22:01 UTC
Total: 265, showing: 1 – 20
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