Mark Banas

Mark Banas

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

Comments

Total: 243, showing: 1 – 20
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In reply to:

maxnimo: I'm glad they didn't exceed 1080p resolution because anything over that on a 5.7-inch display would be totally ridiculous ... like adding more wheels to a 4-wheel car.

Then the Sony Xperia Z5 Premium (3840 x 2160) must be the equivalent of an Oshkosh HEMTT.
More wheels!!

Link | Posted on May 30, 2016 at 23:09 UTC
In reply to:

badi: "In images shot with a full frame body[...], the vignetting and distortion at the edge of the image circle eclipsed the value of shifting the lens (although it is unknown how much of this is due to it being an adapted lens)."

Using an adapter affects resolution, first of all (because it can appear a problem in the alignment, so the focal plane can be changed) and adds some other aberrations (like astigmatism, etc), increasing with distance from the center.
But i don't think distortion is affected by the use of an adapter (without optics), and i am pretty sure that the vignetting is not increased by the adapter (It can be, but only when the adapter is not appropriate, like having it's opening too small).

@ttbek "It's interesting to me that they insisted on covering FF use of the lens like this in the article without making it super clear (which Laowa does) that the lens is designed for APS-C only"

Huh? Under "Features" on the Laowa site, it says "Full Frame Sensor Supported."
http://www.venuslens.net/laowa-15mm-f4-wide-angle-macro/
Seems pretty clear that it's a full frame lens...

Link | Posted on May 29, 2016 at 14:22 UTC
In reply to:

Biowizard: FFS - 360 degree images is NOTHING to do with true VR, an altogether more immersive experience. All that a "360 degree" image is, is where the Photographer abandoned all and any attempt at framing and composition.

Enough already - this misinformation is damaging our art.

Brian

@Ran Plett: Sarcastic from experience. I've worked with 3D computer graphics (not just stereo photos or video) for 30 years, and 32-bit High Dynamic Range imagery (not just 8-bit tonemapped images) for 20 years, and even played with Brian's preferred version of VR in the early 90's at the UIC EVL.

This "VR" "3D" "camera" might even shoot "HDR," but none of my expertise has been diluted by popular semantics.

Link | Posted on May 26, 2016 at 01:45 UTC
In reply to:

Biowizard: FFS - 360 degree images is NOTHING to do with true VR, an altogether more immersive experience. All that a "360 degree" image is, is where the Photographer abandoned all and any attempt at framing and composition.

Enough already - this misinformation is damaging our art.

Brian

Thanks for sharing... I'm sure the manufacturers and press will stop now, just like they did with "HDR" and "3D."

Link | Posted on May 25, 2016 at 23:16 UTC
In reply to:

LukeDuciel: Tick many boxes for me but lacking a big one - optical stabilization.

I will wait for gen2 if Oly' can continue this product line.

@heypek: this camera has digital IS (oversample and crop), not optical stabilization (moving sensor or lens elements).

Link | Posted on May 25, 2016 at 15:34 UTC
In reply to:

racenviper: https://www.facebook.com/earthtoskycalculus/

These High School Students, take photos at 100,000 feet.

But those kids used a Ricoh Theta, and if you think articles about drones get slagged in the comments, just look at the recent 360 VR articles. ;)

Link | Posted on May 24, 2016 at 15:29 UTC

Meh. I don't see this VR thing getting traction any time soon...
;-)

Link | Posted on May 21, 2016 at 01:34 UTC as 6th comment | 4 replies
On article VR / Action cameras forum just launched (26 comments in total)
In reply to:

Peiasdf: OMG OMG, DPReview have a VR forum where people can meet face to face in virtual reality just like in The Matrix. Technology is amazing. What will they think of next.

Remember to unplug your skull-port from DPR when you are done visiting the VR forum. Or should I say, enjoy the VR simulation of unplugging your skull-port while we change the programming for your continued descent. ;-)

Link | Posted on May 18, 2016 at 19:35 UTC
On article Primer: What is VR, and why should photographers care? (137 comments in total)
In reply to:

Markr041: So where is the dpreview forum on VR? Where do we post and discuss 360 photos/video and cameras?

Thanks to "the magic of Barney" there is now a VR forum on dpreview! I've added a link at the bottom of the article, and you can find it here: http://www.dpreview.com/forums/1500

Link | Posted on May 18, 2016 at 16:39 UTC
On a photo in the Voigtlander 15mm Super Wide Angle Lens sample gallery (2 comments in total)

Gorgeous!

Link | Posted on May 18, 2016 at 15:30 UTC as 2nd comment
On a photo in the Voigtlander 15mm Super Wide Angle Lens sample gallery (2 comments in total)

Is the rear element coated? I'm seeing back reflections from the sensor lenses in the flare...

Link | Posted on May 18, 2016 at 15:29 UTC as 1st comment | 1 reply
On article Heavenly bodies: Nikon D810 & D810A field test (111 comments in total)
In reply to:

io_bg: I love your field test videos but this one in particular was really involving, probably your best to date. Thanks for doing it!

@WeAreShouting - Your hard work paid off. I particularly liked the soundtrack and the integration of the timelapse sequences. It all came together beautifully.

Link | Posted on May 11, 2016 at 19:07 UTC
In reply to:

jnd: For static scenes the pixel shift is great. People say also for landscapes but with that amount of detail what about moving leaves, waves and reflections in water and such? How fast does it capture during pixel shift?

ISO 6400 in pixel shift mode looks so smooth compared to standard shutter, it's like magic, great improvement.

The K-1's pixel shift can "compensate" for small amounts of motion (like leaves and water ripples), but this is done by excluding the extra pixel-shifted frames from those areas. Not sure how fast a shutter speed is required to be able to do this, though...

Link | Posted on May 9, 2016 at 12:23 UTC

You know, Time's #1 gadget of all time also has a camera built in... just sayin' (to quote Mike J.)

Link | Posted on May 6, 2016 at 22:01 UTC as 37th comment | 3 replies
On article 2016 Roundup: Compact Enthusiast Zoom Cameras (277 comments in total)
In reply to:

CopCarSS: Reading any DPR article that discusses equivalency and the shouting match that it's sure to bring about gives me the equivalent heart burn of a chili cheese dog and an order of buffalo wings.

You're making me hungry...

Link | Posted on Apr 29, 2016 at 14:00 UTC
On article Miggo wants to 'DSLR your iPhone' with the Pictar grip (137 comments in total)
In reply to:

Schroedingers_cat: I have come to believe that you could start a Kickstarter campaign for a stool sample and someone would buy it.

https://www.kickstarter.com/projects/bma/desktop-stool

Link | Posted on Apr 20, 2016 at 13:44 UTC
In reply to:

teddoman: You know Samsung NX is top of the line when it's apparently discontinued but still making headlines

Well, this is helpful for those (few?) folks like me, who bought into Samsung NX and have seen their support and repair options turn into vapor.

Link | Posted on Apr 17, 2016 at 14:22 UTC
In reply to:

RPJG: Does anyone know why 14 horizontal cameras are required, given the quite wide 19mm-equivalent field of view - e.g., for better stitching results?

Stereoscopy. That's the "3D" part of the recording. There will be one 360 image area (7 cameras) for the left eye, and another 360 for the right. Parallax between them provides visual depth.

This is why they refer to 8k *per eye* (which sounds impressive until your calculate just how many pixels will be visible at any one time).

Link | Posted on Apr 13, 2016 at 02:41 UTC
In reply to:

EdBen: Am I the only one who is hoping someone can make a "light field emission technology", to finally get true 3D films and forget about this 2D post focus limitation?

That may actually exist, but Magic Leap isn't showing it to anyone who doesn't fill their coffers with VC bucks.

Link | Posted on Apr 12, 2016 at 17:41 UTC
In reply to:

RingoMan: It would be nice to see this lens reviewed by someone that appreciates and understands the merits of a shift lens. This lens is not intended for general shooting. I would never go out and shoot general images with a shift lens or a non auto focus lens. Comments that talk about limitations that pertain to such use is, well, useless! It is like taking a convertible to carry golf clubs! The only shot here done with the shift does not straighten the verticals so do not even show that image. As a shift lens this lens is very capable. I shoot interiors of homes with a 12-24 zoom. To keep the vertical lines straight I need to keep my lens perpendicular to the walls. With no shift so often I need to crop the ceiling. With this 15, I can get perfectly corrected verticals while eliminating most of the ceiling. Outside I can get a perfectly keystone corrected exterior shot of the house without all that driveway or road in the foreground.
Manual focus is no problem on wide like this due to massive depth of field. I shoot always at f:10 as nothing moves in my shots.
The minor barrel/moustache distortion can easily be removed and then this would be a perfect lens. I cannot get any other wide shift for this price. So, reviewers, stop taking flower shots with this lens. Stop bringing a sledge hammer to put a tiny nail in the wall.

I'm glad you read the review and find the lens useful. However, let me just point out that the name of the lens (from the manufacturer) is "Laowa 15mm F4 Wide Angle MACRO." Did you catch that last word? For some folks, that means taking flower shots...

Also, I have two other shift lenses (Pentax 28mm PC and Arsat 35mm T/S), and they have gears to properly control the amount of shift. If you look in the gallery, you will see a shift shot (of an undersea mural) that shows overcorrection of keystoning because the shift amount is hard to control.

BTW, just because *you* "would never go out and shoot general images with a shift lens or a non auto focus lens" does not correlate to *no one else* should/ would. Just look at the sample images on www.venuslens.net

Link | Posted on Mar 19, 2016 at 13:31 UTC
Total: 243, showing: 1 – 20
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