Joseph S Wisniewski

Lives in United States Detroit, MI, United States
Works as a Speech and sensor scientist
Has a website at http://www.swissarmyfork.com
Joined on Jul 12, 2002
About me:

I've been in love with photography for over 40 years.

My favorite form of photography is macro, and much of my gear is of my own design.

I've done professional photography on and off for over 20 years.
Taught 8 years at Midwest Photography Workshops.
Designed 3 scientific digital cameras and 6 lenses.

Author of mImage and (coming soon to the App Store and Google Play) ColorForEveryone.

Comments

Total: 666, showing: 341 – 360
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In reply to:

Chekr: I would actually give this a try if the images format was an open standard...at this stage you can either view the images in the desktop program from Lytro or export them as flash files. Given that flash is well and truly on the decline and Lytro could disappear next year, remind me why I would commit my memories to this technology with proprietary image formats...

What would you do with the image data if it were an one standard? The system is effectively dead, no one else is ever going to write software to deal with the files.

You'd need them not only to open the standard, but to open the source to the software.

Link | Posted on Oct 13, 2012 at 01:56 UTC
In reply to:

CameraLabTester: The greatest challenge for the Lytro LF Camera is to find a really truly genuine USE for it.

The Wankel was great. The Segway was great.

The Lytro LF is great!

...great gadget, users please apply within.

.

That is not fair. There are some practical uses for the segway, and Wankel engines do have pretty good performance.

Link | Posted on Oct 9, 2012 at 23:10 UTC
In reply to:

facedodge: Heard they have the fastest Autofocus around.

;)

No. Their autofocus is slow, and inaccurate. It shouldn't be: the plenoptic system essentially makes the entire sensor a giant phase-detection autofocus sensor.

I think you're trying to be sarcastic, and make a statement about the lytro not actually needing to focus, which is not true. It only increases DOF about 3-4 stops worth vs wide open, and their lens is fast enough and long enough that wide open, the DOF is pretty shallow. It needs good AF to put the subject within that shallow DOF so you can do at least some "refocusing".

Link | Posted on Oct 9, 2012 at 23:06 UTC
In reply to:

Tom view to a still: Light Field technology??? What isn't light field technology when it comes to photography?

I have heard the hoopla about this for a long time now. They don't explain anything really... bunch of techie double talk that really says nothing. I think the emperor has no clothes.

My guess at the big secret... focus bracketting. Several images taken simultaneously or near simultaneously. Software that uses the images to "slide the focus" (or de-focus) arcoss the multiple images. Give it a cool tech sounding name. You've got a new pet rock.

So far sounds like another red herring, time wasting gizmo. But.. love to see a true critical review. My mind is still open to facts, just not slogans.

If you had checked, like you accuse Tom of not doing, you'd have realized that the amount you can actually shift a POV with a lytro is about 10mm, making that feature useless at anything other than macro distances.

Past that, and you run into exactly the same occlusion problem you have converting a focus stack to 3D: an image that looks extruded rather than actually dimensional.

Focus stacking and lightfield imaging both produce volumetric data. The processing algorithms are similar.

Link | Posted on Oct 9, 2012 at 23:00 UTC
In reply to:

Zvonimir Tosic: I see from the comments below that our usual flock of vultures have gathered again on the tree branch of DPR news to release their croak about things they've never tried, and matters they never bothered to understand.

Yes, that is what you do. But why are you bragging about being a vulture?

Link | Posted on Oct 9, 2012 at 22:55 UTC
On article Coming soon: Lens Reviews to return to dpreview.com (272 comments in total)
In reply to:

readingaloud: One additional test that would be of immense interest to an (admittedly small, but growing) number of protographers would be to test lenses for infrared usability. It wouldn't have to be anything elaborate, but there are a bunch of us who would reallly like to know whether a lens has an IR hotspot before we spend good money for it, and currently there's no way to tell about a new lens until other IR folks start complaining about it.

There's two problems.

First is the "Sony lesson". High profile entities come under a lot of fire for offering any sort of support for infrared. It's one thing for some guys in a basement like Lifepixel or Max Max to do it, but dpreview would have the same problems that Sony had, religious groups and rabid mothers screaming about perverts taking "x-ray pictures" of their precious children.

Second is that IR hotspots are highly dependent on the wavelength of IR used, and the characteristics of a particular sensor, and that of the filter used for the IR mod. So there's no one test. That's also why you see so many "independent" tests disagreeing about particular lenses.

Link | Posted on Oct 3, 2012 at 13:33 UTC
On article Coming soon: Lens Reviews to return to dpreview.com (272 comments in total)
In reply to:

David Rosser: I really think that the only satisfactory way of testing lenses is independent of camera using equipment such as this
http://lenses.zeiss.com/camera-lenses/carl-zeiss-camera-lenses/industrial_lenses/products/lens-measuring-technologies.html#inpagetabs_41a6-0
I am sure that with the backing of Amazon DPReview could afford to purchase such equipment. The Zeiss lens testing equipment also has one important attribute that your methodology does not - it test the lens at infinity focus, your tests cover near focus only.

You do realize that you're advocating equipment that hasn't been updated in 15 years, can't measure past 6 microns (a 24mp APS camera is 4 microns) and, if memory serves, can't accommodate the short backfocus of EVIL lenses.

Link | Posted on Oct 3, 2012 at 13:27 UTC
On article Coming soon: Lens Reviews to return to dpreview.com (272 comments in total)

I've missed Len. He was my favorite of all the reviewers at dpReview, although Simon and Andy are pretty cool, too.

Link | Posted on Oct 2, 2012 at 17:50 UTC as 98th comment | 1 reply
On article Hasselblad responds to Lunar criticisms (613 comments in total)
In reply to:

CFynn: It seems Hasselblad must have got rid of their engineers and camera makers and just replaced them with some jewellers to make fancy skins for Sony cameras.

Indeed. They got rid of most of them in 1996, three takeovers ago. The new owners, UBS and CINVEN didn't take long to notice that there wasn't a single person among their existing staff who could design anything even remotely relevant to the day.

The thing was, those owners at least had (or brought in) some product planners capable of coming up with a tolerable survival plan, the rebranding of desirable Fuji products like TX and GX as xpan and the H system.

There's nothing wrong with that, Blad's roots are as a distribution company, actually making things isn't really their strength, and they never did as well at it as they did selling other people's stuff (truth often sounds like blasphemy, LOL)

Next owner, Shriro, also appeared to have some concept of helping Blad thrive, with the Imacon "merger".

It's just this latest owner, Ventiz, who started talking loud about leveraging the brand. We all knew something stupid was coming, we just didn't know it would be this epic.

Link | Posted on Sep 30, 2012 at 15:00 UTC
On article Hasselblad responds to Lunar criticisms (613 comments in total)
In reply to:

Joseph S Wisniewski: I knew the name Luca Alessandrini sounded familiar.

Isn't he the guy who "brand managed" Gitzo into their current straits? Remember the "basalt" (or "dirty fibeglass") tripod?

http://forums.dpreview.com/forums/read.asp?forum=1000&message=10795245

I think that was one of his. How about the "Titanium Traveler", a $2500 limited edition?

If memory serves, he was also the mastermind behind Gitzo's plan to curtail all European manufacturing and outsource the entire product line to China (the move that accidentally created their competitor, Benro, AKA Induro).

Best numbers I have, about 2000.

The Luca should skyrocket that to at least 2003, maybe even 2005.

Link | Posted on Sep 29, 2012 at 18:29 UTC
On article Hasselblad responds to Lunar criticisms (613 comments in total)
In reply to:

CameraLabTester: Hasselblad, truly, had a lot of respect, then.

Sony too.

This endeavor at Photokina 2012 saw them wipe it all out, by their own making.

.

They missed a compact system camera in the Luca's price range, LOL. The Leica M has a sensor with over twice the area of the "Blad" APS sensor.

Link | Posted on Sep 29, 2012 at 18:27 UTC
On article Hasselblad responds to Lunar criticisms (613 comments in total)
In reply to:

Carl Sanders: Just realised why it is called the Lunar, one would have to be a Lunatic to buy one! What an unfortunate mistake!

I think Luca named it after himself. Heck with Blad's history in the space program, an egomaniac got an opportunity to stamp his name on something, and he jumped at it.

Link | Posted on Sep 29, 2012 at 18:21 UTC
In reply to:

Lee Jay: The other thing you need - desperately in my view - is a bandwidth reduced version. Call it a mobile version if you like. The goal there should be to keep page loads under 100KB, and preferably smaller than that. Current page loads are in the 700KB range, and that's just a pain on a mobile device.

Yeah, with a posting limit of 6k in that 700k. That's less than 1% content, more than 99% wrapper.

Link | Posted on Sep 28, 2012 at 15:24 UTC

That's paint. What are you doing to address the structure itself?

I don't recall a single post saying "space things out more", but there have been thousands (not exaggerating) about moderation.

The only paint topic that comes up repeatedly is the black background.

Link | Posted on Sep 28, 2012 at 11:16 UTC as 205th comment | 2 replies
In reply to:

Najinsky: I browse more and more on the iPad, and visit sites that are not iPad friendly less and less. At the moment, using DPR on the iPad is a half experience. I can't load photos to my galleries, and more importantly I can't use various widgets, like the test scene comparison.

The iPad is not like a mobile phone, the new one has a higher quality and higher resolution screen than most laptops and a fair number of desktops. It's a great device for enjoying photography and I'd really like if you supported it better.

That's the first thing that struck me about the new layout, how unfriendly it is for tablets, with more empty space and a ton of scrolling needed.

Link | Posted on Sep 28, 2012 at 11:10 UTC
In reply to:

AbrasiveReducer: I imagine the prospect of hospitals and labs filled with Sony microscopes is pretty appealing.

LOL yourself, Vibrio. You have no idea what the percentage shares are in the microscope industry, do you? Zeiss is the number 4 scope maker, behind Nikon, Oly, and Jeol. Leica is way down around number 8.

Getting their hands on the number 2 maker, and gunning after number 1, that's a Sony kind of thing.

Link | Posted on Sep 27, 2012 at 13:34 UTC
On article Hasselblad responds to Lunar criticisms (613 comments in total)

I knew the name Luca Alessandrini sounded familiar.

Isn't he the guy who "brand managed" Gitzo into their current straits? Remember the "basalt" (or "dirty fibeglass") tripod?

http://forums.dpreview.com/forums/read.asp?forum=1000&message=10795245

I think that was one of his. How about the "Titanium Traveler", a $2500 limited edition?

If memory serves, he was also the mastermind behind Gitzo's plan to curtail all European manufacturing and outsource the entire product line to China (the move that accidentally created their competitor, Benro, AKA Induro).

Link | Posted on Sep 24, 2012 at 18:09 UTC as 52nd comment | 2 replies
On article Hasselblad responds to Lunar criticisms (613 comments in total)
In reply to:

CameraLabTester: Any graphic designer, industrial engineer, concept artist, creative director, etc would know that these designs were conjured up in frantic haste, perhaps just a few hours before the opening of Photokina 2012.

They are NOT well planned and thought out designs. They are empty hurriedly assembled sugar coatings to put a table cloth over an already existing NEX design.

It is so obvious,even to the layman,that these are not really R&D material. The ergonomics are utterly wrong.

THIS is why there are so many angry comments.

It is a shocking insult to one's intelligence.

Come back again in Photokina 2015...

...after you have done your homework.

.

Agree with everything you said, except one minor detail.

There is no photokina 2015. It's biannual. 2014 then 2016. I don't give Blad to 2014. Liquidation, and their assets bought by P1 within 18 months...

Link | Posted on Sep 22, 2012 at 23:07 UTC
On article Hasselblad responds to Lunar criticisms (613 comments in total)
In reply to:

garyknrd: Personally I like the idea. A great name that is recognized world wide.
For me personally before I would buy it. I will wait for the accessories to get up to speed. Earrings, necklace's, nose rings, then a serious contender. Maybe Sack's Fifth avenue, will pick up the line.
+1 here, congratulations on the new spring line.

And I will be the guy who politely asks you to explain exactly what extra technology Hasselblad actually contributed, because it looks like a stock Sony "masterpiece" with Blad "panels" and knobs.

Blad took the Mona Lisa, drew on bushy eyebrows and a mustach in black Sharpie, and asked 3x the price.

Oh, and the kind of designer who can do something like Lunar believes themselves to be totally beyond the criticisms of the ungifted, so there is no danger of suicide.

Link | Posted on Sep 22, 2012 at 23:02 UTC
On article Hasselblad responds to Lunar criticisms (613 comments in total)
In reply to:

Yves P.: I hate to say this but this looks like a defensive response ... If you believe in what you create, you shouldn't have to explain it period ...

Of course. LU cas named the LU nar after himself. Anyone capable of that sort of hubris is going to get defensive on a scale you simply can't imagine.

Link | Posted on Sep 22, 2012 at 22:56 UTC
Total: 666, showing: 341 – 360
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