ProfHankD

ProfHankD

Lives in United States Lexington, United States
Works as a Professor
Has a website at http://aggregate.org/hankd/
Joined on Mar 27, 2008
About me:

Plan: to change the way people think about and use cameras by taking advantage of cameras as computing systems; engineering camera systems to provide new abilities and improved quality.

Comments

Total: 980, showing: 41 – 60
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In reply to:

steven gaspari: I hope to actually meet someone who owns a Sony camera someday.

Hi.

Link | Posted on May 3, 2016 at 00:22 UTC
On article Friendly Rebel: Canon EOS Rebel T6 / 1300D samples (177 comments in total)

You know, an entry-level camera now is better than many higher-end cameras from 5 years ago... but this really isn't awesome. From image #14, it looks like ISO6400 is pushing things too far. Then again, if a Canon DSLR is really what you want, here's a cheap one... and I bet I'll see it in bundles at Sam's Club.

Link | Posted on May 2, 2016 at 19:22 UTC as 42nd comment | 4 replies
In reply to:

Sean65: Don't get these articles. What are they? Some kind of camera geek porn?

Reposts of summaries of iFixit stuff, which is largely repair guides mixed with teardowns. Cool if you didn't know about iFixit, redundant if you did... and I did. :-)

Link | Posted on Apr 30, 2016 at 19:36 UTC
In reply to:

ThePhilips: I use Google Image search regularly, and I yet to encounter the stock photos of high resolution. Largest dimension rarely exceeds 400 pixels.

Also I have never seen Getty images in the search results.

I think this is really just another round of the old content caching battle. Google massively caches local copies of content primarily for access speed reasons. However, it was not clear if caching is fair use and it is clear that it reduces traffic to the original site. In the US, this issue long ago got settled such that content caching is (mostly) allowed; I suspect that's why the EU venue...?

Link | Posted on Apr 29, 2016 at 22:38 UTC
In reply to:

fotogrofur: No surprises.

Not so sure about that, Revenant. I'm just one person, but I normally have more than a dozen cameras running on my behalf. Better to think of them as "smart sensors" for monitoring things than cameras. In any case, most human-controlled cameras only had roughly one per human. :-)

Link | Posted on Apr 27, 2016 at 17:05 UTC
In reply to:

fotogrofur: No surprises.

No, I think "stand alone" -- as in no need for a human operator -- is the future of compacts. That's what all those action cameras are baby steps toward, as are all those network cameras. Such semi-autonomous sensing devices are one of the few Internet-of-Things (IoT) paths that I'm pretty sure about... I'm much less convinced the world needs a toaster that can't operate without an Internet connection. ;-)

PS: Most of my PowerShots normally run without a human operator.

Link | Posted on Apr 27, 2016 at 12:18 UTC
In reply to:

fotogrofur: No surprises.

Not much future either.

BTW, I use fleets of PowerShots to run CHDK. Some minor camera-internal changes meant that CHDK ports to new PowerShots stopped happening for a year, so no fleet purchases in that window. The only thing that would save the compacts is Canon actually helping to support things like CHDK, so that the compacts become programmable image capture devices... kind of an IoT future. Pitty Canon doesn't seem to get that.

Link | Posted on Apr 27, 2016 at 01:46 UTC
On article Readers' Showcase: Giulio Magnifico (78 comments in total)

Excellent proof that 35mm is a great focal length for portraits. Beautiful work.

Link | Posted on Apr 24, 2016 at 18:01 UTC as 31st comment
In reply to:

eazizisaid: Guys, what's the deal with the G-Master name ? I live in Morocco and never been in the states before so i don't know why it is this badly regarded.

Thanks

Well, here's Sony's explanation of G:
http://www.sony-mea.com/microsite/dslr/09/gLens/

Truth is it's really from Minolta and, according to
http://www.dyxum.com/lenses/lens_glossary.asp
it stands for Gold. More significantly, it stood for Gold before there were Gansta rappers.

As for adding "Master", well, it's clear what that refers to: the idea that it is the master of it's purpose, an ideal from which lesser copies will be made. The concept of a "Gold Master" generally is that it is the ultimate version, without flaws and perfectly ready for release and widespread use.

Personally, I find these little extra badges and colored lines used by lensmakers to be rather pointless... but hey, it's just branding.

Link | Posted on Apr 21, 2016 at 10:29 UTC
In reply to:

ProfHankD: Why is this lens $406.52 for E mount and $339.00 for u4/3?

Actually, amazon has a whole bunch of sellers for each, with consistently higher pricing for E. However, you are right that it isn't always so -- e.g., B&H has the E one for $339 as a pre-order. 42nd Street has the E one in stock, but at $399. It sounds like sellers are taking advantage of a short supply for the E mount version...?

Link | Posted on Apr 21, 2016 at 03:41 UTC
In reply to:

ProfHankD: Why is this lens $406.52 for E mount and $339.00 for u4/3?

In the "Support DPReview. Shop with amazon.com" ad above.... it also says "IN STOCK" for both, yet takes "3-4 business days" to ship the E and "24 hours" for the u4/3...?

Link | Posted on Apr 21, 2016 at 02:46 UTC

Why is this lens $406.52 for E mount and $339.00 for u4/3?

Link | Posted on Apr 21, 2016 at 01:38 UTC as 19th comment | 5 replies
In reply to:

ProfHankD: Really very much like my ancient Tamron SP 90mm f/2.5... which is mostly a good thing, with great bokeh and sharpness. Unfortunately, this still seems to flare too easily... and in not particularly nice patterns?

I know it's a very different optical design, but it still feels like a modified Double Gaussian rather than a more typical long macro design. Adding elements can help, and is enabled by good coatings, but it looks like 14 might be more than the coatings can support. I really don't worry much about AF... and I'm a Sony E user (mostly FF, but some APS-C too), so this lens really wasn't designed for me.

Link | Posted on Apr 19, 2016 at 13:44 UTC

Really very much like my ancient Tamron SP 90mm f/2.5... which is mostly a good thing, with great bokeh and sharpness. Unfortunately, this still seems to flare too easily... and in not particularly nice patterns?

Link | Posted on Apr 19, 2016 at 13:26 UTC as 27th comment | 3 replies
In reply to:

daqk: Got a Chinese "PRO" one last year (IOS+Android) reads SD and mSD card, plus a full size USB port (for windows ...) can also be set as OTG plugs in to Android phone. The APP is not top notch but the hardware is almost perfect for IOS8/9. Paid US$10.
-Just can't believe this made news ...

Yeah, not awesome at $42, is it?

Link | Posted on Apr 19, 2016 at 10:23 UTC
On article Swirly bokeh: Lensbaby announces Twist 60 lens (120 comments in total)
In reply to:

ProfHankD: Hey, if Lomography can sell big pseudo-old-style lenses, Lensbaby can make a modern lens allowing you to play with the same effects for less. Good for Lensbaby. Can you do this cheaper with certain old lenses? Yeah, pretty much. So what? Lensbaby has 'em new and you get to play all their freestyle tilty/shifty games with it too.

That said, do I want one? Nope. :-)

Rishi: swirly bokeh are a combination of defects, mostly internal vignetting, but also field curvature, etc. That said, it isn't particularly difficult to replicate a good approximation to the effect. Lensbaby adds the tilty/shifty stuff to that, which is harder to fake. Anyway, I really don't care in that I've never found that look attractive and if I want it in a new lens, my $25 Fujian 35mm f/1.7 has plenty of the look (for an APS-C sensor).

Link | Posted on Apr 15, 2016 at 11:00 UTC

Interesting. I wonder how well "Vibration Reduction" works in microgravity?

Link | Posted on Apr 14, 2016 at 20:40 UTC as 48th comment | 2 replies
On article Swirly bokeh: Lensbaby announces Twist 60 lens (120 comments in total)

Hey, if Lomography can sell big pseudo-old-style lenses, Lensbaby can make a modern lens allowing you to play with the same effects for less. Good for Lensbaby. Can you do this cheaper with certain old lenses? Yeah, pretty much. So what? Lensbaby has 'em new and you get to play all their freestyle tilty/shifty games with it too.

That said, do I want one? Nope. :-)

Link | Posted on Apr 14, 2016 at 15:23 UTC as 3rd comment | 4 replies

In the past few years it seems everybody has discovered that you can stick an array of cameras together for 360 capture. The Surround 360 does not seem to be a particularly clever nor cheap way to construct the multi-camera, and I wouldn't call overnight stitching fast. As far back as 1999, my research group showed two different multi-camera 360-degree rigs on autonomous platforms, with real-time stitching and video wall pan/zoom on a Linux cluster (fed captures via 802.11 wireless), in our research exhibit at IEEE/ACM SC99: http://aggregate.org/EXHIBITS/sc99_360.jpg

That said, we didn't do stereo, and the stereo video processing and encoding is far from trivial. I applaud Facebook freely releasing the design and software for others to use and help improve. I look forward to the actual open source release, which they say will happen "on GitHub this summer."

Link | Posted on Apr 13, 2016 at 05:25 UTC as 8th comment | 1 reply
In reply to:

ProfHankD: That "decoupling the shutter angle of capture from the shutter angle required for artistic effect" sounds like they've been reading my research papers on TDCI (time domain continuous imaging). :-)

Interesting that they are saying "755 RAW megapixels"... I guess they've given up on calling them megarays. Probably a good idea too.

ThePhilips: The EI conference (like many research conferences) takes a while to get most papers indexed online and doesn't have the official link up yet; the paper was an interactive presentation at the conference and the slides are just the 5-minute overview presentation advertising that. However, until EI has the official link up, here's a link to the paper at my WWW site:
http://aggregate.org/DIT/EI2016/eiTDCIFinal.pdf

You'll also find a bunch of my earlier publications on TDCI online; in fact, I've posted links to them at DPReview over the last few years.

Link | Posted on Apr 12, 2016 at 10:36 UTC
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