migus

Lives in Switzerland Zurich, Switzerland
Works as a research
Joined on Nov 11, 2009

Comments

Total: 222, showing: 1 – 20
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On article Woof! Sony a6500 sample images are here (365 comments in total)
In reply to:

eno2: I really don't like the Sony processing engine, colors are bad, NR is strong and sharpening is high leading to high artifacts at higher ISO values. Once again, the Sony JPG engine is one of the worst out there. :(

Those who care so much about IQ as to avoid JPG and take the pain of RAW 'development' may benefit from investing a few $ more for a 10bit screen, e.g., an oldie 2.5K that can be bought cheaply today:

"Of course, the ZR30w delivers in color gamut. Note that in the volumetric 3D plot, the wireframe plot is the ZR30w, and the solid plot is AdobeRGB 1998 - that’s right, we’ve exceeded the AdobeRGB color space. The raw data is impressive, the display manages 111.36% of coverage, the highest we’ve tested. In this case, we’ve exceed the manufacturer claims of 99% AdobeRGB by a notable margin. I have no trouble believing that HP's claims about 1+ billion colors are totally accurate - you have to see it in person to believe it. There are just some colors I'm used to not seeing represented very well; reds and blues especially, and the photos that I have looked at are spectacular."
http://www.anandtech.com/show/3754/a-new-30-contender-hp-zr30w-review/4

Link | Posted on Nov 21, 2016 at 05:16 UTC
On article Woof! Sony a6500 sample images are here (365 comments in total)
In reply to:

eno2: I really don't like the Sony processing engine, colors are bad, NR is strong and sharpening is high leading to high artifacts at higher ISO values. Once again, the Sony JPG engine is one of the worst out there. :(

Colors seem quite natural seen on a 10-bit pro screen with 115% AdobeRGB color space. And camera's WB is also finely tunable, to suit other tastes.

However, i agree about the importance of a good JPG engine - particularly at this price point. Asking users to shoot RAW is akin to telling the BMW drivers to build their own engines if they want 0-60mph faster than 20sec.

Link | Posted on Nov 19, 2016 at 02:50 UTC
In reply to:

holin: Let's see what Canon's got in store: http://image-sensors-world.blogspot.fi/2016/10/more-info-on-canon-iedm-presentation.html

Smaller sensor, but notice the dynamic range.

@falconeyes and otto: Thanks! I started from
http://ericfossum.com/Presentations/2013%20OSA%20Quanta%20Image%20Sensor%20(QIS)%20Early%20Research%20Progress%20talk.pdf

pp.18 plots the shot noise

Link | Posted on Nov 11, 2016 at 14:03 UTC
In reply to:

holin: Let's see what Canon's got in store: http://image-sensors-world.blogspot.fi/2016/10/more-info-on-canon-iedm-presentation.html

Smaller sensor, but notice the dynamic range.

"what digital accumulation means" : pls. provide the relevant links... currently it makes no sense to me to compound digital accumulation with ISO 0 and oo exposure time

Link | Posted on Nov 10, 2016 at 19:16 UTC
In reply to:

holin: Let's see what Canon's got in store: http://image-sensors-world.blogspot.fi/2016/10/more-info-on-canon-iedm-presentation.html

Smaller sensor, but notice the dynamic range.

"A sensor with digital accumulation would be a true isoless sensor, with almost ISO 0 as base ISO and almost infinite dynamic range at base iso."

the infinite dynamic range is practically limited by the S/N ratio at the bottom (e.g., consider the shot noise), and the sensel integration capacity (and readout speed) at the top.

Irrespective of the above, the reduced 64dB of DR (10bit?) seems an artifact of the read bandwidth and the global shutter implementation.

Link | Posted on Nov 9, 2016 at 14:34 UTC
In reply to:

migus: Such laptops, whether Mac or Win, are our daily workhorses - doing jobs too many to list, some essential to our digital lives.

Such a 1-3K$ machine is the *hub* of bespoke digital live, and hopefully more than just a phone/tablet on steroids with an attached keyboard.

In its corporate Alzheimeir aka. triumph of form vs. content, Apple has incrementally crippled this digital hub into a catatonic shiny bling.

Devoid of basic functionality and previous features, adding in stead questionable 'features', e.g., an OLED function bar (BTW, why not an OLED UHD HDR display?).

I'll just skip my free MBP upgrade and buy a more functional/connected Win laptop... for much less $.

http://www.theverge.com/2016/11/4/13524272/apple-cutting-usb-c-adaptor-prices-macbook-pro

after reading
http://www.theverge.com/2016/11/5/13523372/usb-c-macbook-adapter-donglelife-problems-thunderbolt

i incline for the 14" Lenovo hybrids, some with OLED display (unfortunately not 3:2)... Also i consider the excellent Dell XPS series, besides the new HPs... plenty of options, since i learned how to enjoy win10 w/o its 20+ spyware "apps and services" and Cortana :-)

Link | Posted on Nov 6, 2016 at 15:31 UTC
In reply to:

Stereodesign: Quite frankly these adapters should be included in the box.
they are still over priced.

see
http://blog.fosketts.net/2016/10/29/total-nightmare-usb-c-thunderbolt-3/

ports and cables rated for 1500-10K actions actually break at a low fraction of the ideal rating
http://www.anandtech.com/show/8377/usb-typec-connector-specifications-finalized

"cables wear out at an unacceptable pace" https://news.ycombinator.com/item?id=7649405

Link | Posted on Nov 6, 2016 at 07:50 UTC
In reply to:

justmeMN: Nothing says "design elegance" quite like adaptors / dongles. :-)

...unless the said adapters are slower, partly incompatible (wrt. the targeted app), and mostly forgotten/lost.

Link | Posted on Nov 5, 2016 at 18:53 UTC
In reply to:

entoman: Cheaper accessories doesn't make up for a bad design decision.

Correction: "a bad design decision" => A string of bad decisions made since years in the name of "design".

Link | Posted on Nov 5, 2016 at 18:47 UTC

Such laptops, whether Mac or Win, are our daily workhorses - doing jobs too many to list, some essential to our digital lives.

Such a 1-3K$ machine is the *hub* of bespoke digital live, and hopefully more than just a phone/tablet on steroids with an attached keyboard.

In its corporate Alzheimeir aka. triumph of form vs. content, Apple has incrementally crippled this digital hub into a catatonic shiny bling.

Devoid of basic functionality and previous features, adding in stead questionable 'features', e.g., an OLED function bar (BTW, why not an OLED UHD HDR display?).

I'll just skip my free MBP upgrade and buy a more functional/connected Win laptop... for much less $.

http://www.theverge.com/2016/11/4/13524272/apple-cutting-usb-c-adaptor-prices-macbook-pro

Link | Posted on Nov 5, 2016 at 17:33 UTC as 125th comment | 2 replies

While we get our MBP machines from our employer in any desired config and model, and, i was waiting for an update from Apple... no thanks!

I'll just get another Lenovo, with most (if not all) the ports I need - and also OLED display (deep blacks, few % less battery life for bright bgnds.).

My only regret is missing the productive 3:2 display (vs. Lenovo's 16:9), which currently seems available mainly from Apple and MS (Surface Pro).

Link | Posted on Nov 5, 2016 at 14:31 UTC as 80th comment
In reply to:

Kiwisnap: Just....Wow.

Microsoft have out-Appled Apple!

No fan of MS here, but KUDOS for its Surface h/w !

3:2 screens are great for real work and for surfing...! Yet it seems that Apple and MS are still alone in the 3:2 ratio, while the PC industry is still peddling its 16:9 (error) screens for "productivity" :-)

Link | Posted on Oct 27, 2016 at 03:52 UTC
In reply to:

Roman_93: In a time where the goverment is allowed to scan every part of private life (or simply does it...) it is kind of ridiculous to limit private people so strong.

"What if their high resolution camera can read what you have on your phone?"
Granted - a potential risk, and a noisy one at that. The drone battery will last perhaps 20min, hence its spying window.

OTOH, Google's/Android, Apple's/iOS, MS/Windows et al. (FB, NSA etc.) 'analytics & big data' windows are open for business 24/7. Ditto for each garden variety mobile app, from the millions today.

Not only do they collect your screen and other data, but also they share it (as in sell) with a few K other firms, mainly advertisers. Again, 24/7.

Link | Posted on Oct 26, 2016 at 03:38 UTC
In reply to:

Reactive: When it comes to big budget movies, I wonder how many of those names on the end credits will simply be replaced with "Drone operator"? No scaffold, no boom, no helicopter, no grip, no... could 30 staff be replaced with just a couple of guys?

Helicopter = 100$ bill chopping machine (grinds thru them like a lawn mower) in rental, pilot, gas, insurance fees

Drones are not only (much) cheaper, but also nimbler and less intrusive into the scene.

Link | Posted on Oct 20, 2016 at 13:06 UTC
On article Elevating X-Trans? Fujifilm X-T2 Review (2178 comments in total)

Missing info: "Approx. 507g (including battery and memory card)" (from the Fuji site)

While in line with the other APS-C flagships, at such size/mass I'd rather haul a FF system - airlines' tougher rules, long trails, ski, bike etc. And yet, Fuji's lenses and IQ are quite enticing vs. my Sony options.

Link | Posted on Jul 8, 2016 at 04:05 UTC as 263rd comment
In reply to:

Achiron: 1051g "compact" for hiking? Pretty ridiculous. "E-PL7"+"75-300"+"12-50" will cost roughly 1600$ and weigh same as the RX10III (and ultimately take less space) while giving results ten times better.

+1: IMHO even abstracting its $1500 tag, a 2+ lbs. bridge is neither light nor small as of mid'16 for challenging adventures.

a) Want a (very) long reach across vast distances (+haze, pollen et al. - as shown above), or wild life?
I'd pick small sensors for daylight, knowing that haze + noise are a naughty couple particularly at dawn/dusk - and LR's your friend. Granted, i shoot few dozens such shots/yr. and tend to forget about them.
As a bonus, one gets also excellent 1cm macros from the tiny sensor, all in a cheaper and lighter camera.

b) OTOH, want a better IQ per ounce, in any light?
Any modern MILC with its kit zoom would do fine under a pound - arguably excepting the subpar Sony pz16-50.

c) Want the ultimate IQ, w/o the long reach?
Plenty of FF with a light kit or 50mm in the 2-3 lbs.

d) Then it's the 11-oz. RX100, for those 1"=best compromise :-)

yet a 2+ lbs bridge costing more than the median price of the above options seems a weird choice for the educated hiker.

Link | Posted on May 12, 2016 at 11:09 UTC
In reply to:

aramgrg: Do you guys cover this as news because these are stupidly expensive?

IMHO such news, i.e. noise, mostly diminish the value of DPR.

Link | Posted on May 8, 2016 at 09:07 UTC

First I've wondered

1) Why the apparent multiple redundancies?
A 19mm has a nearly 90-deg. AOV, hence 6 such lenses would suffice for standard pano stitching; see hugin/ptgui/ICE.

2) Why bottom cameras, or, is this UFO mounted on car rooftops, drones...?

Then i read the optical flow [thanks DPR for educating us!] and stumbled after the (incomplete) equation set on:

"This is an equation in two unknowns and cannot be solved as such. This is known as the aperture problem of the optical flow algorithms. To find the optical flow another set of equations is needed, given by some additional constraint. All optical flow methods introduce additional conditions for estimating the actual flow."

I surmise that the 3-4x 'redundant' coverage may provide the additional constraint / set of equations, as used in drones and self-driving cars. I also suspect that the extra generous (over)-coverage is sufficient, but not necessary (3D may actually change this).
Google has now OPEN competition :-)

Link | Posted on Apr 13, 2016 at 02:51 UTC as 10th comment | 1 reply
On article Upwardly mobile: Sony a6300 Review (2156 comments in total)
In reply to:

vidcam: I bought 3 of these when they came out. My intention was to use them for shooting inside of cars on reality shows. I thought I could rig these up and shoot scenes using this camera as I would use a go pro for dialogue scenes.
Well I was disappointed, it only records for about 20 minutes before it overheats and shuts down. That may seem like a long time, but I have never worked with a "reality" producer that says cut. So 20 minutes just does not work for my needs. The record button for video is poorly designed. The kit lens is difficult to use and not very good. The menu is more difficult to use than any camera I have put my hands on. When your in manual there are still functions that are operating on auto. I am sure I could get better at it, but overall I am very disappointed.
I really wanted to like this camera, but to use it requires a large investment of time to learn the menu and navigate quickly.

"I'm sorry but I don't believe you. Nobody buys three cameras before even trying one of them out."

Business purchases may be more impulse- or budget-based, then testing and reviewing. Hence amortisation and writeoffs.

OTOH, this is rather orthogonal to the overheating issue that is officially known as a fact and ACKed by Sony accordingly.

IMO the overheating issue can be alleviated or even solved by the addition of an external heatsink or Peltier cooler.

Link | Posted on Apr 10, 2016 at 09:13 UTC
On article Upwardly mobile: Sony a6300 Review (2156 comments in total)
In reply to:

drivecancel: The 16-50 is a great lens if you consider being the worst kit lens as an achievement!

Sell a 1K$ camera with a kit zoom worth 3-4% of the system price? That's the lens used by the VAST majority of those buying this camera, who then may wonder why their pics aren't much better than those of a cheaper phone or P&S...?

And the reason why we often can buy on ebay et al. some hardly used Nex/Alpha cameras, with very few 100s-1000s actuations, for a song. That's how i got my 3 Nex cameras, all with kit zooms: The original owners up-/down-graded searching for better pics and/or smaller packages (hence no bag of prime lenses). A few bought a higher end phone in stead...

One may argue at length here, yet the reality of an underachieving pz1650 kit remains a blemish for Sony's enthusiast cameras.

How about designing a compact, non-PZ, even non-OSS (for the enthusiasts who know about tripods and ISO) 16-50/3.5 kit worth of the 6300? Small in size, decent in optics, big in pictures...

Link | Posted on Apr 10, 2016 at 03:47 UTC
Total: 222, showing: 1 – 20
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