JordanAT

JordanAT

Lives in United States VA, United States
Joined on Mar 31, 2012

Comments

Total: 482, showing: 1 – 20
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On article Samsung launches first removable UFS memory cards (175 comments in total)
In reply to:

TonyPM: Why make a new format when you can make the existing format better?

What will happen If micro SD manufacturers make those as fast as samsungs new format but cheaper?

The UHS-II standard tops out at 312.5 MB/s transfer speed. That makes it only about 2/3 the max read speed, but is still faster than anything can write - and write speed is what really matters for most applications. And UHS-II is backwards compatible with uSD. The write bottleneck is on the silicon, not on the interface. That may change in the future, but I would hope that whatever is "next" is an order of magnitude faster than what is on the market, not a paltry 60%.

Link | Posted on Jul 8, 2016 at 19:53 UTC
In reply to:

Roland Karlsson: One question - what is that green "laser" ray in the COSRAY image?

It's probably a laser satellite ranging rig. http://goo.gl/9l86Gi

I don't know if it's one of the ones from the Goddard group, but it's almost certainly what it is. I worked in that group when I was an aerospace engineering student back in the late 80s. There are satellites which have corner cubes (LAGEOS - http://goo.gl/PKV03R ) on them, as well as CC set on the moon during Apollo, which are used for ranging. Back then, the laser is was an Nd:YAG pumped laser at 532nm with a 4" diameter. The time of flight is recorded (pulses @ 5 Hz) over the visible orbit and the exact location on earth is known very precisely and is used to track global tectonic plate movement.

The old units (back then) were mounted in semi-trailers, and the newer (TLRS) units were mounted in large box truck-sized trailers. The TLRS units used these new fangled things called CCDs to collect - the old ones used Photomultiplier Tubes. We could detect 3-5 photon returns from the moon. (Take *that* Nikon!)

Link | Posted on Jul 4, 2016 at 17:22 UTC
In reply to:

fuxicek: There should be easy way around this patent, just activate "airplane mode". Unless they come with a new patent, that allows you to turn on the "airplane mode" only on airplanes and nowhere else....

And, properly implemented, the sensor would need to receive a certain minimum level of IR based on the scene to prevent you from putting an IR notch filter over the lens.

Link | Posted on Jul 1, 2016 at 18:34 UTC
In reply to:

sh10453: A "microSD", at such speeds, especially write speeds, and 4K video, seems to be a recipe for disaster, no matter what SanDisk claims about withstanding extreme temperature.
High temperature is electronics worst enemy.

Time will tell, but I would hate to see the videographer's tears half-way in a critical 4K commercial shoot, a wedding, or other scenes that cannot be repeated, due to card failure caused by extreme temperature.

I avoid microSD's, and devices that can only use microSD's as much as I can.
Unfortunately, that cannot be avoided with phones, or at least most phones.

Have you taken apart an SD card lately? They're almost entirely air. The contacts at the front are connected to a (surprise!) microSD sized package at the front of the card and the back half is just empty space. I've not dissected a 256 or 512GB card, and I suspect they are more fully populated, but the <16GB cards I've popped open are all essentially microSD size silicon inside.

Link | Posted on Jul 1, 2016 at 18:29 UTC
On article Hands-on with Hasselblad X1D (802 comments in total)
In reply to:

JordanAT: I'm curious why the lens is so (physically) large. It looks like it could have been easily placed in a housing with a 42mm filter ring and made 20-30mm shorter. Is there thermal management going on in the barrel? Massive gearing? It's like someone from marketing looked at it and said, "you know, for four grand it should look bigger." Maybe just 67mm is the standard filter size for most Hassy lenses (seriously - I've held one twice in my life, the last time was 20+ years ago...I really don't know if there is a standard they were matching).

Otherwise, it looks like a well=thought out camera. It's certainly too early to say, but it *feels* like someone fired all the MBAs, pulled together some real photographers and engineers and decided to build a high end still camera that mattered.

@Greynerd - I'm completely fine with using better optics over software correction, but I'm unaware of any lens which has internal optics which are appreciably larger than the front or rear elements. Physics for convex lenses generally dictates the opposite - that internal elements are smaller because the light rays are converging towards the interior of the group and then diverging until the rear element where they emerge. The front element of this lens couldn't be more than 30mm (photo 1), and the rear element not more than 20mm (Photo 13).

The leaf shutter certainly defines the maximum barrel dimension, and I presume that it was just easier (or sexier) to make the whole barrel that diameter, despite the weight penalty.

Link | Posted on Jun 24, 2016 at 13:46 UTC
On article Hands-on with Hasselblad X1D (802 comments in total)
In reply to:

JordanAT: I'm curious why the lens is so (physically) large. It looks like it could have been easily placed in a housing with a 42mm filter ring and made 20-30mm shorter. Is there thermal management going on in the barrel? Massive gearing? It's like someone from marketing looked at it and said, "you know, for four grand it should look bigger." Maybe just 67mm is the standard filter size for most Hassy lenses (seriously - I've held one twice in my life, the last time was 20+ years ago...I really don't know if there is a standard they were matching).

Otherwise, it looks like a well=thought out camera. It's certainly too early to say, but it *feels* like someone fired all the MBAs, pulled together some real photographers and engineers and decided to build a high end still camera that mattered.

I can buy the leaf-shutter argument, but all you need to do is look at the front and rear optics of the lens in the photos to see that you don't really need much glass to make an F3.5 lens with a 45mm FL.

Link | Posted on Jun 24, 2016 at 03:17 UTC
On article Hands-on with Hasselblad X1D (802 comments in total)

I'm curious why the lens is so (physically) large. It looks like it could have been easily placed in a housing with a 42mm filter ring and made 20-30mm shorter. Is there thermal management going on in the barrel? Massive gearing? It's like someone from marketing looked at it and said, "you know, for four grand it should look bigger." Maybe just 67mm is the standard filter size for most Hassy lenses (seriously - I've held one twice in my life, the last time was 20+ years ago...I really don't know if there is a standard they were matching).

Otherwise, it looks like a well=thought out camera. It's certainly too early to say, but it *feels* like someone fired all the MBAs, pulled together some real photographers and engineers and decided to build a high end still camera that mattered.

Link | Posted on Jun 23, 2016 at 15:32 UTC as 73rd comment | 6 replies
On article All about that lens: Sony Cyber-shot RX10 III review (421 comments in total)
In reply to:

JordanAT: I had a chance to hold one of these over the weekend, and I was surprised how deep (front to back) the body is. I don't have small hands, but it actually felt a bit large/awkward (and I used to shoot Nikon F & D series). Beautiful images, though. If I ever go back to a non-pocketable fixed lens camera, this would be at the top of my list.

Now I feel special. ;-) It's like reddit gold, but flashier (and without benefits). :-D BTW - I messed with one at the B+H Store in NYC while on vacation, along with several others I'm considering. Living in a small town, I've practically forgotten what it's like to actually have a store that stocks anything anymore.

Link | Posted on Jun 22, 2016 at 16:59 UTC
On article Medium-format mirrorless: Hasselblad unveils X1D (1188 comments in total)
In reply to:

historianx: 5 had it. LOL

Meh - I've had bigger.

Link | Posted on Jun 22, 2016 at 15:02 UTC
On article Medium-format mirrorless: Hasselblad unveils X1D (1188 comments in total)
In reply to:

s_grins: LOL! Another 43 camera!
.8 kilo body, and, I guess, at least .5 kilo lens.
Maybe it makes sense for studio work, but does it need GPS?

Are you kidding? With a pancake lens it's barely larger than a Sony RX10-III - the perfect travel camera with better optics, much larger sensor, etc. Everyone who bought the Sony is now crying in their beer.

/s... but on the serious side, this is not much bigger/heavier than a 1" superzoom that people lug around, why not take it into the field? I mean, if you were trying to decide between zoom of a RX10-III and the quality of a Leica Q, what's another 4-5 grand for the ultimate?

Link | Posted on Jun 22, 2016 at 15:02 UTC
In reply to:

Digital Suicide: They can make even octa-cam system, I'm staying on single lens cameraphone. Hopefully not all of the makers will follow this ridiculousness.

To heck with an octa-cam...we're going all the way to SIXTEEN!

http://www.gizmag.com/light-camera-combines-16-sensors/39764/

Link | Posted on Jun 21, 2016 at 22:10 UTC
In reply to:

Szumi: I'd like both cameras to be the same focal length. I really liked those view master slides when I was a kid.

You jest, but it's coming. The upgrade to UHD for VR use (slip your phone into a viewer to turn it into a VR headset) means they're alreading thinking about your phone as a real VR device. Two cameras with identical lenses spaced the length of a phone body is a perfect setup for a 3D experience...it's just a bit of software away from a working VR overlay.

Link | Posted on Jun 21, 2016 at 22:08 UTC
On article All about that lens: Sony Cyber-shot RX10 III review (421 comments in total)

I had a chance to hold one of these over the weekend, and I was surprised how deep (front to back) the body is. I don't have small hands, but it actually felt a bit large/awkward (and I used to shoot Nikon F & D series). Beautiful images, though. If I ever go back to a non-pocketable fixed lens camera, this would be at the top of my list.

Link | Posted on Jun 21, 2016 at 21:11 UTC as 87th comment | 4 replies
On article mini Plaster Hand is a camera mount on a belt (44 comments in total)
In reply to:

JordanAT: Does it also have a clip for the mistletoe?

On a more serious note, I have an old Eddie Bauer mount which is a collapsable 3 leg mini-tripod with a velcro strap that is used for the same kind of purpose - mounting to rails and poles. Seems a touch more practical, though I wish it was also magnetic. here it is: http://thumbs.ebaystatic.com/images/g/KbEAAOSwbwlXAGUG/s-l140.jpg

That EB version goes back at least 15 years; I think I bought it (or maybe got it as a gift) back in '99 or '00

Link | Posted on Jun 10, 2016 at 12:11 UTC
On article mini Plaster Hand is a camera mount on a belt (44 comments in total)

Does it also have a clip for the mistletoe?

On a more serious note, I have an old Eddie Bauer mount which is a collapsable 3 leg mini-tripod with a velcro strap that is used for the same kind of purpose - mounting to rails and poles. Seems a touch more practical, though I wish it was also magnetic. here it is: http://thumbs.ebaystatic.com/images/g/KbEAAOSwbwlXAGUG/s-l140.jpg

Link | Posted on Jun 9, 2016 at 20:53 UTC as 24th comment | 2 replies

Battery life? Quick charge capable?

I'm sold on the Stainless case, the high end processor, wireless charging, and the 128GB of built in memory - I'll skip the SD card. I'm even good with the medium sized, low (aka reasonable) resolution screen -especially if it translates into multi-day performance. The night vision thing may be a gimmick (maybe you could combine it with that pentaprism/periscope case for the ultimate creeper camera) but it could be useful in the oddball circumstance.

Link | Posted on Jun 8, 2016 at 02:20 UTC as 5th comment | 1 reply
In reply to:

sirhawkeye64: After reviewing the image sample, I'd still go with an a6000 instead. Pictures seemed soft and a decent level of noise even at ISO 800, but then again, it's a 1" sensor. But the images should be able to be clear at least in my opinion.

No, you don't get a cleaner image unless you have a better sensor, and if you increase the ISO, you get more noise unless you have (again) a better sensor.

I'm sure that @Sioghan A meant to say more photos per photosite, not per mm. As someone who started working with optics and sensors when CCD sensing was somewhat new, and photomultiplier tubes were the standard because they allowed us to see returns from targets with as few as 3-5 photons, I'm very well aware of the tradeoffs.

The OP was suggesting a cost-effective body with a larger sensor to try and get sharper images and lower noise, but seemed to ignore the fact that a single lens covering the 24-600mm field of view simply doesn't exist for the a6000, and throwing away 1-2 stops of f number to get an "affordable" or "compact" lens effectively eliminates any large sensor ISO advantage. And having to carry around a whole case of lenses in the bargain.

Link | Posted on Jun 5, 2016 at 17:16 UTC
In reply to:

sirhawkeye64: After reviewing the image sample, I'd still go with an a6000 instead. Pictures seemed soft and a decent level of noise even at ISO 800, but then again, it's a 1" sensor. But the images should be able to be clear at least in my opinion.

No f/4, period. I'm not concerned about getting a *shallower* depth of field AT 220mm and diffraction is not limiting at this end of the lens. I'm more concerned about photons per square mm on the sensor. If you get 4x as much light and spread it out over 4x as much sensor, you've gained nothing with regard to your shutter speed.

Link | Posted on Jun 2, 2016 at 20:22 UTC
In reply to:

sirhawkeye64: After reviewing the image sample, I'd still go with an a6000 instead. Pictures seemed soft and a decent level of noise even at ISO 800, but then again, it's a 1" sensor. But the images should be able to be clear at least in my opinion.

What set of lenses would you recommend to cover the 24 to 600mm range at f/4 or faster?

Link | Posted on Jun 2, 2016 at 19:39 UTC
On article Setting new standards: Nikon D5 Review (496 comments in total)

Sigh...I miss my Nikon gear. But, unlike film cameras, new digital SLRs drop in value faster than new automobiles. Heck, it's how I got my D3s - 1/2 the list price just a week after the D4 came out. Sold it for 1/2 that 4 years later when I realized I just didn't shoot enough. Still, stuff like this makes me drool. Thanks for letting us normal folk live (and shoot) vicariously through your reviews. :-)

Link | Posted on Jun 2, 2016 at 00:11 UTC as 99th comment
Total: 482, showing: 1 – 20
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