jhinkey

jhinkey

Lives in United States Seattle, WA, United States
Works as a Aerospace Engineering Consultant
Has a website at www.hinkey.zenfolio.com
Joined on Dec 27, 2005

Comments

Total: 552, showing: 1 – 20
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On article Now we know: Sony a9 is sharper than we thought (334 comments in total)
In reply to:

ijm5012: While this is all very interesting, is it not somewhat concerning that it was acknowledged that Sony's S-AF did not yield the sharpest shots? Being a sports/journalism camera, the overwhelming majority of users will be shooting the camera in either S-AF or C-AF, not MF (which is a PITA with focus-by-wire lenses, not even factoring in how time consuming it is). The fact that Sony's AF algorithm isn't better is somewhat concerning, especially on a camera that costs as much as the A9, and touts it's AF ability as one of its headline features..

Do Sony aX cameras have an AF fine-tune feature, that accounts for front or back-focusing issues due to PDAF? If so, it may be worth going through this exercise, and seeing what improvements are made regarding AF accuracy/sharpness. I know that going through it with older 4/3 lenses on my E-M1 II made a difference in improving the AF accuracy and resulting sharpness.

I have thus far been unimpressed with my A7RII AF accuracy in AF-S mode (never use AF-C for what I do) compared to my m43 cameras (Panasonic mostly). This is with the 85/1.8 as well - inconsistent AF - focus is almost spot on, but many times not in situations where it should be with easy AF targets (flat surfaces, high contrast content, & non-moving).

Link | Posted on Jun 22, 2017 at 16:32 UTC

That would be a shame if it didn't offer an Android version - it's one of my favorite photography tools . . . please offer an Android version!

Link | Posted on Jun 22, 2017 at 02:40 UTC as 3rd comment
In reply to:

Sirandar: Ummmm ...... what happened to your editors?

This is just some generic video of a generic plane with cheesy music. It isn't even particularly striking.

There are 1000s of videos more relevant to photography that this.

Not a big deal but I would prefer less on this or at least more compelling examples. Notice I didn't complain about the air show pictures previously some of which were interesting

Um, it's in the title of the article.

Link | Posted on Jun 17, 2017 at 03:31 UTC
In reply to:

KCook: It never spells out which plane is which. But the bigger of the two is enormous for a twin engine airplane!

Kelly

Yes, two big engines are more efficient that four smaller ones of equivalent overall thrust.

Link | Posted on Jun 17, 2017 at 03:30 UTC

Oh the things you can do with an empty plane and a lot of excess thrust at takeoff . . .

Link | Posted on Jun 17, 2017 at 03:29 UTC as 77th comment | 6 replies

Ah, what's old is new again . . . people have been doing this for a long time.

You don't actually need an optical grade concave mirror - you can set up a Schlieren system in several different ways (optical masks, Fresnel lens, etc.).

Things get really interesting when you take a system like this and way over-drive the LED and pulse it for very short durations at, say 1kHz, then use a RX10-III to record video at video high rates sync'ed to the LED light pulse.

All can be cobbled together with Amazon and ebay parts (plus some relatively cheap rented gear).

Link | Posted on Jun 16, 2017 at 00:53 UTC as 28th comment | 2 replies
On article First pictures from the new Nikon 8-15mm fisheye (137 comments in total)
In reply to:

Old Cameras: This is such an awesome concept. Circular and full frame fisheye lens all in one. I'd love to have one, just might have to.

It's not the first lens to do this, but I can see how it would be handy for those who know how to use such lenses.

Link | Posted on Jun 14, 2017 at 00:22 UTC
On article First pictures from the new Nikon 8-15mm fisheye (137 comments in total)

Would be great if we could get full resolution images . . . .

Link | Posted on Jun 14, 2017 at 00:21 UTC as 33rd comment
In reply to:

jhinkey: Great to have options.

I own the 35/2.8 Sony and it's too expensive for the IQ and build quality, though it's still a very good lens. 35/2 Lox - great build quality, not that great IQ for the price, no AF, but quite expensive.

I think this lens, if on par with the 35/2.8 Sony, will find a lot of happy buyers. Hopefully the QC will be good.

That being said, an excellent, compact 35/2 AF from Sony/Samyang/Zeiss would be even better to have.

Link | Posted on Jun 7, 2017 at 17:10 UTC

Great to have options.

I own the 35/2.8 Sony and it's too expensive for the IQ and build quality, though it's still a very good lens. 35/2 Lox - great build quality, not that great IQ for the price, no AF, but quite expensive.

I think this lens, if on par with the 35/2.8 Sony, will find a lot of happy buyers. Hopefully the QC will be good.

Link | Posted on Jun 7, 2017 at 17:09 UTC as 26th comment | 3 replies
In reply to:

M H S: I think the fps way too slow.. I'm surprised DPR didn't add a headline pointing out how much better the video would be if it had been shot with a Sony A9

In a hurry?
I suspect the FPS was chosen to give you a better idea of the speed at closest approach vs. farther away. I found it to be pretty good for time length.

Link | Posted on Jun 2, 2017 at 21:02 UTC

Pretty darned cool. Now if that was shot in 3D so you could see the depth of the cloud tops when at the closest approach that would be super amazing! Next probe perhaps (unless someone can do 3D reconstruction from this series of images).

Link | Posted on Jun 2, 2017 at 21:01 UTC as 19th comment
In reply to:

Bambi24: lol

$1200 for an f/4.5 fisheye zoom

And your point is you think it's a great price or not-so-great price?

I paid ~$500 for a 1970's vintage 16/3.5 AI full-frame fisheye (which is Nikon's best FF FE ever made), so if this brand new model equals the old AI's performance, but has zoom capability, AF (not so useful), full electronics, etc. then I'd say it's a decent price.
If it has sub-par optical performance (sharpness, flare, ghosting, etc.) then I'd say it's over-priced.
It's all relative.

Link | Posted on May 31, 2017 at 13:29 UTC
In reply to:

hotdog321: The big question is did they fix the various software issues? The Surface Pro has always boasted some very nice specs and really nice display, but a large number of users (I'm guessing 25%) had serious software glitches in the power, keyboard, display, operation, sleep, etc. I was going to buy the loaded i7 version, but there were so many Surface Pros being rated one star or simply returned that I decided to give it a miss.

Bought two surface Pro 3's for my daughters and yes they have some minor issues (similar to what mosc described), but overall pretty decent machines for the large variety of use that they get.
Plus they seem to be pretty rugged as teenagers are not the most careful computer users (lots of falls).

Link | Posted on May 25, 2017 at 16:47 UTC
In reply to:

jhinkey: Don't know much about Canon, but Nikon has at least 4 basic generations of F-mount lenses to support with their digital cameras:
AI - Manual Focus, Aperture Ring, Mechanically Controlled Aperture
AF(-D) - Screw Drive AF, Aperture Ring, Mechanically Controlled Aperture
G - AFS, No Aperture Ring, Mechanically Controlled Aperture
E - AFS, No Aperture Ring, Electronically Controlled Aperture
(or something like the above anyways).
There are a lot of these F-mount lenses, many of which are still excellent performers and still for sale today despite their age.

Nikon risks alienating many of their Nikon loyal if they do a mount/adapter combination that excludes the use of many of these non-G and non-E lenses.

Thus I suggest they should make a mirrorless full frame with a short mount distance along with immediately available excellent mechanical/electrical adapters to allow use of all that legacy glass. Being able to mount M-mount lenses (via adapter) would be a huge plus.

Certainly the non-AI lenses are there, but they are far fewer and can be physically converted/modified to become AI. The AF/AF-D variation is subtle and not a big issue for converters or compatibility.

Link | Posted on May 23, 2017 at 15:24 UTC

Don't know much about Canon, but Nikon has at least 4 basic generations of F-mount lenses to support with their digital cameras:
AI - Manual Focus, Aperture Ring, Mechanically Controlled Aperture
AF(-D) - Screw Drive AF, Aperture Ring, Mechanically Controlled Aperture
G - AFS, No Aperture Ring, Mechanically Controlled Aperture
E - AFS, No Aperture Ring, Electronically Controlled Aperture
(or something like the above anyways).
There are a lot of these F-mount lenses, many of which are still excellent performers and still for sale today despite their age.

Nikon risks alienating many of their Nikon loyal if they do a mount/adapter combination that excludes the use of many of these non-G and non-E lenses.

Thus I suggest they should make a mirrorless full frame with a short mount distance along with immediately available excellent mechanical/electrical adapters to allow use of all that legacy glass. Being able to mount M-mount lenses (via adapter) would be a huge plus.

Link | Posted on May 23, 2017 at 14:43 UTC as 122nd comment | 3 replies

I suspect the GoPro DID NOT save his life, as just about any high velocity round would go directly through a GoPro and still kill the person on the other side. Though hard to tell from the video, this was likely a very near miss that just took out the GoPro.

Scary nonetheless.

Link | Posted on May 22, 2017 at 19:07 UTC as 30th comment | 2 replies
On article Sony a9: more speed, less dynamic range (666 comments in total)
In reply to:

bilcobarnes21: Am I the only one getting a little tired of DP Reviews obsession with the A9 and Sony in general?
It makes me wonder what involvemt Sony have with DPR 🤔

That's just plain silly. Sony is putting out some very innovative products and DPR is doing a good job reviewing them. If Nikon or Canon did the same DPR would have the same kind of coverage.

Link | Posted on May 18, 2017 at 13:48 UTC
On article Sony a9: more speed, less dynamic range (666 comments in total)

As expected - no free lunch! Wait for the A9R (or A7RIII) if you want the best DR at low ISO. Still an amazing camera.

Link | Posted on May 18, 2017 at 13:44 UTC as 108th comment

For extended tripod use this, though a little pricey, is a great thing.
Maybe wait to grab a used one or when the prices settles down a bit after they are actually available to buy (currently pre-order only).

- J

Link | Posted on May 6, 2017 at 16:27 UTC as 2nd comment
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