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: 277, showing: 1 – 20
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Well, I hope there are more advantages to this than just getting increased resolution. There are only a handful of native m43 lenses that can handle 40MP of true resolution. Hopefully there are some dynamic range advantages that come along with this.

Direct link | Posted on Dec 7, 2014 at 20:50 UTC as 11th comment | 4 replies
In reply to:

PhotoKhan: The (blatant lack of) quality of those images is extremely detrimental for the backing solicitation.

...and it just adds to the perplexity on why this would be needed in supplement to very fast shutter-speeds + standard flashes + advanced triggering.

Matt Kane should have stayed with Triggerrap.

As soon as my ADA triggers arrive I can show him, with glorious image quality, why this is a very probable "fail".

"By PhotoKhan (8 hours ago)

The (blatant lack of) quality of those images is extremely detrimental for the backing solicitation."

Really? Anyone who does very high speed flash (where you need ~1 microsec flash durations) sees this as very exciting - the image quality is just fine. I've used systems that had one small Xenon flash lamp that then needed a condenser lens to spread the light out that had a the shortest duration being 1 microsecond and cost several thousand $$.

This has many uses in its current form and with some tweaking could have even more.

Direct link | Posted on Dec 2, 2014 at 17:17 UTC
In reply to:

NTONE: Yeah I'd be interested to see the spec too: colour and duration. But the speed it can do is amazing!

See my follow-up post below.

Direct link | Posted on Dec 2, 2014 at 06:12 UTC
In reply to:

jhinkey: Having used industrial/scientific high speed flash lamps in the past, the questions are:
- What's the light output curve look like and how is the flash duration specified/calculated
- Does it have the ability to have a longer duration flash with more total output?
- What's the "jitter" in trigger vs. when the flash actually occurs
- What's the light spectrum - full or is more heavily in the blue

Very cool indeed if it has decent specs.

The rest of their response:

Yes, you will get more total light with a longer pulse. In fact it's almost linear. i.e. 5us is about 10 times as much total light as 500ns.
So far we've fired these LEDs several thousand times. There's no reason we can't fire them many thousands more. We'll be doing a proper burning-in test once we've finished photography with the prototype and no longer need it for that.

We could theoretically have a version with larger reflectors to better collimate the beam. We're currently using 28 degree ones, which were a good balance between size and angle. I'd say a better option would be a fresnel in front of it. This is something we'll be testing with a view to perhaps selling these as attachments.

We won't officially support replacing the LEDs (for safety reasons) but it is relatively simple. They're not soldered in.

Best regards,

Matt

Direct link | Posted on Dec 2, 2014 at 06:11 UTC
In reply to:

jhinkey: Having used industrial/scientific high speed flash lamps in the past, the questions are:
- What's the light output curve look like and how is the flash duration specified/calculated
- Does it have the ability to have a longer duration flash with more total output?
- What's the "jitter" in trigger vs. when the flash actually occurs
- What's the light spectrum - full or is more heavily in the blue

Very cool indeed if it has decent specs.

From an email to them:
The light pulse profile is close to square. At the moment we're seeing a rise time of about 200ns, but that's more than we were getting with the earlier prototypes, which means it's almost certainly down to parasitic capacitance in the wiring of the LEDs. This means we should be able to get that a lot better.
I wrote an update which includes a frequency spectrum graph here:
https://www.kickstarter.com/projects/vela/vela-one-the-worlds-first-high-speed-led-flash/posts

Direct link | Posted on Dec 2, 2014 at 06:10 UTC

Having used industrial/scientific high speed flash lamps in the past, the questions are:
- What's the light output curve look like and how is the flash duration specified/calculated
- Does it have the ability to have a longer duration flash with more total output?
- What's the "jitter" in trigger vs. when the flash actually occurs
- What's the light spectrum - full or is more heavily in the blue

Very cool indeed if it has decent specs.

Direct link | Posted on Dec 1, 2014 at 23:36 UTC as 18th comment | 2 replies
On Not dead yet: Sony announces three A-mount lenses article (123 comments in total)

I suspect that the A mount will live on for those who need the benefits of fast AF while those who don't go to the A7 series of bodies.

I would think Nikon would follow a similar route - keep DSLR bodies, especially at the high end going while they introduce mirrorless. Thus their customers can choose which works better for them. Plus these A mount lenses can be adapted successfully to the E mount.

Direct link | Posted on Nov 26, 2014 at 19:55 UTC as 26th comment
In reply to:

munro harrap: Waiting for a Nikon 36MP full-frame? Well, you might be. Suppose rumours are true that they too are working on a mirrorless theme as are Canon?
Imagine being able to have full-frame coverage using all the Nikkor lenses you cannot use on the A7 series WITH AF, and with no loss of coverage because Nikon will keep the same style and leave the space for the mirror empty (save perhaps for a removable filter to protect the sensor and the electronics as Sigma DSLRs used to have).

Daft on the face of it? Not really because as soon as you get beyond about the 35mm lens you need and then get provided with too long lenses, each of which has to compensate for the loss of the mirror box on the A7 by adding an extra bit of its own. As this applies to most lenses the kit is larger and heavier, as the sole advantage of the A7 series body is its narrowness. But that happens once only.

I pray Nikon keep the mirrorbox on theirs and then we wont have to replace all our already too expensive lenses

abortabort - very funny. Staring at a rear mounted LCD is no substitute for a good EVF.

Direct link | Posted on Nov 22, 2014 at 00:06 UTC
In reply to:

Wilight: I'm curious about the shutter sound and if this one has electronic shutter (silent) like the A7s.

It seems it's tough to dampen the sound in such a small dense body - kind of like my film cameras back in the day - a pretty loud clack. My D800 is much less noisy, but it has a much larger body with the shutter buried inside to dampen the noise.
The A7 family shutter nose is one major downside in some situations for sure - hopefully EFCS will help out a lot.

Direct link | Posted on Nov 22, 2014 at 00:05 UTC
In reply to:

Terry Breedlove: I really like the instant feed back from an EVF. Now we can have that plus focus peaking and IBIS for our legacy manual focus Glass. For me personally that means I can shoot film with my Nikon AIS glass and use the same lenses on the FF Sony. Sweet deal how can you possibly hate on that.

Impressive that the A7II has IBIS during video - that's one of the few big faults I have with my Pany GX7 - no IBIS in video, thus I have video-centric lenses that I tend to use instead.

Direct link | Posted on Nov 22, 2014 at 00:00 UTC
In reply to:

Paul Liukas: Great camera, great specifications, but lack of emotions like XT1. Camera like a brick too modern and too cold for me. If you are tired of pixel peeping like me and want to get a joy from photography, camera should be with soul :) Fuji will spoil many of us with soul and light lenses. I don't want to use D810 anymore, except for product photos (need)..

Anyway great job Sony!

As an example, my Pany GX7 is not particularly attractive to me, but I enjoy using it because the buttons are in function places, the EVF is more than good enough, the menu system seems to make sense, and it has useful features for me.

On the contrary my A7r looks pretty sexy to me (reminds me of my FE2/FM3A days), but the buttons are not in the most useful spots, the menu system is right down there in the dirt with Oly's, and the feature set/implementation is not quite there to make it enjoyable to use on a regular basis - I find I have to fight the camera to get what I want out of it. I keep it because it's small, light and is capable of excellent images.

Direct link | Posted on Nov 21, 2014 at 23:56 UTC
In reply to:

GoneMirrorless: IMHO, IBIS is more for crop cameras where focal lengths are longer. @ 24mm IS is not a big deal. @300mm it is. That's why most long zooms and many long primes already come with IS.

The OP makes no sense at all.

Direct link | Posted on Nov 21, 2014 at 23:52 UTC
In reply to:

ARB1: May be time to sell my D800 with all its lenses.

I have an A7R and D800 and it would be tough to give up the D800, but it sure would be nice to have an A7RII with 5 axis IBIS!

Direct link | Posted on Nov 21, 2014 at 20:59 UTC
In reply to:

Terry Breedlove: I really like the instant feed back from an EVF. Now we can have that plus focus peaking and IBIS for our legacy manual focus Glass. For me personally that means I can shoot film with my Nikon AIS glass and use the same lenses on the FF Sony. Sweet deal how can you possibly hate on that.

+1 Terry. EVFs have their limitations, but for what I do they work quite well. Pretty much essential for using my fast MF Nikkors.

Direct link | Posted on Nov 21, 2014 at 20:10 UTC
In reply to:

Paul Liukas: Great camera, great specifications, but lack of emotions like XT1. Camera like a brick too modern and too cold for me. If you are tired of pixel peeping like me and want to get a joy from photography, camera should be with soul :) Fuji will spoil many of us with soul and light lenses. I don't want to use D810 anymore, except for product photos (need)..

Anyway great job Sony!

Not so concerned with the aesthetics of a camera (my A7r is not very attractive to me), but rather the ergonomics and technical aspects that allow the camera to not get in the way of trying to take an image. I don't know how you define the 'soul" of a camera.

Direct link | Posted on Nov 21, 2014 at 20:08 UTC
In reply to:

jhinkey: Anticipating the A7RII sometime in the next 6 months I may have to let the A7R go now. I've taken some great shots with it, but the lack of IBIS was limiting for some of the things I do. If the A7II fixes the sensor cover issues, has a less noisy shutter I might grab that in the mean time. The A7R was an experiment for me as a companion to my D800, but has not worked out as well as I had hoped for my style of shooting.

Bring on the innovation Sony - hopefully Nikon will take notice and finally get off it's a** and get a full-frame mirrorless out the door. If they do it can't possibly be any less capable than the A7R and like have far better ergonomics.

"By Boss of Sony (6 hours ago)

There are 5 "I"s in your original comment, and another 5 "I"s in your reply. That's not counting the "me"s and "my"s. Perhaps you should focus less on yourself and more on the world."

I purposely use "I" and "me" because I am stating my preferences for a camera. Unlike many, I don't try to comment on a camera for the rest of the world. A piece of photo gear works for a person or not and everyone should put their comments in that context.

Direct link | Posted on Nov 21, 2014 at 09:25 UTC
In reply to:

jhinkey: Anticipating the A7RII sometime in the next 6 months I may have to let the A7R go now. I've taken some great shots with it, but the lack of IBIS was limiting for some of the things I do. If the A7II fixes the sensor cover issues, has a less noisy shutter I might grab that in the mean time. The A7R was an experiment for me as a companion to my D800, but has not worked out as well as I had hoped for my style of shooting.

Bring on the innovation Sony - hopefully Nikon will take notice and finally get off it's a** and get a full-frame mirrorless out the door. If they do it can't possibly be any less capable than the A7R and like have far better ergonomics.

I'd be happy if Nikon's FF mirroless has on-sensor PDAF that allows use of existing AFS lenses via an adapter with very good AF performance (and a heck of a lot more accurate for sure). Though not a sports/action shooter, I would take slightly less AF performance in return for accuracy which my D800 does not have.
I get the feeling that Sony's mirrorless is perhaps an indirect testing ground for Nikon's - i.e., see what mistakes/achievements Sony makes and then follow with the DM800 (or whatever it would be called).

Though I love my 36MP of the D800 and my A7r, I'd take a 24MP mirrorless Nikon that used the A7II sensor (assuming it doesn't have the sensor cover glass problem the A7 has).

Direct link | Posted on Nov 21, 2014 at 00:31 UTC
In reply to:

Tom Caldwell: On a somewhat less hysterical note ... ;)

The A7II does fix the stupid positioning of the shutter button and the other bogey - the controls in the ledge are gone and it is replaced by a much more user finger-friendly chamfered edge. An extra custom control might give some further configuration possibilities although the present model has plenty of buttons they are simply badly arranged.

The menu button is still a left hand operation and not so smart if the left hand just happens to be supporting a large lens at the time.

The playback button remains a long distance away from the buttons that change the magnification of the playback screen.

But overall a much more user-livable layout that goes far enough to make this body the first in the series that I could live with without complaint.

Casting about with the other hints suggested I might wonder if the A7MkII might be the cooking version and the upgrades for the A7R/S might be premium models as the "A9" with a completely new body?

As usual I'm in agreement with Tom. Some nice ergonomics changes to the A7II that hopefully will be even further carried out in the A7rII (though likely the bodies will be the same as the A7 and A7r are).

Direct link | Posted on Nov 21, 2014 at 00:26 UTC

Anticipating the A7RII sometime in the next 6 months I may have to let the A7R go now. I've taken some great shots with it, but the lack of IBIS was limiting for some of the things I do. If the A7II fixes the sensor cover issues, has a less noisy shutter I might grab that in the mean time. The A7R was an experiment for me as a companion to my D800, but has not worked out as well as I had hoped for my style of shooting.

Bring on the innovation Sony - hopefully Nikon will take notice and finally get off it's a** and get a full-frame mirrorless out the door. If they do it can't possibly be any less capable than the A7R and like have far better ergonomics.

Direct link | Posted on Nov 20, 2014 at 23:21 UTC as 93rd comment | 9 replies
In reply to:

jhinkey: The questions that I have are:
- Does it have the same sensor cover that produces reflections with bright light sources like the A7 does?
- How loud is the shutter? Both the A7 and A7r are loud
- Does IBIS work with legacy glass in both photo and video mode
- Is the water resistance improved
- Does it have an AA filter and if so how strong is it

I would consider swapping out my A7r for the A7II if it improves in these areas.
Great that Sony is iterating on their A7 lineup!

To add to my comments above - does it have a fully electronic shutter capability - that would be killer if it did.

Direct link | Posted on Nov 20, 2014 at 18:30 UTC
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