PIX 2015
Lee Jay

Lee Jay

Lives in United States CO, United States
Works as a Electrical Engineer / Wind Energy Research
Joined on Oct 17, 2003

Comments

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On The new Canon 35L II will be a thing of beauty article (220 comments in total)

I've had the original for a while, and it's so outstanding optically that I never stopped it down for anything but DOF. I could find the known optical issues (CA, flare), but in practical shooting it is just so remarkably good that there was really nothing I wanted for in terms of optics, build, or AF performance.

The new one looks to be a substantial step up, starting from near perfection. I don't know where that takes you. Perhaps from the 5D on which I used mine to the 5Ds.

That said, I'm selling mine but not for the new one. I've basically just moved from full-frame and half-and-half primes and zooms to crop and all zoom, strange as that might seem. And even stranger, my low-light capabilities will actually improve across the board!

Direct link | Posted on Aug 28, 2015 at 19:18 UTC as 44th comment

I must be doing the math wrong.

75db/6 = 12.5 stops

2^12.5 = 5,793

5,793 * 100 = ISO 579,300

Where did I go wrong?

Direct link | Posted on Jul 30, 2015 at 15:02 UTC as 59th comment | 1 reply
In reply to:

Lee Jay: According to the specs, there are no slow motion modes beyond 120fps.

http://www.dpreview.com/products/sony/compacts/sony_dscrx100m4/specifications

I know...my point was to encourage DPReview to put an important feature like this one in the specs.

Direct link | Posted on Jul 9, 2015 at 15:58 UTC

According to the specs, there are no slow motion modes beyond 120fps.

http://www.dpreview.com/products/sony/compacts/sony_dscrx100m4/specifications

Direct link | Posted on Jul 9, 2015 at 13:38 UTC as 6th comment | 3 replies
On Canon PowerShot G3 X: What you need to know article (599 comments in total)

I think I might consider it if it were half the price of a used FZ1000 (which is about $650 or so). The FZ1000 is the only fixed-lens camera that's interesting to me right now. It's the right balance of focal length and aperture for me, and it has 4k (good for stabilizing video down to FHD) and a viewfinder. As much as I hate EVFs, they're okay for video and way better than an LCD.

Direct link | Posted on Jun 24, 2015 at 19:09 UTC as 20th comment

The attraction of a wide angle macro lens escapes me. Every time I've ever wanted to do macro, I wanted longer focal lengths than practically any macro lens ever made.

So, I use my Kenko extension tube set with my 70-200. Even that doesn't really have enough working distance. Now, with a teleconverter and a crop body, then it feels about right.

So, my main macro lens has an equivalent focal length of 448mm.

Direct link | Posted on Jun 23, 2015 at 22:22 UTC as 42nd comment | 4 replies
On Opinion: Did Sony just do the impossible? article (1085 comments in total)
In reply to:

Lee Jay: No AA filter = no sale.
No OVF = no sale.
I suspect I'll never own a Sony camera since they'll never produce something I'd buy.

None of that is true. The EV 1 shot above is f/1.4, ISO 3200, 1/30th. That's EV 1. The framed shot of M13 with 2 minute exposure was taken in my back yard in a white zone. ISO 3200, f/15, 120 seconds is, I believe, about EV -4. And I've done darker than that (EV -6 is the darkest I've ever framed through the OVF).

Direct link | Posted on Jun 23, 2015 at 15:57 UTC
On Opinion: Did Sony just do the impossible? article (1085 comments in total)
In reply to:

Lee Jay: No AA filter = no sale.
No OVF = no sale.
I suspect I'll never own a Sony camera since they'll never produce something I'd buy.

No, all of that is false. I frame moving subjects in EV's below 0 regularly with an OVF, and I've done down to EV -6 with a crop-sensor OVF on stationary subjects without any chimping. Every try to chimp on a 2 minute exposure?

You're saying a shot like this one (which is routine) is impossible because it was taken at EV1. Don't be silly. I have thousands of properly-framed shots below EV5 taken with SLRs.

http://tinyurl.com/ps7xd9c

Direct link | Posted on Jun 23, 2015 at 14:10 UTC
On Opinion: Did Sony just do the impossible? article (1085 comments in total)
In reply to:

Lee Jay: No AA filter = no sale.
No OVF = no sale.
I suspect I'll never own a Sony camera since they'll never produce something I'd buy.

Oh, baloney. I've used OVFs in EV -5 conditions!

EVFs are the problem in low-light because they ruin the dark adaptation of your eyes.

Direct link | Posted on Jun 23, 2015 at 13:19 UTC
On Opinion: Did Sony just do the impossible? article (1085 comments in total)
In reply to:

Lee Jay: No AA filter = no sale.
No OVF = no sale.
I suspect I'll never own a Sony camera since they'll never produce something I'd buy.

"The EVF is the next step in the evolution of the camera."

EVFs are older than SLRs.

Direct link | Posted on Jun 23, 2015 at 12:39 UTC
On Opinion: Did Sony just do the impossible? article (1085 comments in total)
In reply to:

Lee Jay: No AA filter = no sale.
No OVF = no sale.
I suspect I'll never own a Sony camera since they'll never produce something I'd buy.

"30 stops may be a bit much, as you really only probably need to simulate/match instantaneous DR perceived, which is more modest."

But you need to do it over a huge range of scene conditions (say, EV15 to EV-5). And you want, say, 10 stops of DR at every step in that range. That's 30 stops.

Direct link | Posted on Jun 23, 2015 at 12:39 UTC
On Opinion: Did Sony just do the impossible? article (1085 comments in total)
In reply to:

StevenE: No AA filter? great, moire and aliasing again.

It's funny that someone would bring up math to explain why you'd want to eliminate the AA filter. Sampling theory says you have to have one to get good reconstruction of the original signal (look up Shannon).

"the theorem only applies to a class of mathematical functions having a Fourier transform that is zero outside of a finite region of frequencies"

Let's see...how do you get your subject to have that property?...

"The theorem introduces the concept of a sample rate that is sufficient for perfect fidelity for the class of functions that are bandlimited to a given bandwidth, such that no actual information is lost in the sampling process."

https://en.m.wikipedia.org/wiki/Nyquist%E2%80%93Shannon_sampling_theorem

Direct link | Posted on Jun 23, 2015 at 11:29 UTC
On Opinion: Did Sony just do the impossible? article (1085 comments in total)
In reply to:

StevenE: No AA filter? great, moire and aliasing again.

You don't need regular repeating patterns for aliasing. Any edge or linear element will have jaggies. And people often wear cloth that does have regular repeating patterns anyway. I've seen it on cameras that do have AA filters. Cameras without them just do it worse.

Direct link | Posted on Jun 23, 2015 at 03:13 UTC
On Opinion: Did Sony just do the impossible? article (1085 comments in total)
In reply to:

StevenE: No AA filter? great, moire and aliasing again.

Why wouldn't there be high frequency detail in the in-focus sections of shallow DOF images? Answer: There would, of course. And shooting fast apertures doesn't always mean shallow DOF anyway. Further, you might need fastwr than f/16 to freeze subject motion even in good light. Finally, there's literally no good reason to include an expensive AA filter and then cancel it out with another one. The additional detail is miniscule but the artifacts are everywhere. It's not just moire. It's jaggies and other signs of aliasing too. Images look "crunchy" because of those artifacts.

Direct link | Posted on Jun 23, 2015 at 02:37 UTC
On Opinion: Did Sony just do the impossible? article (1085 comments in total)
In reply to:

salamander1: "One of the major points of that entire section was to dissuade users from ever moving AF points manually."

real photographers want to choose their own focal point for various reasons, which is one of the most important things in photography i dare say. there is nothing like putting your square on your subjects eye, not the forehead, not the nose, and not the eyelashes, and taking that sublime and masterful shot of exquisite beauty and excellence. canon pro bodies can do this very well, real quick and easy, thank you very much. :)

I'm not having good luck videoing the inside of my OVF. Try AF settings 0,1,2, in that order.

Maybe it's because of lighting or the fact that my son has a real eye, not a fake one.

Direct link | Posted on Jun 22, 2015 at 22:59 UTC
On Opinion: Did Sony just do the impossible? article (1085 comments in total)
In reply to:

Lee Jay: No AA filter = no sale.
No OVF = no sale.
I suspect I'll never own a Sony camera since they'll never produce something I'd buy.

The biggest problem is that the displays themselves don't have close to enough dynamic range.

I've visually framed in full sunlight and M13 through f/15 optics (final exposure was two minutes but I could see the object clearly) with my OVF. No microdisplay has anywhere close to the nearly 30 stops of global DR you'd need to do that in a way that isn't dark in sunlight or ruining your eye's dark adaptation in the dark.

Direct link | Posted on Jun 22, 2015 at 22:55 UTC
On Opinion: Did Sony just do the impossible? article (1085 comments in total)
In reply to:

Lee Jay: No AA filter = no sale.
No OVF = no sale.
I suspect I'll never own a Sony camera since they'll never produce something I'd buy.

John is wrong if he said that. At least half a gigapixel. Heck, I shoot all the time with a pixel-sharp lens at 205MP equivalent.

But even so, 150MP is more than 42MP.

Direct link | Posted on Jun 22, 2015 at 22:46 UTC
On Opinion: Did Sony just do the impossible? article (1085 comments in total)
In reply to:

Lee Jay: No AA filter = no sale.
No OVF = no sale.
I suspect I'll never own a Sony camera since they'll never produce something I'd buy.

Exactly right.

http://tinyurl.com/qhjjjtt

Direct link | Posted on Jun 22, 2015 at 22:41 UTC
On Opinion: Did Sony just do the impossible? article (1085 comments in total)
In reply to:

salamander1: "One of the major points of that entire section was to dissuade users from ever moving AF points manually."

real photographers want to choose their own focal point for various reasons, which is one of the most important things in photography i dare say. there is nothing like putting your square on your subjects eye, not the forehead, not the nose, and not the eyelashes, and taking that sublime and masterful shot of exquisite beauty and excellence. canon pro bodies can do this very well, real quick and easy, thank you very much. :)

How would I video the inside of an OVF?

Direct link | Posted on Jun 22, 2015 at 22:18 UTC
On Opinion: Did Sony just do the impossible? article (1085 comments in total)
In reply to:

Lee Jay: No AA filter = no sale.
No OVF = no sale.
I suspect I'll never own a Sony camera since they'll never produce something I'd buy.

Yes, I've said it before, but I'd take a T6s over this camera, at the same price. And AA filters are so important that I wouldn't buy a camera without one unless it were in the gigapixel range.

Direct link | Posted on Jun 22, 2015 at 22:18 UTC
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