Pat Cullinan Jr

Pat Cullinan Jr

Lives in United States United States
Joined on Sep 21, 2010

Comments

Total: 1020, showing: 61 – 80
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Leitz is flailing. They'll be drowning by and by. Asia has won, and I say well and good.

Link | Posted on Oct 13, 2016 at 14:09 UTC as 56th comment | 3 replies
In reply to:

eazizisaid: I love it

I hate it with every fiber of my being. And my being has A LOT of fibers -- 250 lb of them.

Link | Posted on Oct 13, 2016 at 14:06 UTC
On article Fast and light: Nikkor 24mm F1.8G ED lens review (158 comments in total)
In reply to:

Pat Cullinan Jr: "If you're an APS-C shooter the 36mm equivalent focal length with an equivalent aperture of F2.7."

Folks, you're buying a lens having a fast aperture of f/1.8.

But the thing is that although the LF is getting more light, that light must serve a bigger expanse. It cancels out. That's why the f-number of the LF lens remains 5.6.

If the Rodenstock had F0.65, you could shoot with existing light in a coal mine. At midnight, even.

P.S. Your definition of exposure is correct.

Link | Posted on Oct 12, 2016 at 18:24 UTC
On article Fast and light: Nikkor 24mm F1.8G ED lens review (158 comments in total)
In reply to:

Pat Cullinan Jr: "If you're an APS-C shooter the 36mm equivalent focal length with an equivalent aperture of F2.7."

Folks, you're buying a lens having a fast aperture of f/1.8.

How do you answer this?

Let's calculate the crop factor of the 5x7 format.

The definition of crop factor is the ratio of a 35 mm frame's diagonal (43.3 mm) to the diagonal of the image-forming region in question.

Now, 5x7 in = 125 X 176 mm. The diagonal = SQRT(123^2+176^2) = 214.72 mm.

So the crop factor = 43.3 / 214.72 = 0.20, to the second decimal place.

Now let's put a Rodenstock APO-Sironar S 240mm f/5.6 lens on a 5x7 camera (which, as we have seen, has a crop factor of 0.2). Then by the principle put forward by people here, such a lens would have an aperture of 5.6 x 0.2 = 1.12. This is not possible.

Link | Posted on Oct 11, 2016 at 06:17 UTC
On article Fast and light: Nikkor 24mm F1.8G ED lens review (158 comments in total)
In reply to:

Pat Cullinan Jr: "If you're an APS-C shooter the 36mm equivalent focal length with an equivalent aperture of F2.7."

Folks, you're buying a lens having a fast aperture of f/1.8.

>the same ISO numbers on different formats produce different results. They are basically lying to you.

Does mean that Fujifilm, Olympus, Nikon, Canon, Ricoh, Pentax, Sony, Panasonic, Leitz, Samsung, Zeiss, Samyang, Sigma, and Toshiba have, for many years, either been gravely mistaken about the properties of their products, or else have been carrying out, IN CONCERT, a project of gross deception? Or that Schneider-Kreutznach, Rodenstock, Voigtlaender, Alpa, Linhof, Panavision, Arri, Bolex, Kodak, Tokina, IMAX, Angenieux, Argus, Rollei, Gowland, Hartblei, Hasselblad, Mamiya, Yashica, Plaubel, Cooke, Steinheil, Zoomar, Bronica, Bell and Howell, Graflex, Minolta, Miranda, Topcon, Horseman, Sinar, Ernemann, Praktika, Exakta, Minox, Calumet, Goerz, Petzval, Beaulieu, Agfa, Cambo, Konica, Celestron, Questar, Swarovski Optik, Bushnell -- have all been gravely in error or have been cheating photographers for decades, or even for generations?

Link | Posted on Oct 11, 2016 at 06:08 UTC
On article Fast and light: Nikkor 24mm F1.8G ED lens review (158 comments in total)
In reply to:

Pat Cullinan Jr: "If you're an APS-C shooter the 36mm equivalent focal length with an equivalent aperture of F2.7."

Folks, you're buying a lens having a fast aperture of f/1.8.

I don't mean exposure settings. I mean exposure. What is your definition of exposure?

Link | Posted on Oct 11, 2016 at 06:05 UTC
On article Fast and light: Nikkor 24mm F1.8G ED lens review (158 comments in total)
In reply to:

Pat Cullinan Jr: "If you're an APS-C shooter the 36mm equivalent focal length with an equivalent aperture of F2.7."

Folks, you're buying a lens having a fast aperture of f/1.8.

What, then, is your definition of exposure?

Link | Posted on Oct 9, 2016 at 03:27 UTC
On article Fast and light: Nikkor 24mm F1.8G ED lens review (158 comments in total)
In reply to:

klavrack: I like the sound of everything about it except for it not being stabilized. I don't want to drag around heavy zooms in order to get great IQ and VR at the same time.

I hope that cough doesn't spread to other posters, Miles. I recommend that you cough into the crook of your elbow, as recommended by the federal government.

Link | Posted on Oct 8, 2016 at 05:58 UTC
On article Fast and light: Nikkor 24mm F1.8G ED lens review (158 comments in total)
In reply to:

Pat Cullinan Jr: "If you're an APS-C shooter the 36mm equivalent focal length with an equivalent aperture of F2.7."

Folks, you're buying a lens having a fast aperture of f/1.8.

Can people see how the "equivalence" fallacies propagated on this website are poisoning people's minds against certain optical products? What would the manufacturers think about this? Doesn't DPR have a professional reputation to uphold, and don't these erroneous opinions undermine that reputation?

Link | Posted on Oct 8, 2016 at 05:49 UTC
On article Fast and light: Nikkor 24mm F1.8G ED lens review (158 comments in total)
In reply to:

munro harrap: So no advantage then over an old 24mm f2.8 A.I.S? Or the 24-85VR? which also improves as you stop down at 24mm, but is still pretty sharp at f3.5. Bit of a shock to discover that even a 35mm sized sensor is way too difficult , WITH A MIRROR THERE, to be really crisp. Not as good as the 24mm f1.8 on my LG G4, what a shame!! The lens on the LG G4, and the V10 is sharp edge to edge and corner to corner at f1.8, despite the problems of miniaturization with optical stabilization, and the lens on the Pureview 808 Nokia IS as sharp, but hey its only 26MP, albeit on a 38mm sensor!! Yes, folks, it really is sharp, edge to edge and corner to corner, but there's no mirror in the way. Now, all they have to do is to scale it all up to 35mm size, and there you go, problem solved, OIS, sharp wide open, no vibration as no mirror slap, and much less noise, and if anybody else claims 1.8 = 2.7 on APS-C I'll scream. This relates not to aperture, but ONLY to relative depth of field.

"if anybody else claims 1.8 = 2.7 on APS-C I'll scream."

I'M SCREAMING!!

See my remarks following this.

Link | Posted on Oct 8, 2016 at 05:39 UTC
On article Fast and light: Nikkor 24mm F1.8G ED lens review (158 comments in total)
In reply to:

Pat Cullinan Jr: "If you're an APS-C shooter the 36mm equivalent focal length with an equivalent aperture of F2.7."

Folks, you're buying a lens having a fast aperture of f/1.8.

"comparable to a FF 36mm F2.7"

Comparable only AS REGARDS DOF.

As regards EXPOSURE, the lens is F/1.8.

Link | Posted on Oct 8, 2016 at 05:36 UTC
On article Fast and light: Nikkor 24mm F1.8G ED lens review (158 comments in total)

"If you're an APS-C shooter the 36mm equivalent focal length with an equivalent aperture of F2.7."

Folks, you're buying a lens having a fast aperture of f/1.8.

Link | Posted on Oct 7, 2016 at 05:57 UTC as 19th comment | 20 replies
In reply to:

steelhead3: Is the price 3300 or 2600? unclear but Sony uses price to tamp down demand

I allow's how they're just passing the time of say.

I gotta say, it's one beautiful lens.

Link | Posted on Oct 7, 2016 at 00:19 UTC
On article 2016 Roundups: Fixed Prime Lens Cameras (186 comments in total)
In reply to:

Pat Cullinan Jr: I get it. These are FIXED-fixed-lens cameras.

"someone glued both the zoom ring AND the bayonet shut"

Admirably put!

Link | Posted on Oct 7, 2016 at 00:16 UTC
On article Going wide: Irix 15mm F2.4 sample gallery (108 comments in total)
In reply to:

Mast3rChi3f: This lens has a serious problem.

https://www.youtube.com/watch?v=Xy85wPyK1O8

https://www.youtube.com/watch?v=0kd4lksGOiE

Mine is not working on the 5D3, and on the 6D there is a delay closing the diaphragm. At least 4/5 people have confirmed the same problem. Irix is workin on a solution.

@Barney Britton, "You were saying, Pat?"

Ha ha, double fooey with a prune on top.

Link | Posted on Oct 7, 2016 at 00:12 UTC
On article Going wide: Irix 15mm F2.4 sample gallery (108 comments in total)
In reply to:

Mast3rChi3f: This lens has a serious problem.

https://www.youtube.com/watch?v=Xy85wPyK1O8

https://www.youtube.com/watch?v=0kd4lksGOiE

Mine is not working on the 5D3, and on the 6D there is a delay closing the diaphragm. At least 4/5 people have confirmed the same problem. Irix is workin on a solution.

"Irix is workin on a solution."

Fooey.

Link | Posted on Oct 3, 2016 at 15:34 UTC
On article iPhone 7 Plus real-world sample gallery (262 comments in total)

These photos are outstanding in composition and beauty, in the tradition of Phil Askey. At the same time, they serve well to afford a basis for judgment regarding technical quality, again in the tradition of the same Phil Askey. Lars has got THE EYE.

Hat tip to Lars!

Link | Posted on Oct 1, 2016 at 11:46 UTC as 28th comment
On article iPhone 7 Plus real-world sample gallery (262 comments in total)
In reply to:

garyknrd: Personally I buy a cheap smart phone to use as a phone, scheduler, quick e-mail check, food pics etc. The money I save I buy a camera for my photos.

No.

Link | Posted on Oct 1, 2016 at 11:29 UTC
On article Nikon 105mm F1.4E ED sample images (279 comments in total)
In reply to:

HowaboutRAW: How about some dark interiors with challenging lighting using ISOs above say 3200 with the D750.

So yes, this lens looks amazing in daylight.

I still prefer stuffed animals. Like the blue whale hanging off the ceiling. :)
I gave youse Likes.

Link | Posted on Oct 1, 2016 at 09:35 UTC
On article Nikon 105mm F1.4E ED sample images (279 comments in total)
In reply to:

Emadn13: f1.4 sample portraits are too shallow in my opinion,with this price range a 135mm f1.8 would be better reasonable shallow depth with same bokeh
but this lens is so good for low light,you could take some lowlight shots

Oh. Thanks. I don't feel THAT dumb now.

Link | Posted on Sep 30, 2016 at 01:50 UTC
Total: 1020, showing: 61 – 80
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