igor_s

igor_s

Lives in Ukraine Ukraine
Joined on May 2, 2006

Comments

Total: 127, showing: 1 – 20
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In reply to:

Francis Carver: It would have been useful if the announcement stated whether this lens will be covering APS-C image circle and APS-C form factor sensors, or will it be covering full-frame 135 image circle and FF sensors, i.e. what the heck will it be covering in the first place?

Well, I should have said, be happy)).

Direct link | Posted on Jul 25, 2015 at 17:00 UTC
In reply to:

Francis Carver: It would have been useful if the announcement stated whether this lens will be covering APS-C image circle and APS-C form factor sensors, or will it be covering full-frame 135 image circle and FF sensors, i.e. what the heck will it be covering in the first place?

My commizerations about the US stores)). Could you order one from BHP or Adorama and return it if you would? I see, that must be too expensive:::. You won't believe but I did not pay anything for the delivery and return (yes, that is rare even here...). So buy a Zeiss, they quote all nesessary parameters. Good luck.

Direct link | Posted on Jul 24, 2015 at 19:42 UTC
In reply to:

Francis Carver: It would have been useful if the announcement stated whether this lens will be covering APS-C image circle and APS-C form factor sensors, or will it be covering full-frame 135 image circle and FF sensors, i.e. what the heck will it be covering in the first place?

I live in Ukraine, and have tested the lenses (F/1.4 and T/1.5) -one from my local store and another obtained from a Ukrainian Internet shop. Did not buy any yet, b/c did not choose my next camera. I guess if the lenses are easily available here they should be in most countries.

Concerning your question, I just defended the lens (and the company if you wish) from your inadequate in my view attacks. So much fuss for so little sense. BTW, you could ask people on this Forum to tell you the focus throw in degrees, couldn't you? But you did not do that. So I can ask you the same question in the opposite sense.

Direct link | Posted on Jul 22, 2015 at 08:42 UTC
In reply to:

Francis Carver: It would have been useful if the announcement stated whether this lens will be covering APS-C image circle and APS-C form factor sensors, or will it be covering full-frame 135 image circle and FF sensors, i.e. what the heck will it be covering in the first place?

@Francis: "they should know that themselves". What if they don't? IMO that someone does not need any Canon-mount lenses is not a subject. At most it would be enough to say that once w/o provocative "heys" and "wows". The latter is equally applicable to the focus throw in degrees that was not quoted by Samyang. [You have several ways to find it out, e.g. going to a local store]. Lassoni asked you to calm down, I agree with him. That's it. No more word from me.

Direct link | Posted on Jul 19, 2015 at 09:12 UTC
In reply to:

Francis Carver: It would have been useful if the announcement stated whether this lens will be covering APS-C image circle and APS-C form factor sensors, or will it be covering full-frame 135 image circle and FF sensors, i.e. what the heck will it be covering in the first place?

Francis, I am responding just because I am trying to stop your verbal flood. Nobody objects that the Rokinon is inferior to the Otus. Go get the Otus. Now you're saying (again many times) that you do not like Canon. Get Nikon or Sony then. May be it's time to stop flooding? DPR is a respectable site.

Direct link | Posted on Jul 18, 2015 at 10:57 UTC
In reply to:

Francis Carver: It would have been useful if the announcement stated whether this lens will be covering APS-C image circle and APS-C form factor sensors, or will it be covering full-frame 135 image circle and FF sensors, i.e. what the heck will it be covering in the first place?

Francis, do you think that anyone's interested? Good luck with any lens you want.

Direct link | Posted on Jul 17, 2015 at 20:45 UTC
In reply to:

Francis Carver: It would have been useful if the announcement stated whether this lens will be covering APS-C image circle and APS-C form factor sensors, or will it be covering full-frame 135 image circle and FF sensors, i.e. what the heck will it be covering in the first place?

@Francis
"Now then -- since I would NEVER buy a Samyang lens, a Rokinon lens, or in fact any other lens in any Canon lens mount configuration"

You may not buy any lens at all:::. Why are you making so much fuss about that?

Direct link | Posted on Jul 16, 2015 at 16:51 UTC
In reply to:

Francis Carver: It would have been useful if the announcement stated whether this lens will be covering APS-C image circle and APS-C form factor sensors, or will it be covering full-frame 135 image circle and FF sensors, i.e. what the heck will it be covering in the first place?

@Francis: you're speaking like a typical troll. Nothing personal, mate.

Direct link | Posted on Jul 9, 2015 at 17:25 UTC
In reply to:

Francis Carver: It would have been useful if the announcement stated whether this lens will be covering APS-C image circle and APS-C form factor sensors, or will it be covering full-frame 135 image circle and FF sensors, i.e. what the heck will it be covering in the first place?

Did you read the announcement any further?
"Samyang Optics 100mm T3.1 VDSLR ED UMC MACRO is a macro telephoto manual focus cine lens designed for full frame sensor sizes. "
And you can be sure that the cine lens (the photo lens being internally identical) have a fair focus throw.

Direct link | Posted on Jul 7, 2015 at 20:22 UTC
On Sony: An eye on focus article (758 comments in total)
In reply to:

ozturert: In continuous AF, the Sony is perfectly focusing on nose :) In the first video 75% of shots ended up on his nose :)
Well, it's still very impressive to autofocus with a Canon lens with a 3rd party adapter. Really impressive. Now we can use the excellent Canon glass with excellent Sony sensor using AF.

@Rishi
I think that Sony has not offered the Eye AF with third party lenses intentionally, as Sony and moreover Zeiss glass is overpriced compared to many other brands.

In fact, I (cynically) think that Sony did the leap in order to make their financical condition not that bad, and they will stop going on as soon as they decide that they are OK. That's just business.

Direct link | Posted on Jul 3, 2015 at 12:07 UTC
On Sony: An eye on focus article (758 comments in total)

Rishi: "What finally enabled the use of on-sensor phase-detect information to drive adapted DSLR lenses?"

I'd like to see what prevented from that before.

Direct link | Posted on Jul 2, 2015 at 20:12 UTC as 92nd comment
On Opinion: Did Sony just do the impossible? article (1077 comments in total)
In reply to:

The Silver Nemesis: After reading the article:
a) Sony is (definitely) good;
b) Canon is (definitely) bad;
c) Nikon is (somewhat) irrelevant (well, except for that 3D tracking that has the purpose to make Canon look even worse);
d) Ad-hoc market analysts are giving a (generous) helping hand.

If there is a way to gain brand equity (quickly), this article should be a case study in Harvard Business Review.

@Lassoni: Agree. But I would add that technically they offer a little as far as we are speaking about bodies. No top high ISO performance, no top burst or AF speed, no IBIS... Good old style for crazy money. You could attach a Leica lens to another camera and have the same IQ and optionally more.

Direct link | Posted on Jun 27, 2015 at 17:56 UTC
On Opinion: Did Sony just do the impossible? article (1077 comments in total)
In reply to:

The Silver Nemesis: After reading the article:
a) Sony is (definitely) good;
b) Canon is (definitely) bad;
c) Nikon is (somewhat) irrelevant (well, except for that 3D tracking that has the purpose to make Canon look even worse);
d) Ad-hoc market analysts are giving a (generous) helping hand.

If there is a way to gain brand equity (quickly), this article should be a case study in Harvard Business Review.

Sure Leica do not want to compete with Canon:).

Direct link | Posted on Jun 27, 2015 at 08:54 UTC
On Opinion: Did Sony just do the impossible? article (1077 comments in total)
In reply to:

The Silver Nemesis: After reading the article:
a) Sony is (definitely) good;
b) Canon is (definitely) bad;
c) Nikon is (somewhat) irrelevant (well, except for that 3D tracking that has the purpose to make Canon look even worse);
d) Ad-hoc market analysts are giving a (generous) helping hand.

If there is a way to gain brand equity (quickly), this article should be a case study in Harvard Business Review.

@The Silver Nemesis: I just said that e.g. the A7rII is more versatile than the Leicas (availability of zooms and IBIS). Leica is very good in the lens department, that's it. Their bodies are very expensive IMO without any reason except the brand name. We saw what happened to Hasselblad with a similar strategy:).

Direct link | Posted on Jun 26, 2015 at 17:58 UTC
On Opinion: Did Sony just do the impossible? article (1077 comments in total)
In reply to:

hypo: Call me old-fashioned but I can't be doing with the phrase "backside illuminated".

Try as I might it only brings up totally inappropriate imagery.

Am I the only one who has this problem?

Rather, this design is logically normal, while the old one was "backside illuminated". Let the manufacturers call it whatever they want, it's their marketing.

Direct link | Posted on Jun 26, 2015 at 16:33 UTC
On Opinion: Did Sony just do the impossible? article (1077 comments in total)
In reply to:

The Silver Nemesis: After reading the article:
a) Sony is (definitely) good;
b) Canon is (definitely) bad;
c) Nikon is (somewhat) irrelevant (well, except for that 3D tracking that has the purpose to make Canon look even worse);
d) Ad-hoc market analysts are giving a (generous) helping hand.

If there is a way to gain brand equity (quickly), this article should be a case study in Harvard Business Review.

@Zeisschen: how can be Leica superior and in the same time uncomparable like Mozart and Beethoven?

Direct link | Posted on Jun 26, 2015 at 14:56 UTC
On Opinion: Did Sony just do the impossible? article (1077 comments in total)
In reply to:

The Silver Nemesis: After reading the article:
a) Sony is (definitely) good;
b) Canon is (definitely) bad;
c) Nikon is (somewhat) irrelevant (well, except for that 3D tracking that has the purpose to make Canon look even worse);
d) Ad-hoc market analysts are giving a (generous) helping hand.

If there is a way to gain brand equity (quickly), this article should be a case study in Harvard Business Review.

@Silver Nemesis: depends on what you call "worse". With a *modern* camera you can get the same IQ as with a Leica but it offers a lot of advantages, e.g. use with zooms, faster hybrid AF and IBIS for any lens.

Direct link | Posted on Jun 26, 2015 at 13:18 UTC
On Opinion: Did Sony just do the impossible? article (1077 comments in total)
In reply to:

igor_s: I was always sure that the PDAF with third-party lenses was just a matter or marketing. Bravo to Sony for doing this as it will impact the sales of own Sony and Zeiss cameras.

The only global thing I can think of in this area is Z-shift sensor AF that would allow for AF with with fully manual lenses.

A 5 mm shift will cover the entire focusing length range of 35 mm and shorter lenses. For longer lenses, you will need roughly (and therefore quickly) set focus through the EVF or display (or distance scale) and then engage the z-shift AF. You can:
- see the whole frame all time (no magnification required)
- save time
- get reliable focus with manual lenses even if your sight is not perfect.
IMO that is a lot.

As to the camera thickness, the A-mount bodies are much thickier than E-mount ones yet they are acceptable for users. The A99 is 78 mm thick while the A7RII is 60 mm (with IBIS, w/o z-shift).

Direct link | Posted on Jun 26, 2015 at 12:42 UTC
On Opinion: Did Sony just do the impossible? article (1077 comments in total)
In reply to:

igor_s: I was always sure that the PDAF with third-party lenses was just a matter or marketing. Bravo to Sony for doing this as it will impact the sales of own Sony and Zeiss cameras.

The only global thing I can think of in this area is Z-shift sensor AF that would allow for AF with with fully manual lenses.

I was speaking about the SENSOR shift for AF with MANUAL lenses. Well, may be not over the whole range of focusing distances but after the distance had been roughly set manually. In that case, 5 mm Z-shift would be quite enough.

Direct link | Posted on Jun 24, 2015 at 10:30 UTC
On Opinion: Did Sony just do the impossible? article (1077 comments in total)
In reply to:

Average User: Size of lenses doesn't really detract from the A7 series...especially the A7r for the reason that there are high quality 1.8 primes like the F1.8 55 and the F2 28 that are quite small...admittedly the fast zooms are going to be much bigger, but with the number of pixels, zoom gets to be less important because there are sufficient pixels to crop and still get really good images.
It's also a little dumb to say that because you have to carry a big lens for a particular purpose, you should always have to carry it and you should also always have to carry a big camera body. There are things my D750 does better, but as a light versitile camera for scenery type uses night and day, the A7r has been awesome and the A7RII will be even better.

Zoom is still important. To get 2x crop, you need 4x more pixels. Moreover, for cropping you need exceptional image resolution and consequently very best lenses and not any motion blur. Bottom line: 42 Mpix, 36 Mpix or 50 Mpix are roughly the same.

Direct link | Posted on Jun 23, 2015 at 19:22 UTC
Total: 127, showing: 1 – 20
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