Rooru S

Rooru S

Lives in Panama Panama City, Panama
Works as a Aircraft Mechanic/Pilot
Joined on Oct 5, 2010

Comments

Total: 536, showing: 1 – 20
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On Sony: An eye on focus article (612 comments in total)
In reply to:

Rooru S: Rishi, you totally neglected the fact that E-mount cameras aren't compatible with A-mount teleconverters when using G-series lenses (top of the Sony lineup) and LA-EA adapters.

what I'm trying to do is increase awareness of something that Sony is wrongdoing. They're promoting cameras that they say, can replace a DSLR or SLT (see Sony Australia mirrorless website) yet it can't do everything DSLRs and SLT already does. Meanwhile, Sony A-mount users are being neglected with no replacement for the a99.

Sony must either bring a fix to allow the usage of Sony TCs on LA-EA adapters and E-mount cameras with AF and aperture control (and all the bells and whistles of current A-mount cameras with features like AF-D Range) or bring a new set of Fullframe A-mount cameras equivalent to a7 series but with more fps in AF-C and all the features E-mount cameras don't have yet but that we can find on A-mount cameras and lenses.

Direct link | Posted on Jul 3, 2015 at 12:52 UTC
In reply to:

Rooru S: the Nikkor 500mm F4 is still cheaper than Sony 500mm F4. Sony must lower their prices!

@falconeyes
the 500/4 for A-mount was released in 2012 after almost 5 years of teasing and development. E-mount didn't take that long to develop. I think it took only a year. At the time, Sony was pushing A-mount heavily.

Direct link | Posted on Jul 2, 2015 at 15:19 UTC
On Sony: An eye on focus article (612 comments in total)
In reply to:

Rooru S: Rishi, you totally neglected the fact that E-mount cameras aren't compatible with A-mount teleconverters when using G-series lenses (top of the Sony lineup) and LA-EA adapters.

@steelhead3:

Sony likes to advertise E-mount cameras as the replacement for A-mount and DSLR cameras. But what they don't tell you is that there are several features that DSLRs/SLT have and that mirrorless for some reason don't have. So are those mirrorless truly DSLRs replacements or not? If they're not going to give us more A-mount cameras, I wouldn't mind if they gave us all the features package on their E-mount cameras, but they don't.

@abortabort:
have you used E-mount cameras with Sony TCs? I bet you don't.

Direct link | Posted on Jul 2, 2015 at 14:05 UTC
On Sony: An eye on focus article (612 comments in total)
In reply to:

ChrisH37: The native Eye tracking video is extremely impressive.

One of the big unanswered issues is what exactly is the situation with all that lovely screw mount Alpha glass? The 135mm 1.8 would be an amazing companion to the A7RII, but as far as I'm aware you would have to use the LA-EA4, which defeats the point somewhat.

The current 35/1.4ZA for FE is almost as big as the A-mount 135/1.8ZA

I can't imagine how big that lens would be in E-mount...

Direct link | Posted on Jul 2, 2015 at 13:58 UTC
On Sony: An eye on focus article (612 comments in total)
In reply to:

J A C S: How does this work in low light? What I see there is ISO 100, f/125, f/1.4. What about light requiring ISO 3200, 1/50, wide open, for example?

I'm quite sure he/she is asking that because all current mirrorless cameras with PDAFOS perform quite bad in low light compared to DSLRs, this happens with the a6000 and a7II. It seems the PDAF points can't work in low light because those points are smaller than those found in dedicated AF modules.

It is not bitching.

Direct link | Posted on Jul 2, 2015 at 13:56 UTC
On Sony: An eye on focus article (612 comments in total)

Rishi, you totally neglected the fact that E-mount cameras aren't compatible with A-mount teleconverters when using G-series lenses (top of the Sony lineup) and LA-EA adapters.

Direct link | Posted on Jul 2, 2015 at 13:38 UTC as 121st comment | 6 replies

the Nikkor 500mm F4 is still cheaper than Sony 500mm F4. Sony must lower their prices!

Direct link | Posted on Jul 2, 2015 at 11:03 UTC as 22nd comment | 3 replies

DPR team, did you ask him about the issue with G-series A-mount lenses + Sony Teleconverters when used together with LA-EA adapters on E-mount cameras?

Direct link | Posted on Jun 24, 2015 at 00:57 UTC as 18th comment
In reply to:

Rooru S: Hey DPR team, you know what you should do? A versus match between the best focusing mirrorless against the best focusing DSLRs.

The test should include the following. Tracking in the Z-axis (subject coming towards you). X-axis (panning) and low light focusing (night and indoors)

The lens of choice should be simple. If you're comparing A6000 with A77M2, you should use the SAL70200G2 in the A77M2 and the SEL70200G in the A6000. Or A7RM2 against D810 with similar lenses (native lenses only).

@brownie314:
But by how much will DSLR outperform mirrorless? What about recent releases (NX1, A6000, A7Rm2)? How good are they compared to DSLRs at the same price point? Have mirrorless closed the gap?

But it seems you prefer to leave those questions unanswered. That's why I said DPR should do a test comparing mirrorless and DSLRs in a real world environment with some targets moving at the same/similar speeds and in the same direction several times to see how good each camera performs.

Direct link | Posted on Jun 24, 2015 at 00:49 UTC
In reply to:

Rooru S: Hey DPR team, you know what you should do? A versus match between the best focusing mirrorless against the best focusing DSLRs.

The test should include the following. Tracking in the Z-axis (subject coming towards you). X-axis (panning) and low light focusing (night and indoors)

The lens of choice should be simple. If you're comparing A6000 with A77M2, you should use the SAL70200G2 in the A77M2 and the SEL70200G in the A6000. Or A7RM2 against D810 with similar lenses (native lenses only).

@brownie314:
Right, because we can't see how mirrorless tech has caught so far with DSLRs or how much DSLRs still has the edge when it comes to sports photography... Way to go.

Direct link | Posted on Jun 21, 2015 at 20:37 UTC
In reply to:

BobYIL: Why Mirrorless? In very dark situations, looking through the viewfinder of an A6000 set to ISO 6400 is something you will never experience with the optical rangefinder of a Leica or viewfinder of a Nikon with prism, including the digital ones. (From someone who have been using both since more than 50 years)

True, but sometimes the viewfinder gets too much lag. (And at 6400 I see too much noise and the viewfinder gets slow refresh that if you're focusing manually, it's very hard to nail fine focus)

Direct link | Posted on Jun 20, 2015 at 00:42 UTC

Hey DPR team, you know what you should do? A versus match between the best focusing mirrorless against the best focusing DSLRs.

The test should include the following. Tracking in the Z-axis (subject coming towards you). X-axis (panning) and low light focusing (night and indoors)

The lens of choice should be simple. If you're comparing A6000 with A77M2, you should use the SAL70200G2 in the A77M2 and the SEL70200G in the A6000. Or A7RM2 against D810 with similar lenses (native lenses only).

Direct link | Posted on Jun 20, 2015 at 00:38 UTC as 95th comment | 8 replies

To all those people asking for E-mount version, just get an adapter. This is a DSLR lens design.

Direct link | Posted on Jun 20, 2015 at 00:31 UTC as 37th comment | 2 replies
In reply to:

Just a Photographer: I had expected this lens to made available to the Sony E-mount too.
No - Instead Sigma opts for futureless camerasystems... ;)

(Don't take that too seriously, but you get what I mean.
If you still feel attacked or offended, then its you who should ask the question why you feel offended....)

Have you seen the size of that thing? How would this lens be great for E-mount with this size?

Direct link | Posted on Jun 20, 2015 at 00:30 UTC
In reply to:

wootpile: This is the lens I want for Sony E-mount. I wouldn't care if it broke the bank. awesome FF range and very useful for street on aps-c.
PLEASE Sigma!!!

Get an adapter.

Direct link | Posted on Jun 20, 2015 at 00:28 UTC
In reply to:

sportyaccordy: FE MOUNT PLEASE!!!!!

Then get an adapter.
EDIT: If they change mount and connections, you would still end up with slow AF unless they change the AF motors optimized for DSLR focusing and that's an extra cost for Sigma (time and money to research and test Stepping motors in a DSLR-designed lens), and they don't want to do that.

Now, if you have intentions to use it on a A7RM2, then the suggestion will stay up. Get an adapter.

Direct link | Posted on Jun 20, 2015 at 00:25 UTC
In reply to:

Zoron: DSLR's Golden Age has peaked sometime ago....it's been downhill since then....Sigma might as well profit as much as possible from this format while it still worth doing....hence this lens.....

Maybe it's downhill in sales number, but you shouldn't forget about the number of existing customers around the world, and in the U.S. mirrorless are still a long way from taking over DSLRs..

Direct link | Posted on Jun 20, 2015 at 00:22 UTC
In reply to:

Tonkotsu Ramen: would have preferred 24-50..

The 24-35/2 is heavier than a 24-70/2.8 yet here you're asking for a 24-50. It is not assumptions. It is a fact.

Direct link | Posted on Jun 20, 2015 at 00:21 UTC
In reply to:

22codfish: Sigma refused my request for a 150-600 mm lens mount conversion to a Pentax Ka mount.

How about a Pentax Ka lens mount conversion for this lens?

The main requirements for mount conversion is:
1. It must be a recent lens from the Global Vision lineup
2. The conversion will only be performed in the mounts available at launch. So if your lens is in Canon EF mount, and the lens was launched only for EF, F or SA, you can only request conversion to any of those.

Direct link | Posted on Jun 20, 2015 at 00:19 UTC
In reply to:

lcf80: Dear Sigma, when we'll see Art 85mm F/1.4? Just don't forget about weather-sealing and FE mount support - it would fit A7R II perfectly :).

But it is some extra cost for Sigma, and they're only producing most of their lenses in Canon and Nikon mount to decrease extra cost. So at the moment, better get your adapter ready for the A7Rm2 because Sigma isn't going to get into more expenses just to offer an extended barrel when it can be up to the customer to add the metabones or chinese EF-E adapter.

Direct link | Posted on Jun 20, 2015 at 00:14 UTC
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