Martinka

Lives in Czech Republic Prague, Czech Republic
Has a website at www.artofsport.cz
Joined on Oct 21, 2009

Comments

Total: 144, showing: 1 – 20
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In reply to:

Martinka: Is it really necessary to have complicated twin focus motors in wideangle lens? I don't think this kind of lens is critical in focus speed and accuracy...

Maybe it's displayed in the camera screen...?

Link | Posted on May 18, 2017 at 09:54 UTC
In reply to:

Martinka: Is it really necessary to have complicated twin focus motors in wideangle lens? I don't think this kind of lens is critical in focus speed and accuracy...

Even old Canon 16-35 can focus quick and accurate without complicated twin-focus design... I'm just saying to me it's overcomplicated with bigger chance to break for no or very little advantage.

Link | Posted on May 18, 2017 at 08:41 UTC
In reply to:

Martinka: Is it really necessary to have complicated twin focus motors in wideangle lens? I don't think this kind of lens is critical in focus speed and accuracy...

Yes, I'm a sports pohotographer and still don't think focusing such a lens is a complicated thing - unlike 70-200, 200/1.8, 85/1.2 and other of my lens. Other manufacturers can do it after all...

Link | Posted on May 18, 2017 at 05:15 UTC
In reply to:

panchorancho: What's the point of going Sony FF, when lenses are the same DSLR size? What a gimmick!

Sensor quality has nothing in common with mirroless...

Link | Posted on May 17, 2017 at 20:22 UTC

Is it really necessary to have complicated twin focus motors in wideangle lens? I don't think this kind of lens is critical in focus speed and accuracy...

Link | Posted on May 17, 2017 at 20:20 UTC as 12th comment | 9 replies

I noticed one thing. In 0:35, there is visible AF hunting when focusing on the bottle. This camera is supposed to use PDAF, but hunting is typical for contrast AF. Might be because of the low light level, camera has switched to contrast AF?

Link | Posted on May 3, 2017 at 09:20 UTC as 57th comment | 2 replies
On article Serious speed: Sony a9 real world samples gallery (557 comments in total)
In reply to:

AKH: There is also a nice review here:
https://www.cameralabs.com/sony-alpha-a9-review/
Better and sharper images in my opinion.

Yes, this is much better.

Link | Posted on Apr 28, 2017 at 09:40 UTC
On article Serious speed: Sony a9 real world samples gallery (557 comments in total)

From the samples of such an advanced mirrorlesscamera aimed at profesional sports photographers one would expect:
- the right exposure, showing the advantage of electronic viewfinder
- the right moment, showing the advantage of 20 fps
- pleasant composition, getting advantage of wide spread of focusing points
- given the low-noise high ISO sensor, short enought exposure time

Instead of this we got something... hard to say what :)

Link | Posted on Apr 28, 2017 at 06:52 UTC as 59th comment | 4 replies
In reply to:

Photomonkey: " extremely low rolling shutter thanks to the incredibly fast readout speeds of the new stacked CMOS sensor."
Just how fast? As this is a camera geared to sports and wildlife photographers the 20 FPS needs to hold up to action stopping shutter speeds.

Yes, luge, but only from the start.
https://photographylife.com/sony-a9-image-samples/

Link | Posted on Apr 20, 2017 at 06:20 UTC
In reply to:

haylebob: i think Nikon have big problems at the moment and therefore no money for inventing or developing new products therefore they put new color on old products and sell them at high price level as Anniversary Items. Sad but true. i hope Nikon will come back soon.

But they don't even sell them :)

Link | Posted on Apr 3, 2017 at 07:12 UTC

200/1.8L is the best of the best :)

Link | Posted on Mar 22, 2017 at 18:45 UTC as 78th comment
In reply to:

Daniel L: Well, may be it's time to let go of my samyang 14mm 2.8... all comes down to price now.

And focusing reliability...

Link | Posted on Feb 21, 2017 at 11:55 UTC

Zoom ring in front of the barrel. Not interested, thank you.

Link | Posted on Feb 7, 2017 at 07:28 UTC as 23rd comment | 7 replies
In reply to:

Tony Northrup: This seems almost identical to the Flashpoint XPLOR 600...? Weird that they have two similar wireless monolights. Did they just decide to rebrand a different third-party light?

Btw., transmitter looks very similar to Pixel King Pro...

Link | Posted on Feb 2, 2017 at 07:14 UTC
On article Hands-on with Ricoh's compact Pentax KP (634 comments in total)
In reply to:

justmeMN: It would be interesting to see this camera next to an old Canon SL1 /100D. To my eyes, the Pentax in the photos doesn't look very compact.

http://camerasize.com/compare/#448,706

Link | Posted on Jan 26, 2017 at 07:30 UTC
In reply to:

Mister Joseph: Just swallow the SD card lol

Not all cameras use sd cards. Swallowing CF would be fun :)

Link | Posted on Dec 15, 2016 at 18:15 UTC

Need more action photos with longer focal lengths to prove AF-C capability...

Link | Posted on Dec 7, 2016 at 12:08 UTC as 72nd comment
On article Sigma 12-24mm F4 DG HSM Art Lens Review (274 comments in total)
In reply to:

maxnimo: If I needed to shoot extra wide I'd just get a prime lens that's sharper than even the Canon zoom, and at half the price of this one.

Any Canon EF 11 or 12 mm prime lens with autofocus out there?

Link | Posted on Nov 23, 2016 at 07:35 UTC

Even more expensive than Sony FE 70-200mm F2.8 GM OSS. Uff

Link | Posted on Oct 19, 2016 at 06:45 UTC as 90th comment | 5 replies
On article Winning images from Red Bull Illume 2016 (89 comments in total)
In reply to:

sh10453: I have no clue how images 7 and 10 became winners.

Haha, that's the ones I like the most :) Pure minimalism.

Link | Posted on Oct 10, 2016 at 08:02 UTC
Total: 144, showing: 1 – 20
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