ZeevK

ZeevK

Lives in Israel Gan-Yavne, Israel
Works as a R&D Systems Engineer & Integration Manager
Joined on Apr 23, 2005

Comments

Total: 39, showing: 1 – 20
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In reply to:

naththo: You need to watch out for vignetting at lower f stops like around F1.8 or F2 or F2.8 or so. That is very good lens I must say, very high level of sharpness but distortion is fairly significant that may be common through Sony lens even incorporated with Zeiss glass. I found that Sigma lens has a lot less distortion when combined with Nex 7 to compare to Sony fixed focal lens. Sony need to improve in manufacture over lens to have less distortion and vignetting that would be nice if they do so.

@naththo: "Sony need to improve in manufacture over lens to have less distortion and vignetting that would be nice if they do so."

Sorry, I don't know where did you get this... Distortion and vignetting has nothing to do with "manufacture" - these are pure design compromises / tradeoffs / limitation, generally unaffected by production variation.

Direct link | Posted on Feb 1, 2014 at 20:55 UTC
On Sony Alpha A7 / A7R preview (2381 comments in total)
In reply to:

tommy leong: Very good review.

Made me re-think about my initial euphoria.

1) shutter too loud for my street/wedding photography

2) lack of bright lens native to its mount.

3) "I still don't quite understand constraining themselves with such a small mount that designing bright lenses might be difficult, just for the sake of maintaining compatibility with NEX lenses, but I can't argue with the results so far. "

sounds like 35mm f1.4 and the likes will not be coming anytime soon.

@Nerval: eventually it all about performance vs price. Give this format alittle time and you will have quite a selection to choose from. like for the 30mm range for APS-C E-mount:
SIGMA 30mm f/2.8 DN - 200$
SONY 35mm f/1.8 OSS Alpha - 450$
ZEISS Touit 32mm f/1.8 (MF) - 720$
SONY ZEISS Sonnar T* FE 35mm f/2.8 ZA - 800$

And a general note about prices - Sony A7/7R is a new system with new, modern lenses designed to provide resolution that matches the latest sensors. Comparing these lenses to to old / existing DSLR lenses is not apples-to-apples. But each time a new generation of high-end DSLR lenses is introduced by Canon and Nikon the prices are much higher... Nikon latest 58/1.4 for 1700$ is a good example of things to come...

Direct link | Posted on Nov 20, 2013 at 06:28 UTC
On Sony Alpha A7 / A7R preview (2381 comments in total)
In reply to:

tommy leong: Very good review.

Made me re-think about my initial euphoria.

1) shutter too loud for my street/wedding photography

2) lack of bright lens native to its mount.

3) "I still don't quite understand constraining themselves with such a small mount that designing bright lenses might be difficult, just for the sake of maintaining compatibility with NEX lenses, but I can't argue with the results so far. "

sounds like 35mm f1.4 and the likes will not be coming anytime soon.

"small mount that designing bright lenses might be difficult"...

This is definetly not true! The E mount is almost 100% compatible to Nikon F mount. There is only a small difference (intentional?) that does not allow direct mount of F lens into E mount but otherwise it is almost the same. I have a F to E adapter and I was able to insert an E lens into F mount).

The size of E mount is not a limiting factor but Sony's decision not to go for extreme fast lenses but rather have modest maximum aperture with resolution able to resolve the 36MPx sensor.

Look what is the price of last generation of top-performance 50/1.4 lenses from Nikon and Zeiss. I definitely prefer a more reasonably priced 50/1.8 or even 50/2 that lacks the extra stop but gives a considerable gain in resolution wide open and all over the frame.

Direct link | Posted on Nov 19, 2013 at 10:06 UTC
On Retro Nikon 'DF' emerges from the shadows news story (1513 comments in total)
In reply to:

Vignes: The retro styling hype is more saturated now; it’s become of a ‘me to’ thing. When Olympus introduces the OMD first, that was a great marketing hype but now every other maker has followed with the recent entry like Sony A7. Sony entry is funny because they never made SLR cameras in the 60s and 70s, so there is nothing original about a retro styled Sony DSLR. But Olympus, Nikon, Canon cameras did existed then.

SONY acquired MINOLTA in 2005, so they have a heritage from Minolta innovative SLR's from the 70's-80's. A7/7r is has many common design lone with 1985"s Minolta 7000/9000 the camera that started the AF era in DSLR.

Direct link | Posted on Nov 1, 2013 at 23:14 UTC
On Samyang announces five full frame E-mount lenses news story (18 comments in total)

This makes the price of the A7 even more appealing to me... At least two of the five are very attractive to me - 14mm f/2.8 and 85mm f/1.4. If of good quality - these would be high on my list.

Direct link | Posted on Oct 16, 2013 at 18:12 UTC as 8th comment | 1 reply
On Sony introduces large-sensor 'high-zoom' Cyber-shot RX10 news story (114 comments in total)

Perfect traveling camera for me. I didn't go for the RX100 for it limited zoom and f-number at tele setting. The body looks much more ergonomic than RX100 and this 24-200/2.8 is a perfect traveler/tourist lens. I am ready to pay the price for this outfit.

Direct link | Posted on Oct 16, 2013 at 08:09 UTC as 39th comment
On Phase One makes Capture One 7.1.4 available news story (17 comments in total)

I do not understand why the need to release new s/w version each time support added for a new camera? Why not use DLL or a plug-inn? I am really glad C1 now supports "300 different camera models" 298 of which I will never need... And it's not only C1 but also all the rest...

If you have bug-fix - release it as a bug-fix, if the u/g is only support for a camera I do not use - don't bother me..

Direct link | Posted on Sep 18, 2013 at 11:22 UTC as 6th comment | 1 reply
In reply to:

Prognathous: It's sad to see how Sony ruined the best hot-shoe implementation and replaced it with this seemingly-standard-but-not-really pos.

Hmmm. While I agree that the Original Minolta hot-shoe is best implementation, I wonder what do you mean by saying the new/old Sony hot-shoe is not "standard" one?

Nikon, Canon, Pentax, Olympus... all have different layout of connection pinns and only the mechanical interface is common (standard). So how the Sony standard ISO interface is not standard?

Direct link | Posted on Jun 27, 2013 at 07:34 UTC
On Just posted: Sony Alpha NEX-6 Review news story (330 comments in total)
In reply to:

S.A.: heh so many negative comments as usual.... I've owned all Nikon and Sony. Nikon DSLRs and Sony whatevers... And this NEX 6 is the closest I've come to a do it all camera. As with all mirrorless, the autofocus leaves something to be diesired, but otherwise it's a swiss army knife of cameras. First thing I did was sell the lens. Would rather use primes and already had the 18-55.
Crying about the menus is pointless. The quick navi and the fn button take care of that. Hardly any need to go into menus. Love that I an use my triggers with the hot shoe. Love the wireless. I shoot in my little studio and just hit send to computer. Love it. WONDERFUL CAMERA!
Touchscreen lol. Use your cell phone then. No real advantage imho. Actually it seems a handicap if you ask me. Turned it off on the 5n after a few weeks. However, I can see no reason why they couldn't have included it for the gadget crowd. So ok, minus half a percentage point.

IMHO Sony made a huge mistake ommiting the touch screen from NEX-6. I personally will not upgrade to 6 or 7 till it will provide touch option. I shoot a concert holding the NEX-5n in one hand over people heads. With my thumb I was able to percisely select the focus point for each shot. I shoot macro at low level with back LCD horizontal in both Auto and Manual Focus - being able to touch the screen for Focus selection is awsome.

When I take the NEX-5 (still with me as backup) - I feel handicapped without the touch interface.

Direct link | Posted on Apr 3, 2013 at 17:48 UTC
On Just posted: Sony Alpha NEX-6 Review news story (330 comments in total)
In reply to:

EinsteinsGhost: Question:
How effective is Face Recognition feature?

It is very effective on NEX-5n. I think this is one of the most neglected features of the NEX family - and doing so is a mistake. IMHO the ability to register a face and mark it as favorite is really a cool and useful feature. I use it alot!

Direct link | Posted on Apr 3, 2013 at 17:33 UTC
On Sony releases two new apps for NEX-5R/NEX-6 owners news story (68 comments in total)
In reply to:

Paul_B Midlands UK: So glad I only have the incompatible 5N!

You are "glad" for not having an option to add functionality to your camera... hmmm

You probabely could be even more "glad" if there was no option for firmware updates also... Great logic!!!

Direct link | Posted on Mar 29, 2013 at 21:05 UTC
On Interview - Phil Molyneux, President Sony Electronics article (133 comments in total)
In reply to:

Tilted Plane: Another great interview. They're always a highlight, no matter what actually gets said. It's the source, more or less. It's up to us to read between the lines. Very welcome. Thanks!

A very predictable set of questions followed by a standard answers... Not to much of "reading between the lines" material.

I would prefer to here more "unpleasant" quuestions, that we all know are bothering current and future Sony NEX & ALPHA users.

Especially lag in firmware updates, lenses for ALPHA and NEX line...

Direct link | Posted on Oct 16, 2012 at 08:12 UTC
On Interview - Phil Molyneux, President Sony Electronics article (133 comments in total)
In reply to:

sean lancaster: "The E-mount that could do that would be a little different than the E-mount that we know today. But it is possible. Much of the lens geometry you see in the RX1 is what it would take to realize that design."
So, lenses that recess well into the body to work on a full frame sensor are what we have with the 1 lens on the RX1. If they are thinking that they can build a FF NEX, for example, and have a new line of recessed lenses, I hope they realize that building it in a way that doesn't allow legacy glass will probably kill most of the excitement people will have for this camera.

I see no contradiction between making a FF-NEX that allows "native" e-mount FF lenses like the RX1 design and usage of the legacy lenses via adapters.

The only reason to "block" usage of lecacy glass is Sony implicit decision to do so... trying to force buying into the new FF-E-mount line if and when that may happend...

Direct link | Posted on Oct 16, 2012 at 07:00 UTC
On Interview - Phil Molyneux, President Sony Electronics article (133 comments in total)
In reply to:

achim k: "We believe that a user who buys a camera with an OLED EVF is concentrating on the shooting experience and wants to have everything at their fingertips by direct button control. We believe their interest in touchscreen capability is far less than the user who shoots with the camera held at arm's length"

...yes, I agree, but nevertheless would be happy to use the dark touchscreen-display to select the AF-point while looking through the EVF!!

EVF and touchscreen is no contradiction!

Three main benefits of touch screen for me:

a. Being able to shoot while holding the camera one-hand using the thumb to select the AF point on the screen.

b. Using a quick and precise AF point selection at macro and close-focus photography, especially when shooting at waist or close to ground level with the screen at 90º.

c. When revising shots on the back-screen - the ability to directly select the point of magnification for quick and precise check of focus or facial expression of the model...

As for the contradiction between EVF and touch screen, IMHO - it's pure BS. I ordered external EVF immediately when it was available and it does not leave my NEX-5n but when I have to use external flash or microphone.

Z.K.

Direct link | Posted on Oct 16, 2012 at 06:55 UTC
On Interview - Phil Molyneux, President Sony Electronics article (133 comments in total)
In reply to:

achim k: "We believe that a user who buys a camera with an OLED EVF is concentrating on the shooting experience and wants to have everything at their fingertips by direct button control. We believe their interest in touchscreen capability is far less than the user who shoots with the camera held at arm's length"

...yes, I agree, but nevertheless would be happy to use the dark touchscreen-display to select the AF-point while looking through the EVF!!

EVF and touchscreen is no contradiction!

@ achim k

I'm 100% with you. I think Sony made a mistake with both NEX-7 and even more the NEX-6 by not providing a touch screen option.

For me the usage of touch-screen is so mandatory that it rules-out the upgrade from NEX-5n neither to7 nor to 6 level.

I was hoping / dreaming to have an upgrade pass to NEX-5n + build in EVF + NEX-7 stile tri-navi... The NEX-6 does not provide that for me. Good camera but it is somehow crippled by Sony's decisions...

So for me it's now only a question whether the NEX-5R a worthy upgrade or shall I stay with my NEX-5n till next leap in technology...

Z.K.

Direct link | Posted on Oct 16, 2012 at 06:54 UTC
In reply to:

jonikon: The worst of the lot by far is the E 16-50mm F3.5-5.6 PZ OSS, which does not even come close to doing an APS-C sensor justice. Only the very center is reasonably sharp and it quickly gets softer going out from there. I was surprised how much distortion the E 16-50mm F3.5-5.6 PZ OSS has, even at 50mm. I have pocket cameras that have better lenses than that!

Distortion? I do not see any reasonable distortion problem at any of the 16-50 samples, definitely not around the 50mm end. Look at 21 sample -there are plenty of straight lines very close to frame edge with only a minimal degree of visible distortion, IMHO indeed very low distortion regarding the type of lens we are talking about.

It looks to me that beside these samples being quite poorly shot, mot people are just carried away with the flood of negativity....

Direct link | Posted on Oct 13, 2012 at 16:19 UTC

I really do not understand the need foe new release to add support for new camera. This can be easily accomplish through external files like .dll or similar. It's only a new swet of parameters to be used by existing algorithm - not dedicated algorithm for each brand or model...

Direct link | Posted on Oct 4, 2012 at 13:13 UTC as 9th comment | 4 replies
In reply to:

kenyee: No more Pentax mount? :-P

@Kfrog

The Sony version is different fro N/C version by removing the image stabilisation, see note [4]:
[4] The Sony mount does not include VC, as Sony digital SLR bodies include image stabilization functionality. The Sony lens is designated as "SP 70-200mm F/2.8 Di USD"

This could probabely work well also with Pentax. It looks like Pentax DSLR market share is just not significant enouph for Tamron to make a K mount version

Direct link | Posted on Sep 14, 2012 at 06:37 UTC

Taking into cosideration the close cooperation in lens design with Sony (Tamron is partially owned by Sony), I can only expect the rumored upgrade SONY 70-200/2.8 mark II will basically share same optical design with Tamron, adding Sony styling and price.

Waiting to see how this lens really performs.

Direct link | Posted on Sep 14, 2012 at 06:33 UTC as 23rd comment
On Just Posted: Sony Alpha SLT-A57 review news story (235 comments in total)

Thanks for the great, detailed and informative review.

As a RAW only shooter I am now quite sure which APS-C SONY backup I will go for, if I drop the A99 option, for the too high cost of upgrading from my A850. Looks like the A850 is to stay for the near future.

Now I gust have to decide which "kit" zoom to adopt to the A57 - Sony 16-50mm f/2.8 DT SSM or DT 18-135 F3.5-5.6 SAM

Direct link | Posted on Sep 14, 2012 at 06:28 UTC as 43rd comment | 1 reply
Total: 39, showing: 1 – 20
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