Karl Gnter Wnsch

Karl Gnter Wnsch

Lives in United States AK, United States
Works as a software developer
Joined on Jun 24, 2002

Comments

Total: 173, showing: 61 – 80
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On Canon EOS 7D Mark II First Impressions Review preview (2600 comments in total)
In reply to:

shawn in ak: Same trajectory as the last major Canon releases. All of the pixel peepers and gearheads will bash it on release but it will be an exceptional imaging machine once placed in the hands of the actual photographers it's created for: pro and semi pro wildlife and sports shooters. This is THE crop-sensor camera for those users, and along with the lenses, THE system.

@JoEick, I couldn't concur more - it's a matter of continuity. Usability over additional gimmicks that those who are going to use the camera never would need.

Direct link | Posted on Sep 15, 2014 at 16:18 UTC
On Canon EOS 7D Mark II First Impressions Review preview (2600 comments in total)
In reply to:

Zerg2905: OK. Decision time: I will buy this "epic fail", but only if ISO 6400 is "reasonable" and ISO 3200 good, which means far better IQ vs the 7D I own. All other specs are formidable, but difference in IQ cannot be ignored.
So, putting all the bla bla aside, real images shot with this camera will help.

I also wonder if Canon asked itself the following question: pros shooting with this new camera can actually SELL their indoor / low or difficult light images? In other words, can the IQ be good enough so that it can justify the investment? Or this is "reserved" to the 1D-X?

You will get a small improvement compared to the 70D - which turns out to be about a stop improvement over the current 7D. This isn't too shabby considering that the area of APS-C is quite a bit smaller than the area in a 1Dx...

Direct link | Posted on Sep 15, 2014 at 16:12 UTC
On Canon EOS 7D Mark II First Impressions Review preview (2600 comments in total)
In reply to:

Joe Ogiba: Poor Canon and Nikon, they are stuck in the past with 1080p DSLRs while companies like Samsung have cameras like the NX1 with cinema 4K and 15fps with AF.

Which of the adapted lenses do offer autofocus or even aperture control? None whatsoever! Thus the Samsung camera is a one off which has no backing by the system...

Direct link | Posted on Sep 15, 2014 at 14:18 UTC
On Canon EOS 7D Mark II First Impressions Review preview (2600 comments in total)
In reply to:

Lucas_: Canon users finally have a more modern APS-C DSLR, with most bells & whistles! It seems to be a worthy successor to the old Eos 7D and is getting closer to the excellent Sony A77 II, although at a quite higher price. I know old customs die hard, but IMHO both Canon and Nikon should at least be adopting EVFs by now!

EVF are garbage in my book. It's the largest error in judgement any company can make to bet it's house on that. They simply are rubbish at showing the scene properly, all you get to see is the heavily constrained view - constrained by the sensor (lack of DR), processing (lack of speed) and the display device (lack of DR again). For a photographic tool this just doesn't cut it.--

Direct link | Posted on Sep 15, 2014 at 14:14 UTC
On Canon EOS 7D Mark II First Impressions Review preview (2600 comments in total)
In reply to:

David Naylor: The AF sounds great, but honestly it is a little underwhelming after having seen what Samsung just released in the NX1...

And WHY ON EARTH have they not put a touchscreen on this thing? The lack of touchscreen when they have DPAF is mind-boggling.

And with what lens would you pair that "specification monster"?
The Samsung still has to prove it's worth - the on sensor PD-AF does have some severe drawbacks to a dedicated PD-AF (it's a matter of physics). The 7DII has both - the dedicated PD-AF for photography when speed matters and the on sensor PD-AF in it's best possible implementation (compared to the Samsung it has not only 100-something cross type sensors, it has about 15 million of them) for video use.

Direct link | Posted on Sep 15, 2014 at 14:10 UTC
On Canon EOS 7D Mark II First Impressions Review preview (2600 comments in total)
In reply to:

Karl Gnter Wnsch: Kudos to Canon, just like the 7D with it's ground breaking AF system (5 years ago it was and it still performs better than most of what came afterwards) they again put in a class leading AF system into their flagship APS-C - yet this time class leading means ALL DSLR... They didn't leave one stone unturned in it, f/8 focusing, -3EV focusing, 65 all cross type AF points, tracking assist with metering sensor (like their main sports pro camera 1Dx), extreme large frame coverage, spot AF, incredible grouping abilities...
Pair that with a evolution of one of the best APS-C sensors (the 70D) and the buffer sized to match the available frame speed and you have the complete package that will be hard to beat by any of it's competition...

It's far better at ISO-400 and above than all the comptition from Sony or Nikon. Just at base ISO it's lacking a bit. But if that means that at high ISO you lose color fidelity then I rather have the small disadvantage where it doesn't matter to a photographer (only the pixelpeeper and HDR maniac cares about base ISO DR)...

Direct link | Posted on Sep 15, 2014 at 13:13 UTC
On Canon EOS 7D Mark II First Impressions Review preview (2600 comments in total)
In reply to:

Lab D: First I read this and then I saw the new Samsung. I don't know anyone who buys Samsung, but it seems to beat the 7D in every spec.
For example 10 FPS is not exciting when others are offering 11,12 and 15 FPS. "Full HD" video is boring when other shoot 4K.
I just hope the 7D does use the same technology in this new sensor as found in the Rebel T2i.

The A77II? Don't make me laugh. World class failure you mean! Have you even tried it? The viewfinder is one big failure and the buffer management is a shambles - and it's capabilities to follow a moving subject are iffy to non existant. Sony never got the hang of predicting the movement so that their focus was spot on at the time of the exposure, they always have lagged - even if their mirror doesn't move their failure is in the algorithms.
And you forget that the SLT is a dying breed. All development from Sony now solely is aimed at the mirrorless junk they churn out, seeking to avoid any competition with the big guns like Canon or Nikon...

Direct link | Posted on Sep 15, 2014 at 13:10 UTC
On Canon EOS 7D Mark II First Impressions Review preview (2600 comments in total)

Kudos to Canon, just like the 7D with it's ground breaking AF system (5 years ago it was and it still performs better than most of what came afterwards) they again put in a class leading AF system into their flagship APS-C - yet this time class leading means ALL DSLR... They didn't leave one stone unturned in it, f/8 focusing, -3EV focusing, 65 all cross type AF points, tracking assist with metering sensor (like their main sports pro camera 1Dx), extreme large frame coverage, spot AF, incredible grouping abilities...
Pair that with a evolution of one of the best APS-C sensors (the 70D) and the buffer sized to match the available frame speed and you have the complete package that will be hard to beat by any of it's competition...

Direct link | Posted on Sep 15, 2014 at 13:04 UTC as 577th comment | 14 replies
On Canon EOS 7D Mark II First Impressions Review preview (2600 comments in total)
In reply to:

Lab D: First I read this and then I saw the new Samsung. I don't know anyone who buys Samsung, but it seems to beat the 7D in every spec.
For example 10 FPS is not exciting when others are offering 11,12 and 15 FPS. "Full HD" video is boring when other shoot 4K.
I just hope the 7D does use the same technology in this new sensor as found in the Rebel T2i.

Everybody will buy the Canon, nobody will get the Samsung. The latter simply doesn't have the lens system to back it up. It could have the holy grail of autofocus, without the lenses it's a DOA - and there are only lenses up to 200mm available (and it's a slow one)...

Direct link | Posted on Sep 15, 2014 at 12:54 UTC
On Canon EOS 7D Mark II First Impressions Review preview (2600 comments in total)

@DPreview, the remote connector type is not E3, it's N3!
And there are discrepancies in reported ISO ranges, either it's 50-12800 or 100-16000, depending on which page of your preview I choose to believe...

Direct link | Posted on Sep 15, 2014 at 12:26 UTC as 601st comment | 4 replies
On Sigma announces two 150-600mm F/5-6.3 DG OS HSM zooms article (136 comments in total)
In reply to:

Karl Gnter Wnsch: If the "Sport" version is geared at the professionals which do not care that much about weight, why isn't it at least f/5.6? As f/6.3 they are missing the limit of the focusing systems - and since that is a physical limit the focusing on almost all DSLR will be compromized and not function as advertised and guaranteed by the manufacturers!

The new D750 is one (new) camera, how many more do have f/8 focusing capability?
"So it will work up to F8. Probably F11 with the center point. "
That's highly unlikely as f/8 already is very very tight and when a focusing module allows for f/8 focusing it also means that it's less precise for all apertures.

Direct link | Posted on Sep 12, 2014 at 14:37 UTC
On Sigma announces two 150-600mm F/5-6.3 DG OS HSM zooms article (136 comments in total)
In reply to:

Karl Gnter Wnsch: If the "Sport" version is geared at the professionals which do not care that much about weight, why isn't it at least f/5.6? As f/6.3 they are missing the limit of the focusing systems - and since that is a physical limit the focusing on almost all DSLR will be compromized and not function as advertised and guaranteed by the manufacturers!

@D1N0, the -3 EV focusing has nothing to do with the aperture limit imposed by the beam splitter positioning. If the beam splitter is designed to work up to f/5.6 then at f/6.3 the focusing will be unreliable even if you try it in blazing sunshine.

Direct link | Posted on Sep 12, 2014 at 12:32 UTC
On Sigma announces two 150-600mm F/5-6.3 DG OS HSM zooms article (136 comments in total)
In reply to:

Karl Gnter Wnsch: If the "Sport" version is geared at the professionals which do not care that much about weight, why isn't it at least f/5.6? As f/6.3 they are missing the limit of the focusing systems - and since that is a physical limit the focusing on almost all DSLR will be compromized and not function as advertised and guaranteed by the manufacturers!

@Plastek: No it doesn't depend on the amount of light. Autofocus works by separating certain light beams and these are blocked beyond f/5.6 or f/8 (depending on focusing module design, for most cameras it's f/5.6 - and for the rest of the cameras it's f/8 only for a very limited number of focusing points located in the very center of the frame) by the aperture.
So only light that has passed in close vicinity of the aperture will reach the focusing sensor and many of the photons making up that light have been affected by the inevitable diffraction and thus are no longer fit for the purpose of focusing. Our sun could go supernova and the focus would still be compromised and have reliability problems!

Direct link | Posted on Sep 12, 2014 at 10:22 UTC
On Sigma announces two 150-600mm F/5-6.3 DG OS HSM zooms article (136 comments in total)
In reply to:

b534202: So the 2x TC will work with these?

@Plastek, no it won't. You will have a lens+TC combination that is f/11-f/13 wide open, that means that the combination is diffraction limited even then - focusing will not work at all, about the same chance to get that working as satan ice skating to work...

Direct link | Posted on Sep 12, 2014 at 08:13 UTC
On Sigma announces two 150-600mm F/5-6.3 DG OS HSM zooms article (136 comments in total)
In reply to:

brelip: oh, and great job Sigma. Though i do wish the C is APSC only to save more weight...

Again they both have FF coverage as having smaller frame coverage does have not a single benefit for telephoto lenses!

Direct link | Posted on Sep 12, 2014 at 07:38 UTC
On Sigma announces two 150-600mm F/5-6.3 DG OS HSM zooms article (136 comments in total)
In reply to:

b534202: So the 2x TC will work with these?

It will be mountable but there will be not a single DSLR that will be able to focus with that teleconverter in place...

Direct link | Posted on Sep 12, 2014 at 07:35 UTC
On Sigma announces two 150-600mm F/5-6.3 DG OS HSM zooms article (136 comments in total)
In reply to:

brelip: oh, and great job Sigma. Though i do wish the C is APSC only to save more weight...

Those lenses are lighter because they use lighter housing materials, APS-C limited telephoto lenses do need additional internal baffling and would thus be heavier if they used the same housing and lens materials. You can not make any of the lens elements on the subject side of the aperture any smalle and the lens elements on the image side of the aperture aren't that big to begin with.

Direct link | Posted on Sep 12, 2014 at 06:02 UTC
On Sigma announces two 150-600mm F/5-6.3 DG OS HSM zooms article (136 comments in total)
In reply to:

Karl Gnter Wnsch: If the "Sport" version is geared at the professionals which do not care that much about weight, why isn't it at least f/5.6? As f/6.3 they are missing the limit of the focusing systems - and since that is a physical limit the focusing on almost all DSLR will be compromized and not function as advertised and guaranteed by the manufacturers!

Yet the focusing is unreliable because the focusing modules have the design limit which can't be bypassed. No amount of in line trickery can avoid that, the light reaching the focusing module is heavily compromized by diffraction - if the beam splitters even can let it pass due to their design!

Direct link | Posted on Sep 12, 2014 at 05:58 UTC
On Sigma announces two 150-600mm F/5-6.3 DG OS HSM zooms article (136 comments in total)
In reply to:

brelip: oh, and great job Sigma. Though i do wish the C is APSC only to save more weight...

In telephoto lenses you can not save any weight by restricting it to APS-C use!

Direct link | Posted on Sep 12, 2014 at 05:42 UTC
On Sigma announces two 150-600mm F/5-6.3 DG OS HSM zooms article (136 comments in total)
In reply to:

Karl Gnter Wnsch: If the "Sport" version is geared at the professionals which do not care that much about weight, why isn't it at least f/5.6? As f/6.3 they are missing the limit of the focusing systems - and since that is a physical limit the focusing on almost all DSLR will be compromized and not function as advertised and guaranteed by the manufacturers!

Yes, it would have had to be 107mm diameter instead of the 95mm they got now - but f/6.3 make it even incompatible with the 1.4x teleconverter for the pro grade DSLR which can focus up to f/8 - because for those the autofocus cutoff is quite a bit more pronounced. So if they do produce one lens for the "pro's" then they have made a big blunder by missing that limit.

Direct link | Posted on Sep 12, 2014 at 05:40 UTC
Total: 173, showing: 61 – 80
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