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: 92, showing: 21 – 40
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On Coming soon: Lens Reviews to return to dpreview.com article (274 comments in total)

For what it's worth - I wouldn't bother with DxO results, their testing procedures are so far off any reality that these values serve no one - as often as they contradict reality they should really refrain from publishing anything. Anyone trusting their data is IMHO up a creek without a paddle...

Direct link | Posted on Oct 3, 2012 at 12:34 UTC as 34th comment | 1 reply
On Accessory Review: Manfrotto Solo VI DSLR Holster Bag article (96 comments in total)
In reply to:

GPW: All of Manfrotto equipment is overpriced. I am in the process of replacing my Manfrotto tripod, monopod and heads with the much better and cheaper Induro brand. I own the Induro AT413 tripod and it kicks Manfrottos butt in terms of build,stability and price.

@GPW, I agree. I tossed my Manfrotto gear into the metal recycling bin because I couldn't bring myself to lie enough to be able to resell it. So I took quite a hefty loss but switching to a combination of Novoflex, Feisol and Berlebach tripods and heads did make a heck of a difference. Recent Manfrotto products not only are too expensive, in parts they are far worse than previous models.
IMHO the reason for their products to go backwards is to protect the premium brand in their parent company lineup - Gitzo...

Direct link | Posted on Sep 29, 2012 at 09:13 UTC
On Accessory Review: Tamrac Zipshot Tripod article (94 comments in total)

The fixed length of the legs make setting up that wannabee tripod (it's none by my book) impossible on terrain that's not perfectly flat. Even the slightest angle of the ground would make me fear for the stability of the rig... Why do you give this a rating of 4 stars when really it deserves one at maximum? Because as far as tripods are concerned you're probably better off without - at least then you won't have to deal with the rig toppling and destroying your gear in the process...

Direct link | Posted on Sep 21, 2012 at 10:22 UTC as 52nd comment | 1 reply
On Canon EOS 6D preview (1044 comments in total)
In reply to:

bradleyg5: Pardon my French, but what a piece of junk. 11 point AF with only a centre cross point? They trying to make sure this thing doesn't compete with the 5dII or what? Why does a digital rebel get more cross points.

Everybody and his dog wanted built in Wifi and GPS - which is what you got, so something else had to give. You don't get anything for free...

Direct link | Posted on Sep 17, 2012 at 08:10 UTC
On Sony Alpha SLT-A99 preview (326 comments in total)
In reply to:

twenty200: I own an A77. Until you've shot your style of photography with an A77 or A99, you simply have no idea how much of a positive impact this kind of viewfinder will have. The first time I went out shooting with my A77, I couldn't stop saying "Wow." Not because I was dazzled by the technology. I was wowed by the immense usability. An EVF gives you so much more control over the camera than you've ever known before. It's a lot like the leap from film to digital all over again in that it's even more instant feedback. I can't justify buying an A99, but if I could, I'd have already done it. I'm not a Sony guy, but I'm definitely sticking with Sony unless somebody else creates an even better EVF. For me, it's the killer feature I can't do without. I thought it would be a gimmick. It turned out to be the most photographer friendly feature I could have ever imagined.

What do you do when the subject moves and you want to pan with it? Do you use a crosshair finder in the flash hot shoe or do you simply refrain from shooting such subjects? I tried and the EVF is a royal pain in the proverbial... It sucks big time, there hasn't been a worse invention since the spanish inquisition. It doesn't show half as much of the dynamic range of the scene which means that you can't really judge the scene at all!

Direct link | Posted on Sep 13, 2012 at 15:05 UTC
On Sony Alpha SLT-A99 preview (326 comments in total)
In reply to:

Karl Gnter Wnsch: RIP Minolta/Sony... I have had the displeasure of experiencing the EVF of current SLT - they are gruesome. "Sony's 2.3M dot OLED viewfinder is a pleasure to work with..." is something I can not confirm, they are a pain under most circumstances (literally as they disturb the light adaptation of the viewfinder eye which leads to headaches for many) and plain unusable under normal daylight conditions if you happen to have to wear glasses...

@ieR: So you need to be photographing a face - what about an animal oder a butterfly - they look nice in backlit situations? Sorry, but the EVF malarchy is and always will be a second class toy!

Direct link | Posted on Sep 13, 2012 at 14:57 UTC
On Sony Alpha SLT-A99 preview (326 comments in total)
In reply to:

Karl Gnter Wnsch: RIP Minolta/Sony... I have had the displeasure of experiencing the EVF of current SLT - they are gruesome. "Sony's 2.3M dot OLED viewfinder is a pleasure to work with..." is something I can not confirm, they are a pain under most circumstances (literally as they disturb the light adaptation of the viewfinder eye which leads to headaches for many) and plain unusable under normal daylight conditions if you happen to have to wear glasses...

@AmaturFotografer:
Yes, the OVF shows more DR than the camera can capture but with experience you know how to judge the scene - or when to mitigate that problem by using for example a flash gun.
The EVF lack of information OTOH can't be compensated by any amount of experience because it doesn't show the relevant information. Take a portrait shot in a backlit situation - you wont even see your subjects face in the EVF, so you have no chance to judge when to take the shot!

Direct link | Posted on Sep 12, 2012 at 09:47 UTC
On Sony Alpha SLT-A99 preview (326 comments in total)
In reply to:

Karl Gnter Wnsch: RIP Minolta/Sony... I have had the displeasure of experiencing the EVF of current SLT - they are gruesome. "Sony's 2.3M dot OLED viewfinder is a pleasure to work with..." is something I can not confirm, they are a pain under most circumstances (literally as they disturb the light adaptation of the viewfinder eye which leads to headaches for many) and plain unusable under normal daylight conditions if you happen to have to wear glasses...

@phutyle: Have you ever tried to compose an image at daylight with the EVF? I bet you didn't because the highlights blow out, the shadows block up - you can't tell if your subject is surrounded by clutter or a decent backdrop because the wretched EVF can't show more than 4 maybe 5 stops of dynamic range whereas the camera captures 10-14 stops in optimal circumstances. This makes it unusable in the best of circumstances. With glasses this is even worse because then the EVF is prone to be too dark to see anything, even in the meager dynamic range it can show!

Direct link | Posted on Sep 12, 2012 at 09:17 UTC
On Sony Alpha SLT-A99 preview (326 comments in total)

Putting the same unmodified focusing system from a crop camera into a full frame body is plain silly. Sorry, but with that minute frame coverage you have no chance but to focus and recompose each and every shot!

Direct link | Posted on Sep 12, 2012 at 07:35 UTC as 91st comment
On Sony Alpha SLT-A99 preview (326 comments in total)

RIP Minolta/Sony... I have had the displeasure of experiencing the EVF of current SLT - they are gruesome. "Sony's 2.3M dot OLED viewfinder is a pleasure to work with..." is something I can not confirm, they are a pain under most circumstances (literally as they disturb the light adaptation of the viewfinder eye which leads to headaches for many) and plain unusable under normal daylight conditions if you happen to have to wear glasses...

Direct link | Posted on Sep 12, 2012 at 07:28 UTC as 92nd comment | 9 replies
On Just Posted: Fujifilm X-E1 hands-on preview article (277 comments in total)
In reply to:

Karl Gnter Wnsch: Another epic fail on the sensor side. Again - just like the SCCD's introduced ages ago - the resulting images show abundant artifacts because of Fujis choice of a different sensor layout. Previously the sensor cells were hexagonal and orientated mainly diagonally - trading off resolution for tighter packing and requiring an rotational interpolation.
Now they are sacrificing color fidelity on the altar of luminance resolution. Sorry but this concept doesn't pass muster for me! The traditional demosaicing algorithms are well researched and can deliver exceptional results. The Fuji concept is not free from moiree though they claim it to be better - which it may well be but the tradeoff to not have well defined color edges ruins this whole concept for me.

@Raist3d: You might not want to see it but look at what for example happens to foliage - even in the highly praised in camera JPEG I find this kind of smudging intolerable. I have had two Fuji SCCD cameras and the same story is happening again - they produce a "revolutionary" sensor design which has serious drawbacks for little or no benefit...

Direct link | Posted on Sep 6, 2012 at 10:19 UTC
On Just Posted: Fujifilm X-E1 hands-on preview article (277 comments in total)

Another epic fail on the sensor side. Again - just like the SCCD's introduced ages ago - the resulting images show abundant artifacts because of Fujis choice of a different sensor layout. Previously the sensor cells were hexagonal and orientated mainly diagonally - trading off resolution for tighter packing and requiring an rotational interpolation.
Now they are sacrificing color fidelity on the altar of luminance resolution. Sorry but this concept doesn't pass muster for me! The traditional demosaicing algorithms are well researched and can deliver exceptional results. The Fuji concept is not free from moiree though they claim it to be better - which it may well be but the tradeoff to not have well defined color edges ruins this whole concept for me.

Direct link | Posted on Sep 6, 2012 at 08:11 UTC as 61st comment | 9 replies
On Facebook pushes photo prominence in timeline article (83 comments in total)
In reply to:

EmmanuelStarchild: Don't forget, once you post a photo to Facebook it becomes their property. You may delete it, but FB has already copied it and added it to their database.

@graybalanced, sorry, but sublicensing doesn't mean that, they grant themselves a irrevocable right to sublicense as they see fit. This includes sublicensing your photos to porn sites, mcdonalds or whoever pays enough to them!

Direct link | Posted on Aug 2, 2012 at 09:21 UTC
On Facebook pushes photo prominence in timeline article (83 comments in total)
In reply to:

EmmanuelStarchild: Don't forget, once you post a photo to Facebook it becomes their property. You may delete it, but FB has already copied it and added it to their database.

@tkbslc: Sorry, you are quite wrong! Facebook grants themselves the right to sub-license without any monetary redemption to the copyright owner. - So be happy to have your image show up in advertising for anything - even things that go against every grain of your belief!

Direct link | Posted on Aug 1, 2012 at 07:43 UTC
On Facebook pushes photo prominence in timeline article (83 comments in total)
In reply to:

Camediadude: Please, for the love of mercy, no more about facebook...

No, there is no way to keep them from exploiting your images as if they were their own - wouldn't you be proud to find your images promoting anything you hate?

Direct link | Posted on Jul 31, 2012 at 20:16 UTC
On Facebook pushes photo prominence in timeline article (83 comments in total)

Square crop (which does't fit any of my images), mingling in idiotic snapshots from other users, giving them the rights to sublicense the images you upload - sorry but which photographer with a sane mind would ever upload a single photo onto that %&%@&)-site?

Direct link | Posted on Jul 31, 2012 at 20:11 UTC as 29th comment | 2 replies
In reply to:

AshMills: Presumably the adapter for EF lenses is not optical, so should be dirt cheap?

@JackM, you got it the wrong way around! The EF-M lens would be an extreme Macro lens when mounted on a DSLR even if the adapter were 0 mm in length. The EOS EF or EF-S lens mounted on the extension tube (which basically the adapter is) OTOH will behave just like it should as it is used at the correct distance from the sensor due to the adapter...

Direct link | Posted on Jul 23, 2012 at 13:55 UTC
In reply to:

Esmee Farquhar: This could be a nice walk-around lens for my 60D.

If you get it do yourself a favor and get the Nikon version and a Nikon to Canon AF-confirm adapter. Without going through this indirect adaptation you'll have no focus confirmation. If you get a programmable adapter you could even have the correct lens info in the EXIF-data...

Direct link | Posted on Jul 16, 2012 at 14:26 UTC
On Researchers follow the noise to find composite images article (38 comments in total)

There should be an easy way around this detection. Simply take a noise reference shot of your camera (grey card) and overlay that over the final image (maybe after a pass of noise reduction on the shopped image. Why use the noise reference shot? Well it's a better representative than any algorithmic noise and would be harder to detect...

Direct link | Posted on Jul 10, 2012 at 07:33 UTC as 11th comment | 2 replies
On Zebras on the MacBook Pro - how the picture was taken article (69 comments in total)

How ironic that the Macbook Pro Retina Display as it is currently used is useless for editing photos as you either can have a sharp picture but impossibly small control elements and unreadable menus or usable control elements but an upscaled picture which isn't rendered sharply...

Direct link | Posted on Jul 9, 2012 at 07:38 UTC as 17th comment | 9 replies
Total: 92, showing: 21 – 40
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