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Messages - Marsu42

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Lenses / Re: 6d/100L macro/Kenko 2X TC lockup
« on: December 31, 2013, 01:38:02 AM »
I'd much rather see Canon assume that things work until people scream, but take the time to fix crasher-level bugs when we report them..

You did report this to Canon? What did they say then?

Lenses / Re: Making a perfectly sharp lens corner to corner idea
« on: December 30, 2013, 03:59:48 PM »
The drawbacks that I see would be the size (thickness and weight) of the lens, but ignoring that why is this approach not taken?

Probably the ef mount doesn't allow a larger circle to be projected into the camera body, so you cannot repeat the same "crop" effect, at least not to this extend? If you look at the open ff camera, the sensor edges go right to the mount edges, and the lens goes *into* the mount so it cannot be larger than that.

EOS Bodies - For Stills / Re: bad senzor on 5D mark III
« on: December 30, 2013, 03:56:05 PM »
Point out that it is not caused by unsteady air, air polution and not air haze.

Looks really strange, but if you shoot raw you should upload a raw file somewhere for debugging. Do you have a second camera you can shoot a comparison with? If the raw file also exhibits this behavior your camera might, just might be broken, you never know.

Reviews / Re: Review - Canon EF 24-70 f/4L IS
« on: December 30, 2013, 03:45:42 PM »
So why introduce the 24-105 in the first place?

My only guess it were other times back then when Canon had a different marketing approach, they wanted a complete ff 5d2 solution with one lens to keep the system affordable. Not that everyone and his cat has a cheaper 6d ff camera and Canon is on the money grab they probably feel customers can be nudged into buying two lenses.

Reviews / Re: Review - Canon EF 24-70 f/4L IS
« on: December 30, 2013, 03:22:59 PM »
I'm guessing Canon were unable to produce the improvements seen in the 24-70 f4L if they had given it the 24-105 range without the lens having to retail as the level of the 24-70II.

Given the level of engineering expertise Canon has, I somehow doubt that - but I find it much more likely they want people to have more reason to buy a "natural" focal length addon of 70-200 or 70-300 ... with the overlapping 24-105 you can do ok, but as stated above a lot of times 24-70 is too short for a complete setup.

Canon General / Re: Move away from Canon to Nikon for sports?
« on: December 30, 2013, 03:16:38 AM »
At a sports event where pro photographers usually number 2:1 or so for Canon to Nikon bodies and lenses, the ratio was 3:2 for Nikon to Canon.

Like in pro sports shooting with 1d4/x and d4 cameras, semipro 5d3/d610 or amateur-crop shooting? As far as I see it, the area where Nikon blows Canon out of the water af-wise is in the sub-$2000 ff market, while in crop a 7d/70d af probably is "good enough" even with the d7100 being clearly superior.

Third Party Manufacturers / Re: Nikon D610 yes D600 minor upgrade!
« on: December 29, 2013, 09:58:44 AM »
Nikon really dropped the ball with the D800 and D600. Canon have really picked up their game with the 1Dx, 5DIII and 6D. The new 610 specs look very much like a feature plugged responce to the 5DIII and 6D.
If it were a response to the 6D, it would have GPS and Wi-Fi.  Unless by that, you mean it's a response to the 6D not flinging oil all over the sensor.  :D
It's not a response to 6D... we all know it's a response to D600...  :P

... as was the 6d, Canon would have never released it without the pressure from Nikon.

We could (or rather not start) to argue Canon vs. Nikon systems and specs vs. reality all day long, but from what I've seen Nikon's updated camera leaves very little to be desired and the trolling level of some of the posts above proves that Canon die hards are at a loss to find any real arguments :-o

RGB metering, silent shutter, 100% viewfinder, 6fps, f8 autofocus, 39 af points, 24mp ff for under $2000, oh my, this is throwing down the gauntlet.

Speedlites, Printers, Accessories / Re: 600 ex rt GEL holder, seriously?
« on: December 29, 2013, 03:21:45 AM »
1. Why is the gel holder open on the sides, the sides undefused and not even covered by the gel?

I think this is a side effect of moving the gel away from the flash, supposedly to protect it from the heat of a full power flash on overdrive with ages the gel. But it's really not thought through, the worst part is that the gel holder keeps falling off ... or maybe don't really mind :-> since it's a 1ct plastic part sold for $30 ?


Photography Technique / Re: Perspective correction
« on: December 29, 2013, 03:14:07 AM »
I thought a video would better illustrate the method, so I made one, here

Great, thanks for the video! Imho many of the options PS offers are overkill for "just" postprocessing and LR is quicker, easier and more to the point - but just like "smart sharpen" this perspective correction definitely is a worth a trip outside of LR. Adobe wouldn't want to put all the goodies in the inexpensive little brother, would they :-> ?

EOS Bodies - For Stills / Re: 5DMkIII AF performance at f/8
« on: December 28, 2013, 04:12:03 PM »
Besides, going down in resolution increases apparent sharpness when pixel peeping ;)

You can also get a nice bokeh look when you nearly squint your eyes when looking at a shot :->

Photography Technique / Re: Perspective correction
« on: December 28, 2013, 04:06:51 PM »
I'd only recommend DxO if you shoot a lot of UWA shots that you don't wat to look like UWA shots, otherwise everybody else is pretty much as good for regular perspective and distortion corrections.

With emphasis on the results and with practice that might be true, but at least as LR/ACR is concerned (I don't know about PS) DxO has a very nice and quick visual user interface which makes the correction a breeze.

In LR you can either have Adobe's upright have a go and if this fails have to tune the sliders for ages until you get what you want... at least I'm still struggling to do proper corrections that aren't minor, somehow it always ends up looking a tad wrong unlike with DxO. Having said that, spending the €€€ on DxO might not be necessary if already owning LR, gift horse and so on.

Photography Technique / Re: Perspective correction
« on: December 28, 2013, 11:45:51 AM »
The auto correction in LR is great!

... unless you compare it to DxO Viewpoint which does a much, much better job and has easy gui tools to select the verticals & horizontals. LR is nice enough for quick & minor adjustments and preserves the raw workflow, but for money shots DxO is definitely "worth it".

Lenses / Re: Canon EF 100 f/2.8L IS Macro autofocus?
« on: December 27, 2013, 04:44:36 PM »
@Marsu42 - does ML have an algorithm to fix shaky hands yet?   ;)

You'd be surprised - it does, though you big 1d people wouldn't know about it :-p

It's called "handheld mlu" and works by adding a little delay after pressing shutter and in addition to that engaging mlu since there's time for it. The result is that you can stabilize the lens better since you don't have the minimal imbalance from the shutter press action anymore, it works great with longer landscape exposures on non-IS lenses like the 17-40L.

For you the effectiveness of the IS at 1:1 might be close to zero, I have no reason to doubt your words, but you seem to be an exception.

In that case I have to doubt my own words :-p and have to add that I didn't run the statistical tests to really prove my observation, that would require a lot of shots of the same subject with IS on and off to compensate for the always different hand shake.

But I have used the L vs. non L and IS vs no IS quite enough to say that if your 1:1 macro shot is too shaky with IS off, IS won't rescue me, even the 1 stop observed above is only "nice to have" but I can easily get better results by simply taking 2-3 other shots and chose the best. I admit I leave IS on, but for the one reason that I often move out a bit to re-frame and get in the region when it's actually useful.

Lenses / Re: 6d/100L macro/Kenko 2X TC lockup
« on: December 27, 2013, 11:28:15 AM »
Canon wants an error code to show up on the screen that indicates that the problem is Kenko's fault.

But in this case, people would ask themselves: If they are able to print a nice error code, surely this just a cheap marketing ploy and Canon could have easily worked around the problem in the fw or at least with a fw update? Better let it fail silently, a crashed camera is much more likely to remembered :->

Lenses / Re: 6d/100L macro/Kenko 2X TC lockup
« on: December 27, 2013, 07:29:13 AM »
Canon is not responsible for Kenko's problems, but their camera should not lock up under an error condition, it should at least display an error code.....

Quite the contrary: As a programer in a profit-oriented enterprise you want the competitions' products to fail as catastropically as possible so that users realize the value of the original brand.

That's why Microsoft built its own DR-DOS error handling into an older Windows version which generated out a mean looking error messeage if the competitor's product was used. Microsoft was sued for this and lost, but only after successfully driving the original competitor to bancrupcy.

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