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Messages - wopbv4

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76
EOS Bodies / Re: Bodies and cell towers?
« on: February 26, 2013, 11:17:52 PM »
There are definetely healh related issues to electro magnetic radiation (=antenna's).
Therefore, there are safe distance limits, see attached file

77
EOS Bodies - For Stills / Re: Canon 2x and 1.4x mk3 extenders
« on: February 23, 2013, 11:06:00 PM »
Hi Alex,

indeed in liveview it works, all be it very slow and the target needs to have a fair bit of contrast.
Anyway, from now on , I will carry a 12 mm extension tube, so I have the option to combine the extenders.

Thanks everybody !

Ben

78
EOS Bodies - For Stills / Re: Canon 2x and 1.4x mk3 extenders
« on: February 23, 2013, 08:18:06 AM »
Ok, I missed that.
I tried with 1DX, 1.4XIII, 12mm Kenko, 2XIII, 70-200 F2.8 L II @200mm, still no joy.

Even if I manually focus first and then press the shutter button halfway, it still hunts and is unable to acquire focus.

It is night in Oz, but I switched all the studio lights on (=a lot) and sufficient distance around 10 m (=manual focus works) at a high contrast subject, it still hunts like mad.


I will try in daylight tomorrow morning, but I have little hope.

Anyway, it works in manual mode, so thanks for the the tip !!


Hope this informs

Ben


79
EOS Bodies - For Stills / Re: Canon 2x and 1.4x mk3 extenders
« on: February 22, 2013, 11:38:55 PM »
sorry for the typo
should be:
1DX, 2XIII, 12mm Kenko, 1.4XIII, 70-200 F2.8 L II @200mm.

80
EOS Bodies - For Stills / Re: Canon 2x and 1.4x mk3 extenders
« on: February 22, 2013, 11:37:30 PM »
Well...darn, now I need a 12mm extension tube...  ;) If it works the same, that means the 1.4xIII-EF12-2xIII combo behind a 600/4 will give me 1680mm that reports as f/8 and will AF on the 1D X. 

I tried :
1DX, 2XIII, 12mm Kenko, 1XIII, 70-200 F2.8 L II @200mm.

Manual focus works, but autofocus ( single spot AF in the center) does NOT. I tried to focus on infinity, 10 m, 5 m, none of them focussed.

I might be doing something wrong?

81
Landscape / Re: Transmission tower
« on: February 11, 2013, 06:55:15 PM »
Hi,

like the picture!!

Just a few words on the safety aspect of this.
Powerlines emit Low Frequence Electomagnetic Radiation, which you can not see, feel ....
It is a know fact that long exposures to this causes health effects such as dizzyness, headaches etc..
Therefore, in Australia the law says that one has to stay at least 200 m away from 380KV powerlines.
As you only were only close to the powerlines for a short time, there is nothing to worry about.
On the other hand, power distribution stations, so the once with hugh transformers is a place to stay away from.
The guys that work at power distribution stations have a Permit To Work system, which allows them to work for a MAXIMUM of one hour close to transformers.

Hope this informs

Ben

82
Animal Kingdom / Re: Show your Bird Portraits
« on: January 27, 2013, 04:42:21 AM »
1DX, 70-200 F2.8 L II +2xIII, iso 1600, F11, 1/1250.

83
Technical Support / Re: 1DX CR2 files won't preview on IMac
« on: January 24, 2013, 02:00:01 AM »
Hi,

upto around October 2012, I had the same problem. After installing Mountain Lion 10.8 the problem was fixed

see also:

http://support.apple.com/kb/HT5371

It also states :

"To install Digital Camera RAW Compatibility Updates, you may need certain versions of Aperture or iPhoto already installed on your Mac."

Hope this helps

Ben

84
Hope this helps.

I have a flipside 400 AW and my 1DX, with 70-200 F2.8 II happily fits with room to spare . That combo is ~38 cm long.

When I fit a 2X, it becomes ~ 42 cm long and it JUST fits in the 400AW.

I have had the same question, 300 vs 400 and I am happy that I decided for the 400. It takes the above plus a 16-35, 24-70 and a 100 mm macro without any problems.

I find that the 400 series are a similar size as a normal daypack for hiking.

The internals of the pro-trekker are very similar to the flipside that I have, the only difference is that the flipside opens at the back.  I find this usefull, because when you put the pack on the ground to take a lens out, the front will get dirty, and not the back.

This probably confused more then helps.


85
Lenses / Re: Workaround for Loose Lens Cap on 8-15mm Fisheye
« on: December 24, 2012, 09:21:33 PM »
Indeed, I used superglue.
for me it is important that the lens is protected in my camera bag.
In use, I do not use the lens cap/lenshood at all on my 1DX.

Initially I used your solution with scratch resistant paper, but on several of my hiking trips the lenscap came off in by backpack, so I glued the cap and the hood together

86
Reviews / Re: Review - Canon EF 8-15 f/4L Fisheye
« on: November 12, 2012, 04:57:09 PM »
together about 80$ at B&H. I checked this before I glued them together.

87
Reviews / Re: Review - Canon EF 8-15 f/4L Fisheye
« on: November 11, 2012, 11:36:01 PM »
Actually the only thing the hood is good for is peripheral protection of the front element.  Unless I'm going for a 180 degree shot I just leave it on for that extra protective ring.  The flourine coatings on these are super hard and dust/grime resistant and fortunately easily cleaned with a dry lens cloth.  Though I have used eyeglass cleaner to get rid of rain spots, most should never need more than a clean dry cotton lint free cloth.

As noted in the article fish eyes are not for everyone.  I reserve this lens for extreme close up work where I just need the short working range this lens provides.  It's great for in car photography and video.  I've used it also in drive through safari's where animals come up to your window.  It's also been useful during hikes and rock climbs where you cant always back up to get your subject in view.  You can honestly shoot a person from 2 feet away and capture nearly all of them and decent background so I would say this is good for people who like rock climbing or caving where you just don't have the luxury of distance to capture your subject.

I have tried being creative with the distortions but I dont find it too practical in that sense.  It's just another tool in the bag when a 20 or 24mm lens just isn't wide enough or when you need to film in close confinement such as in a car.


I got so frustrated with the lenscap that I  have superglued the lenscap and the lenshood together, so it has become rigid. So, the lens is protected when it is in my camearbag, but is not protected at all when in use



88
Lenses / Re: New 24-70 II, maybe AFMA will help?
« on: November 08, 2012, 03:09:43 AM »
Hi ,

looks to me as serious case of front focusing.
I believe that you took this picture with the camera angled down.

Anyway, the leaves at the bottom of the picture (5 o'clock) are sharper then leaves behind it. Also purple flowers at 7 o'clock look a bit sharper then flowers at the centre. All this points to front focusing.

Please do a simple test. Put a ruler at a 45 degree angle and focus on the middle.  This should clearly show if you have a front focusing problem.

Hope this helps

Ben

89
Hi,

does anybody have experience with the Manfrotto MVR911ECCN electronic remote?
Although it might be a good idea to use a "tethered" system for focusing, I am worried that the noise of the USM motors will be picked up, even with external microphones?

Furthermore, is the focusing accurate and fast?

90
Canon EF Prime Lenses / Re: Canon EF 100mm f/2.8L Macro IS USM
« on: November 02, 2012, 09:27:54 PM »
EOS 1D X, EF 100mm f/2.8L Macro IS USM, 1/400 s, f/14, ISO 320

Yes, we do have a lot of light in Oz

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