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Messages - wopbv4

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76
Macro / Re: canon 100L+tubes+2x converter ?
« on: March 20, 2013, 07:28:26 AM »
I have tried :
1DX, 100L, combined with kenko 12 and 20 and  36 and 2XIII.
The only way that I could work with this combo was on a tripod and using Helicon software for the focussing and image stacking.
Focussing by hand is next to impossible with such a  limited DOF.
I will post some images later, comparing the 100L as is and with the combo.

Hope this helps

Ben

And the pics. The shell is approximately  8*3 mm in size

77
Macro / Re: canon 100L+tubes+2x converter ?
« on: March 19, 2013, 08:58:43 PM »
I have tried :
1DX, 100L, combined with kenko 12 and 20 and  36 and 2XIII.
The only way that I could work with this combo was on a tripod and using Helicon software for the focussing and image stacking.
Focussing by hand is next to impossible with such a  limited DOF.
I will post some images later, comparing the 100L as is and with the combo.

Hope this helps

Ben

78
Animal Kingdom / Re: Show your Bird Portraits
« on: March 16, 2013, 07:42:42 AM »
Another shot of a darter

79
Animal Kingdom / Re: Show your Bird Portraits
« on: March 16, 2013, 07:32:27 AM »
Darter. 70-200 2.8, 2xIII

80
This was the main intent of my post: to warn potential buyers that this is an issue on wide angle lenses.
I have the same filter on my 70-200 F2.8L II and it works great.

81
Lenses / green color cast with hoya 82 mm UV & IR filter on 16-35
« on: March 03, 2013, 12:35:18 AM »
Hi,

I am rather disappointed with the HOYA 82 UV IR filter on the 16-35. There is a very clear green color cast in the corners.

The slim UV filter that I have as well does NOT have this problem.

At 205$, this hurts.

Settings, 16-35 F2.8 L @16 mm, 1DX, F2.8, iso 250, 1/6400.

Stopping down helps, but even at F9.0 it is still visible


82
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

83
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

84
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


85
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.

86
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?

87
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

88
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.

89
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

90
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.


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