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Messages - ahab1372

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226
EOS Bodies / Re: Why not higher resolution video?
« on: April 26, 2013, 12:40:42 AM »
Because it is not trivial to process the larger amounts of data per second. Processors need to be fast enough and be able to dissipate the heat.

227
NAS is great to store files. I can also recommend Synology.

For the you are currently working on (especially video projects), I'd consider an external drive attached with Firewire 800, USB 3 or Thunderbolt (not for the 2011 Macbook though). The network connection of a NAS, even over a Gigabit network, could still be a bottleneck, depending on the networking performance of the NAS and/or your computer.
Use the internal drive as the Scratch disk, and keep the video files on the external drive until your done. Use the NAS for long term storage and backup.

228
Interesting, I've always assumed it was closed loop, since well, that's how I would have designed it, and all the pieces are there to close the loop. Perhaps the focus speed is hit too hard, but frankly I can't believe that since the second "look" would be nearly instantaneous.

That said, I'm no expert, I'm sure if it's true that focus using the phase detect is open loop, Canon has a very good reason for that.

TTYL
If it was closed loop, with a second look, we would be only a few steps away from a self-learning AFMA built in into the camera. Now that would be nice, wouldn't it.

229
Lenses / Re: EF 70-200 f2.8 IS L USM MKII weird noise (attached)
« on: April 16, 2013, 12:51:11 AM »
[...], and during operation the sound was almost a low growl.

I wouldn't be concerned about it...
It's life Jim ...

230
Site Information / Re: Minimum CR Forum IQ?
« on: April 12, 2013, 01:11:57 AM »
Why 'stop' @2.8.   That's not fair '2' those more 'open-minded' or those who have had 1.2 many cocktails.  ;)
Careful with those, corner sharpness will deteriorate, and you can expect increased vignetting
Only if you have a full frame! Some of us have a more slender boy type  ;)
Yes! Me 2 I too have the reach advantage. Although sometimes I wonder if I'm just narrow minded, or have tunnel vision.    :o

231
Site Information / Re: Minimum CR Forum IQ?
« on: April 11, 2013, 04:49:20 PM »
Why 'stop' @2.8.   That's not fair '2' those more 'open-minded' or those who have had 1.2 many cocktails.  ;)
Careful with those, corner sharpness will deteriorate, and you can expect increased vignetting

232
Lenses / Re: Focusing Advice on a Canon 24mm TS-E
« on: April 10, 2013, 07:17:19 PM »
Thanks for all the great advice. That e-book might be very useful.
I was checking focussing screens .
Am I correct there are no Canon focusing screens for the 5D Mark III.
Is it even necessary / helpful?
As far as I know, changing the focusing screen is recommended for wide aperture lenses (f < 2.8 ), so I don't think it will help with the TS-E 24mm.
Replacing the screen on the MK III is not as easy as with the II - it is not intended to be user-changeable.
Best option for focusing is live view, zoomed in, and scrolling across the image to see if the focus plane is in the right position

233
Lenses / Re: Prediction for 200-400
« on: April 10, 2013, 01:21:14 AM »
I say, don't count on it. If you have to buy or make reservation now, plan without it.

234
Lenses / Re: Focusing Advice on a Canon 24mm TS-E
« on: April 09, 2013, 07:29:25 PM »
Some great advice there everyone. Very informative and food for thought.
Someone recommended changing the focusing screen.
Is that a good way to go as well.
Kind Regards
Fergal
As far as I know, changing the focusing screen is recommended for wide aperture lenses (f < 2.8 ), so I don't think it will help with the TS-E 24mm

235
Lenses / Re: Focusing Advice on a Canon 24mm TS-E
« on: April 09, 2013, 02:15:51 PM »
Please note that when you are looking at live view, you are looking at F2.8.  It will be tough to get all portions of the scene super sharp at 2.8, even with tilt.  If you press your depth-of-field preview button to stop down the lens to your preferred aperture setting, you'll then see what the image will look like at that aperture.  If you are set to F16-F22, I'll bet everything will be sharp. 
not 2.8, it is f/3.5 - that is the max aperture for the TS-E 24mm. But what you said still applies, of course

236
Lenses / Re: Focusing Advice on a Canon 24mm TS-E
« on: April 09, 2013, 11:54:00 AM »
I don't have a TS lens, but found these interesting:
http://www.northlight-images.co.uk/article_pages/focus-with-tilt.html
http://www.onlandscape.co.uk/2011/04/tiltshift-photography-an-introduction-to-tilt/

The latter has a nice simulator that visualizes how the focal plane changes around. One thing that is a little counterintuitive (unless you are familiar with view cameras maybe): Moving the focus slider to the right means that you focus closer

237
Software & Accessories / Re: Bag while I am a "tourist"
« on: April 09, 2013, 01:10:23 AM »
I am happy with the ThinkTank Urban Disguise 60 v2.0. Fits under the airport seat (unless you use the front pockets), has a nice shoulder strap, and with the (optional) backback strap you can temporarily convert it into a backpack.
http://www.thinktankphoto.com/products/urban-disguise-60-v2.aspx
My 70-300L fits in vertically with lens hood and a rebel attached

238
Sirui M-3004 (aluminium) - really tall without center column extended (I'm 6'3'' and do not want it taller), and the legs fold over the head to about 20'' so it still fits in most carry-on suitcases. One leg can be used as a monopod. The legs have retractable spikes inside the rubber feet, everything comes in a nylon case with shoulder strap.
I can't complain about the quality, but cannot compare either - it is the only tripod I have used so far, other than gorilla pod.
The carbon version is the M-3204.
The N-series is shorter and lighter

239
Software & Accessories / Re: Ballhead for a RRS TVC33
« on: April 08, 2013, 02:30:55 PM »
Consider the Sirui K range of ballheads, build quality similar to BH-55 at half the price.
Really? I do have a Sirui K 30x and M-3004 legs (and like it), but have yet to get my hands on a RRS.
I'd call it ROS (Really OK Stuff), but would like to see how big the difference is to the really right stuff.

240
Site Information / Re: Tapatalk
« on: April 05, 2013, 06:49:42 PM »
+1
definitely much better than a browser on a smartphone

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