September 30, 2014, 06:57:00 AM

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Messages - Pancho

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1
Speedlites, Printers, Accessories / Re: CF Cards Vs SD Cards
« on: September 17, 2014, 08:17:54 AM »

Sandisk extreme pro  HSII 64G SD card - 250MB/s write speed, $230

The 7D MkII seems to be only compatible with UHS1 and not UHS2 as the latest Sandisk SD card is. So the Write speed seems limited to 95MB/s and not 250MB/s...

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EOS Bodies / Re: Canon 7DII - Did you preorder?
« on: September 15, 2014, 09:52:52 AM »
As soon as it will be referenced in my French dealer, I will pre-order it...

3
EOS Bodies / Re: Are you planning to purchase a 7D2
« on: August 27, 2014, 10:37:09 AM »
I've been waiting for it for so long to replace my 30D...

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Landscape / Re: Flowers
« on: October 21, 2013, 09:49:10 AM »
EOS 30D 50mm1.8 with extension tubes, f:8, 1/200, ISO200. The flower itself sizes arround 7mm...

5
Personnaly I use Hugin, an open source photo stiching software. It has both an easy user frendly automatic mode and a manual mode which gives access to all parameters. I never had problem on blue sky banding with this SW while I had it all the time with photostich...

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EOS Bodies / Re: Pick between two options for the Canon 7D II
« on: June 25, 2013, 04:04:02 AM »
7DII : Sport / Wildlife => speed, speed, speed.
AF must be fast and accurate even on moving objects.
High speed exposition so High ISO capability is a must.
High FPS.. Of course it is needed!
So, definitly, the second option is mine.
High MP is important to be able to crop and gain even more reach. But this can be obtained by choosing the right lens, while for high ISO and FPS, the lens choice can not do a lot of things...

7
EOS Bodies / Re: Is This the EOS 3D?
« on: June 18, 2013, 04:01:51 AM »
The distance between the red edge and the top of the "3" looks smaller compared to the one of the "EOS"... Looks like photoshoped...

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Technical Support / Re: Connect DSLR to PC/Projector wireless
« on: February 12, 2013, 03:43:18 AM »
If you have an Android device with OTG USB connector, you may use DSRL Controller (Beta) application with the Wifi passthrough feature. It seems to work great with EOS 5DII. It is lighter than a notebook.

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Technical Support / Re: Autofocus working conditions
« on: December 07, 2012, 05:31:15 AM »
Thanks Neuro for your answer.
I didn't really catch yet the 'baseline' concept, I need to work more to well understand.


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Contests / Re: Gura Gear Giveaway!
« on: December 07, 2012, 03:32:46 AM »
I want to win too!  ;D

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Technical Support / Autofocus working conditions
« on: December 06, 2012, 11:01:08 AM »
I have a candid question about autofocus functionality.

Majority of Autofocus are working with a lense at f:5.6.
Some (very) high cost DSLR can work with lenses at f:8.

What is the limiting factor?

Is it the AF system illumination? I'm not sure, because if the AF system can work with a f:5.6 lense at 0EV, it would be able to work with a f:8 lense with 1EV illumination...

Is it a question of Deth Of Field? At f:8 we have more DoF than at f:5.6 and then less precise error measurement inside the AF system.
But if the AF system is able to work with a 18mm f:5.6 at 15m distance, why wouldn't it be able to work with a 400m f:8 at 3m distance?

Thanks for your help.

12
Lenses / Re: Sigma 8-16mm f/4.5-5.6 DC HSM Tips Needed
« on: September 20, 2012, 07:59:56 AM »
I have this lense for 8 months now. I had already played with the Sigma 10-20 before but this 8-16 has a better construction quality, is far sharper and even wider (difference between 8 and 10mm is not only a marketing feature). I love this lense for landscape with a huge slightly cloudy (or even plane traces) blue sky. I use it also for some sport shoots, ski jump, mountain bike... with a wide landscape behind the subject. In that case, the guy you shoot has to be quite good because you have to be closed to him, and some time it can be dangerous ;)
An other interesting aspect is the perspective distorsion. For example, I shoot my son, 1m30 tall, with an adult, 1m80, 3-4m behind. The result is that my son looks twice taller than the adult with which he is discussing.
There are many funny things we can do with UWA, but it is absolutly not a general purpose lense and all shoots have to be carefully prepared...

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