August 31, 2014, 02:52:52 AM

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Messages - ahab1372

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46
I agree, nice job. Thanks for sharing.

47
I haven't tried in a while, but I believe Auto ISO will be set to 400 when using on camera flash. That is probably not what you want it to do in this case.

48
Technical Support / Re: AFMA 7D with Sigma 150-500mm.
« on: March 17, 2014, 06:56:44 PM »
+1 on Manual mode, I now prefer it over the semi-manual mode.

I also noticed that FoCal results can be very different if you have the RGB analysis enabled - I went back to the old method (RGB disabled). RGB analysis is supposed to be better, but I have yet to verify that against real world tests (with a DIY lens-align type set-up)

49
EOS Bodies - For Video / Re: Understanding Video Autofocus
« on: March 16, 2014, 01:18:49 PM »
Maybe the camera changes shutter speed and/or ISO during the autofocus.
To test for the former, you could film something moving at constant speed, like a slowly rotating fan, and see if the amount of motion blur changes in the frames that were taken during the autofocus. It would probably take some trial and error to get the rotational speed right.

50
btw there is a setting in the camera that let's it number files continuously, regardless of a card being inserted with files on it.

No there isn't. Look at page 156 of your manual, think about it, if it could do that then you could end up with two images with the same number in the same folder shot by different cameras, that just wouldn't work.
You are right, I remembered it wrong. For both options it says "... may continue..."

51
I made a quick experiment. I switched cards and now the image number jumped to more than 900.
So there is a strong possibility it is my doing. Anyway this has made me to try and check the camera as much as possible. Of course I did not test everything but I tested a lot. It is just fine. It is behaving exactly as my first one.

So I do not think there is a reason for return.
Another positive hint: The clock was unset.

So I will keep it  :)

Thank you for your responses.

P.S
btw there is a setting in the camera that let's it number files continuously, regardless of a card being inserted with files on it.

52
Reviews / Re: Why the DxO bashing?
« on: March 12, 2014, 12:15:32 AM »
It's his second alias in three months. He was mikea in December. Edward (eml58) gave him a good beating and off he went. Reappeard as Nalle Puh (Swedish for Winnie the Pooh) and apparently he's gone again. Can't say I'll miss him. But on the other hand, he does stur up some good discussions  :P
I'm pretty sure I have seen him with yet another alias a while ago. That makes three at least.

53
Photography Technique / Re: Can you share your workflow?
« on: March 12, 2014, 12:10:25 AM »

If I import straight to Aperture, there is no good way to back up the files. Or if there is, I have not discovered it. Aperture also clutters the SSD. There is no way to have everything available. There is also the possibility to have the RAWs on external drives, but then I have nothing on the Mac I carry in my camera bag.
TimeMachine works fine for me to a NAS. In addition to that, I back up to the same NAS with rsync every now and then using hardlinks for incremental backups.

Aperture also has Vaults for backing up images - but I have never used that.

54
Canon General / Re: Top Gear
« on: March 07, 2014, 05:12:17 PM »
How hard can it be?  ;)

55
EOS Bodies / Re: Full Frame Vs Crop Sensor
« on: March 04, 2014, 11:09:36 AM »

My point is that the article deals with pure theory of one aspect, sets up an experiment to prove that theory, ( correctly ) but then does nothing to put this into practical context, creating the real possibility of leaving someone who is new to photography, but trying to learn, more confused about what they find in practice.

That's all. There are people who post on CR who are better at putting pure physics into practical context.
True, someone new to photography might wonder "what's the point?". I haven't read a lot on LL, but my feel is that that is true for most of their articles.

56
EOS Bodies / Re: Full Frame Vs Crop Sensor
« on: March 04, 2014, 09:52:11 AM »

A lot of people seem to have difficulty grasping this concept. Including some who think they know better in this thread.  ;D   Its shown quite well in this article.

http://www.luminous-landscape.com/tutorials/dof2.shtml

Note that no where in the luminous landscape article did the guy refer to subject isolation.
DOF and subject isolation (or background blur - or do you mean something else?) are not necessarily the same.
Taking pictures with a short focal length and short subject distance vs with a long focal length and longer subject distance (for the same framing, using the same camera and aperture) results in the same dof, but the latter will give you a much blurrier background.

How about - "For the same magnification of the area in focus (different lenses, different distances), longer focal length at the same aperture will give you same DoF and more background magnification".
Yes. Or, in simple statements, which I can remember easier :) :
The longer the lens at the same f, the more blur, but same dof.
The smaller the f at the same mm, the more blur, and less dof.
(assuming the same framing)

57
5D MK III Sample Images / Re: 5D MK III Images
« on: March 04, 2014, 01:18:42 AM »

Peregrine Falcon (Falco peregrinus) by Robin SS Lee, on Flickr

Stunner, absolute stunner.

The Images of the Hawk ?? trying to lift the fish out of the water on your flicker site, just as good.

Welcome to CR.

I also like this image, but it almost seems like the light illuminating the Falcon, is a cooler color temperature than the light that should have been on it, given the background.
I think that's just the color of the bird. Or are you suggesting the photographer brought his lighting equipment for the shot?

58
Software & Accessories / Re: Louis Vuitton bag
« on: March 03, 2014, 10:21:29 PM »

This is a "must have" bag, but I'm going to wait for BIGVALUESINC special sale ;D
Or the silk market if you happen to travel to China antime soon ...
do you know if shanghai has a place the same as the silk market?
dont feel like a special trip to beijing just to go shopping
Not sure, but I know someone who I can ask tonight, so don't buy the tickets just yet  :D

59
Software & Accessories / Re: Louis Vuitton bag
« on: March 03, 2014, 10:17:06 PM »

This is a "must have" bag, but I'm going to wait for BIGVALUESINC special sale ;D
Or the silk market if you happen to travel to China antime soon ...

60
EOS Bodies / Re: Full Frame Vs Crop Sensor
« on: March 03, 2014, 10:07:30 PM »

A lot of people seem to have difficulty grasping this concept. Including some who think they know better in this thread.  ;D   Its shown quite well in this article.

http://www.luminous-landscape.com/tutorials/dof2.shtml

Note that no where in the luminous landscape article did the guy refer to subject isolation.
DOF and subject isolation (or background blur - or do you mean something else?) are not necessarily the same.
Taking pictures with a short focal length and short subject distance vs with a long focal length and longer subject distance (for the same framing, using the same camera and aperture) results in the same dof, but the latter will give you a much blurrier background.

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