November 20, 2014, 11:37:41 PM

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Messages - sanj

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16
EOS Bodies - For Stills / Re: Some questions about autofocus speed
« on: November 07, 2014, 01:55:40 AM »
I’ve been lurking here for quite a while and have been learning a great deal from these discussions.  I have a few questions about autofocus speed and the relative importance of the lens versus the camera body.  I shoot a 7D and I’m primarily using one of two lenses – a Canon 300mm f/4 L with or without a Canon 1.4X TC III or a Sigma 150 mm f/2.8 macro with or without a Sigma 1.4X TC.  I shoot mostly wildlife, primarily birds, and macro, especially butterflies, dragonflies, and other smallish nature subjects.  I shoot about 50% hand-held, about 50% monopod mounted and I almost always use the central autofocus spot on static subjects.  My vision is not very good so I rely almost exclusively on the camera’s ability to autofocus my subject quickly and accurately.   

Nothing wrong with relying on camera's AF. That is what it is for! And when shooting 10fps there is no way to rely on the eye to judge focus.


1.   I have a sense (but no real measurements) that the addition of the TC to either lens slightly slows autofocus compared to the “naked” lens.  Under identical shot conditions and lens/camera settings, is there a reason to expect that addition of the TC would slow autofocus lock?  Maybe it is just my imagination?

Yes it does, Neuro has given you the math.


2.   I’m thinking about upgrading to a 7DII next year.  Will the new and improved autofocus system in the 7DII make a difference in improving the speed of autofocus acquisition with my current lenses?  In other words, given identical shot conditions and camera/lens setting, will the 7DII be faster to autofocus than the 7D or is speed going to be limited by the lens system I have in use?

Faster maybe. How much faster? Very little. But overall it will be much better focusing device: Tracking, spread out better focus points etc.

3.   I have heard it said that the image stabilization (IS) system actually slows down autofocus lock.  One suggestion I have heard (or read somewhere) is to turn off IS when shooting birds-in-flight to allow the camera to lock focus more quickly.  Is there any truth to this?

Don't think so. But even if it was, it would be so little that it does not matter.
All are unscientific personal thoughts. :)


Thanks for your help.           

17
EOS Bodies - For Stills / Re: 7d mk2 seems very soft?
« on: November 07, 2014, 01:14:43 AM »
Oh I just checked the replies and found you have figured it out. Great!

18
EOS Bodies - For Stills / Re: 7d mk2 seems very soft?
« on: November 07, 2014, 01:13:42 AM »
The photo you post is indeed soft BUT it is so soft that I can't believe it is the camera. There is something else wrong which am sure you will figure out eventually. This is not a FF vs crop issue. AFMA or processing seems to be the issue.

19
EOS Bodies / Re: Canon 7D Mark II Owners first thoughts
« on: November 07, 2014, 01:06:42 AM »
Here is another one with the 24 f2.8 IS on the 7D2. That electronic level in the viewfinder is my new favorite thing. Shame I don't have that on my "landscape" camera. Once again I feel the lens has a very neutral field of view on this camera. Handheld, f8, 1/50th ISO 200. Higher ISO versions of this scene had issues with the DR which was a bit beyond the cameras natural range. At ISO 6400 it was pretty mushy all over.

On your landscape camera you will have a bubble on your tripod. Or electronic level finder in live view. Just saying. :)

20
I am not putting down the camera, just saying that it is not for me as the difference between FF and this is vast. And since it will always be like that I will continue using FF till I can afford to. I believe now that the only reason to go crop is budget.

21
To MY eyes I see about half stop improvement. This is what I had expected.

But focus, build, buffer, viewfinder and such exceed my expectations.

Wish there was a bit more improvement in sensor. I doubt I will buy this and continue with FF. I was tempted to get this when announced but using 7D earlier has left such bad memories…

22
Lenses / Re: First Image of the EF 100-400 f/4.5-5.6L IS II Lens
« on: November 06, 2014, 08:26:27 AM »
Looks nice

23
EOS Bodies / Re: what is the body you want to see canon release next ?
« on: November 06, 2014, 04:33:58 AM »
I'm with you Sanj.
I'm drooling over the Pentax 645z and the sony A7r.
So they are out there, get with the program Canon.

Me too. I check exactly both the cameras you mention often on internet. But do not want have several systems in my bag. I already am waiting to sell my XE2 in favor or A7r or A7s but have not done so as the built in flash is important for me when am out with friends at night.

24
EOS Bodies / Re: Canon 7D Mark II - DXOMark Review
« on: November 06, 2014, 04:30:29 AM »
I don't like the fact they don't reveal their methodology, but here is the review

For once, this is essentially in favor of Canon - with the 7d2 as a wildlife camera, who cares about low iso dr? If you wan to shoot sitting ducks you can just use the 6d for about the same price.

As a wildlife shooter, I'd consider low ISO dynamic range important. I'd also take the 6D over any crop camera by any brand for wildlife.  ;)

How differently you and I see wildlife photography! I would not consider low ISO dynamic range important and would not choose 6D over 7D for most brand of wildlife. The wildlife that I shoot is very active requiring high ISO and excellent focus to get the shot.

25
EOS Bodies / Re: what is the body you want to see canon release next ?
« on: November 06, 2014, 03:53:38 AM »
I want a 40mp with killer DR at 100 ISO for landscapes. Yeah.

26
EOS Bodies - For Stills / Re: 1dc = Free beer
« on: November 05, 2014, 11:06:36 PM »
hahahaha

27
Canon General / Re: Just another day at work.
« on: November 05, 2014, 01:22:26 PM »
Dear friend , Mr.. sanj
She might be Miss Neetu Chanda, Bollywood movie  star.
Surapon

Surapon, no that is not Neetu. It is Sunny Leone. And do you know Neetu personally? Asking because she is my friend..

Dear friend sanj.
Sorry, I do not Know Miss Neetu, But Just watch her movies and fell in love with her---Ha, Ha, Ha.
You are the Best Natural Portrait Photographer, Who can create the best Picture of the most beautiful girls in the world.
Keep on Posting, Sir---And You will make our days
Surapon

You are kind.

28
EOS Bodies - For Stills / Re: 1dc = Free beer
« on: November 05, 2014, 01:21:21 PM »
Hey!!   :D   I bet sanj has wicked martial arts skills that we aren't aware of and so he isn't worried at all.

Plus, he hangs out and spars with Jackie Chan and Jason Statham all the time too.

Now you know why he has so many awesome pictures of super hot models, he's just that great!  Stay cool sanj!!   8)

Hahahaha. Sweet.

29
EOS Bodies - For Stills / Re: 1dc = Free beer
« on: November 05, 2014, 01:09:06 PM »
Sanj, how come someone who operates a 1DC... a camera that nears perfection... doesn't take the small effort needed to put a simple snapshot upright?  :o

You are so right. I got lazy.

30
The 5d3 with 24-105 IS would suit ME much better and I believe is more versatile.

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