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Messages - justsomedude

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271
Sports / Re: contest - sports
« on: October 10, 2011, 04:52:29 PM »
soccer contest - kids try hard


dickgrafix... You should post your photo up in the official contest thread so your entry is considered...

http://www.canonrumors.com/forum/index.php/topic,1794.0.html

Best of luck!

272
Lens Giveaway Contest / Re: *Contest* Event Photography - Post here.
« on: October 10, 2011, 12:23:50 AM »
Steampunk Dance Party


273
Lens Giveaway Contest / Re: *Contest* Creative Lighting - Post Here.
« on: October 10, 2011, 12:23:15 AM »

274
Lens Giveaway Contest / Re: *Contest* Astrophotography - Post Here.
« on: October 10, 2011, 12:22:17 AM »

275
Lens Giveaway Contest / Re: *Contest* Action & Sports - Post Here.
« on: October 10, 2011, 12:20:57 AM »

276
Lens Giveaway Contest / Re: *Contest* People - Post Here.
« on: October 10, 2011, 12:19:29 AM »

277
Lens Giveaway Contest / Re: Contest Announcement!
« on: October 10, 2011, 12:18:46 AM »
However, the community does seems very nice here. I may just have to stick around.  ;D

The community here simply rules... I've gotten a lot of help with my camera issues here in the past, and keep coming back.  Join in some threads - trust me, you'll like the people here.

:)

278
Sports / Re: Cars cars cars (and some bikes)
« on: August 28, 2011, 08:03:23 PM »
American Levi Leipheimer whips around Civic Center Park in Denver, Colorado on his way to victory in the inaugural US Pro Cycling Challenge...


279
Sports / Re: Cars cars cars (and some bikes)
« on: August 25, 2011, 04:08:07 PM »
justsomedude I have a question. How much does the 7D AF help you in capturing these shots(supposed you have a decent panning technique)?
I'm asking because with my 400d it is quite hard to get lots of in focus shots.. I usually put focus to manual and wait for the bike to come, else I may lose the shot..


Askiskev,

Unfortunately, I don't think there is a straightforward answer to your question.  But if I had to answer yes or no, I'd say "no"...  the 7D's AF alone is not as big a factor as some people might think for these types of shots.  However, there are other aspects of the 7D that do provide a little advantage over other camera bodies (I'll get to that later).

Don't get me wrong, the 7D AIservo AF is a help, but only a small factor in the grand scheme of shooting this kind of shot at 1/160th.  The problem is at these slow shutter speeds (1/160th is "slow" for a racing motorcycle), the rider is moving and his fairings are vibrating/shaking violently due to wind/engine&road vibrations - so getting the entire bike/rider to be crisp is difficult (and sometimes just takes luck).  I've tried shooting as low as 1/125 and 1/100, but my keeper rate becomes atrocious.  1/160th is about as slow as I can go (in corners) while getting a somewhat decent keeper rate, and getting the entire bike to be sharp.  I have to bump the shutter speed up on main straights as the bike speeds are much higher.

All things considered, I'd say panning technique is priority #1 for shooting any type of shot like this, and always will be.  Even when my focus is spot on, most of my throw-aways are due to camera shake (translation: operator error).  :)  After panning technique, I think optics are the #2 consideration for panning shots, and they play a bigger role than camera body or AF type.  Shooting with a fast lens with image stabilization (in a panning mode) can significantly increase keeper rates.  Also, keep in mind that teleconverters -  while giving you more reach - will actually compromise image quality.  You also lose two stops of light with most TCs. 

I shoot with a 70-200mm and use a 1.4x TC if I really have to.  In a perfect world (where money grew on trees), I'd be shooting 300mm or 400mm f/2.8L IS lenses, like the two just featured on the home page.  Unfortunately, I don't have that kinda cash.  :P

Lastly, there is definitely a point where camera body comes into play, but I don't think the AF processing is necessarily the key benefit.  In my mind, the advantage to the 7D is the much larger pentaprism, which is actually larger than the 5D MKII's pentaprism (see pentaprism info in this review).  While processing certainly helps for tracking, it's of my opinion that this large pentaprism is a huge help to the 7D's AF system.  Either way, I'd put the AF system as the lowest priority with respect to obtaining higher keeper rates for motorsports photography (that is, in a 400d to 7D comparison... obviously AF is a factor if we're comparing a 7D to a powershot!). 

Remember, people have been taking these kinds of photos for years - long before digital AF came about... and somehow they were able to get tack sharp shots.  ;)  If you are able to get good crisp shots with pre-setting focus at a fixed distance, that means you're really dialing your panning technique down.  Ultimately, if you upgrade to a higher-end camera, you'll be well ahead of the curve for handling the AF features that come with it.

I hope this helps!

280
Sports / Re: Cars cars cars (and some bikes)
« on: August 10, 2011, 09:38:15 PM »
Impressive shot dude!


Thanks akiskev!  Here's another from the same corner...



July 31, 2011
High Plains Raceway, Colorado

f/6.3 100ISO 1/160s 100mm
70-200mm f/2.8 IS II and 1.4x TC extender
7D Body

281
Sports / Re: Cars cars cars (and some bikes)
« on: August 02, 2011, 04:42:30 PM »


July 31, 2011
High Plains Raceway, Colorado

f/7.1 100ISO 1/160s 135mm
70-200mm f/2.8 IS II and 1.4x TC extender
7D Body

282
Sports / Re: Cars cars cars (and some bikes)
« on: July 31, 2011, 09:27:37 PM »


Shot July 31, 2011
High Plains Raceway, Colorado

f/4 100ISO 1/160s 165mm
70-200mm f/2.8 IS II and 1.4x TC extender
7D Body

283
Contests / Re: Holga Giveaway
« on: July 25, 2011, 05:56:53 PM »
NICE!  Count me in on the contest, please!

 8)

284
EOS Bodies / Re: 7D focusing question??
« on: June 13, 2011, 05:59:00 PM »
Okay. I was confused too. Because I was also thinking: "isn't that what autofocus does anyway?"

Glad you clarified that. I'm a big fan of the Tokina 11-16. At the risk of unleashing a firestorm of Canon lens fetishists, I have to say I think it's a better lens than the Canon 10-22. I'm going to have to try the center-point focus now. I guess usually, with a lens that wide, I haven't found focus to be as critical, so haven't really noticed the problem. Now, I'm curious.


Unfocused... I totally agree, and feel the Tokina 11-16mm is far superior to the Canon 10-22mm.  I've owned both, and after comparing the CA and clarity between the two, I found that the Canon was no match for the Tokina (at least on my 40D).  I'm hoping the replacement lens brings similar performance to my 7D.

Regarding the focus issues I had, check some samples on my website.  Look for "Tokina" in the title of the problem images.

285
EOS Bodies / Re: 7D focusing question??
« on: June 13, 2011, 05:14:42 PM »
Gee, you mean Tokina has discovered the normal behavior of automatic AF point selection?   Regarding Automatic AF point selection Mode, Canon states, "When working with non-moving subjects in the One-Shot AF mode, the EOS 7D starts with all 19 AF points active. The camera will then use the point or points which “see” the nearest subject with adequate detail."  I'm not sure what Tokina thinks the problem is here...


Neuro,

Maybe I should've been clearer in my original post, but the problem I experienced was in manual AF point selection mode.  Manually selecting any of the outside AF points would result in no-focus, and the lens would automatically focus on whatever was nearest to it.  So, even if I had selected a distant object with an outside focus point - if something was closer - the lens would focus on that.

That, to me, is a problem - but can be overcome as long as the user is aware of the limitation.

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