LOG IN    OR   REGISTER TO FORUMS


FTM Focus - When do you use it?

FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses
Thread started 02 Feb 2010 (Tuesday) 19:13   
LIST NEARBY THREADS
 
PMan0
Hatchling
Joined Sep 2006
4 posts
[MORE/SHARE]

I own and love my Canon 70-200 F4 L but just started realizing that I don't use its FTM focus feature. When does this feature typically come in handy?

Where do you find yourself most often using it?

Am I missing out by not using it?

Post #1, Feb 02, 2010 19:13:10




LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as registered member)
tfd888
Goldmember
tfd888's Avatar
Joined Apr 2009
1,816 posts
CA, USA
[MORE/SHARE]

It's a very handy thing to have. For people that AF using the * button, they can just MF at anytime without having to flip the MF switch and instantly start AF if need be.

Post #2, Feb 02, 2010 19:15:40


Alexander R.O.
1D-Mark III ~1D-Mark II ~ 60D ~ 20D (Gripped)
(70-200mm L 2.8 IS) ~ (17-40mm L 4.0) (Sigma 24-70mm 2.8 EX DG Macro RIP) ~ (50mm 1.8 MKII) ~ (Alpex 35mm f/2.8 M42 mount) ~ (430EX II) ~ (Yongnuo YN-560 III)
My Websiteexternal link - My Blogexternal link
- My Flickrexternal link

LOG IN TO REPLY
crn3371
Cream of the Crop
crn3371's Avatar
Joined Mar 2005
7,198 posts
SoCal, USA
[MORE/SHARE]

I really don't think you're missing out on much. With the dim viewfinders and lousy focus screens on most dslr's manual focusing is kind of a pain. The only lens I manually focus with is my macro.

Post #3, Feb 02, 2010 19:20:16




LOG IN TO REPLY
PMan0
THREAD ­ STARTER
Hatchling
Joined Sep 2006
4 posts
[MORE/SHARE]

tfd888 wrote in post #9528311external link
It's a very handy thing to have. For people that AF using the * button, they can just MF at anytime without having to flip the MF switch and instantly start AF if need be.

Okay, so I do use the * buttom to AF - would I AF first with this button and then 'tweak' using the focus ring? Then lock exposure with half shutter press (recompose if necessary) and shoot?

Paul

Post #4, Feb 02, 2010 19:21:49




LOG IN TO REPLY
BlueTsunami
Goldmember
BlueTsunami's Avatar
Joined Sep 2008
1,021 posts
[MORE/SHARE]

PMan0 wrote in post #9528344external link
Okay, so I do use the * buttom to AF - would I AF first with this button and then 'tweak' using the focus ring? Then lock exposure with half shutter press (recompose if necessary) and shoot?

Paul

Exposure locking and Auto Focusing can be interchanged (as far as what goes first) but its usually the Manual Focusing that's done after Auto Focusing (one case being Focus and Recomposing, and adjusting the focus for the slight change in focus).

One may want to exposure lock first (like the sky... so half press the shutter first), Auto Focus on the subject (using whatever focus points), if the composition calls for the subject to be outside the AF points thats when you recompose and touch up via Manual Focus.

Post #5, Feb 02, 2010 19:27:17


Flickrexternal link

LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as registered member)
phreeky
Goldmember
Joined Oct 2007
3,471 posts
Australia
[MORE/SHARE]

On my lenses without full-time MF I've NEVER missed it. That's not to say that others don't find it useful, but I really do think people overstate its importance.

In fact I also think that of AF speed. Cheap consumer telephoto zooms have very little trouble tracking a jet zipping past in my experience. Ironically I think the slower focusing lenses are the ones that need full-time MF more as you can then easily twist the focus to near-enough and then AF quickly from there.

Post #6, Feb 02, 2010 19:31:10




LOG IN TO REPLY
bohdank
Cream of the Crop
bohdank's Avatar
Joined Jan 2008
14,060 posts
Montreal, Canada
[MORE/SHARE]

I only MF with my MF lenses or when shooting macro or near macro. The importance of MF override on USM lenses is highly overstated, imho.

Post #7, Feb 02, 2010 19:36:17


Bohdan - I may be, and probably am, completely wrong.
Gear List

Montreal Concert, Event and Portrait Photographerexternal link
Flickrexternal link

LOG IN TO REPLY
tfd888
Goldmember
tfd888's Avatar
Joined Apr 2009
1,816 posts
CA, USA
[MORE/SHARE]

PMan0 wrote in post #9528344external link
Okay, so I do use the * buttom to AF - would I AF first with this button and then 'tweak' using the focus ring? Then lock exposure with half shutter press (recompose if necessary) and shoot?

Paul

That or not even AF at all and MF the whole shot without ever touching the * button.

What I'm getting at is that it's very easy to switch back and forth between AF and MF if need be using this method or to correct the focus after AF'ing if need be without having to fumble for the switch in tough lighting conditions or take your eye away from the viewfinder.

Post #8, Feb 02, 2010 19:37:46


Alexander R.O.
1D-Mark III ~1D-Mark II ~ 60D ~ 20D (Gripped)
(70-200mm L 2.8 IS) ~ (17-40mm L 4.0) (Sigma 24-70mm 2.8 EX DG Macro RIP) ~ (50mm 1.8 MKII) ~ (Alpex 35mm f/2.8 M42 mount) ~ (430EX II) ~ (Yongnuo YN-560 III)
My Websiteexternal link - My Blogexternal link
- My Flickrexternal link

LOG IN TO REPLY
PMan
Member
Joined Sep 2006
83 posts
Oakville, Ontario
[MORE/SHARE]

tfd888 wrote in post #9528447external link
That or not even AF at all and MF the whole shot without ever touching the * button.

What I'm getting at is that it's very easy to switch back and forth between AF and MF if need be using this method or to correct the focus after AF'ing if need be without having to fumble for the switch in tough lighting conditions or take your eye away from the viewfinder.

This makes absolute sense - I've never tried it. Next time I get outside with my camera (a bit cold and snowing right now) I'll certainly test drive the FTM focus.

Paul

Post #9, Feb 02, 2010 19:54:08


Canon Rebel XT | Canon EF 70-200 f4L | Tamron 17-50 F2.8 XR DiII | Canon EF 50 f1.8 | Tamron 28-80 f3.5-5.6 | Canon Speedlite 430EX
Manfrotto 190XPROB + 804RC2 Head | Lowepro Orion Trekker II

LOG IN TO REPLY
KCMO ­ Al
Goldmember
KCMO Al's Avatar
Joined Sep 2006
1,114 posts
Kansas City, MO
[MORE/SHARE]

Air shows with my 100-400. I can zoom in to 100 to pick up the plane as it begins it's cross, then zoom out and compose and focus with the push/pull focus ring. Very handy and works very well. Also as stated, macro. I set the magnification I want, then use the focus rail to isolate what I want in focus. (I also use M exposure for both of these situations as well.)

Post #10, Feb 02, 2010 20:24:16


Film: Leica M-4, Elan 7E, Rolleiflex 2.8f, Pentax 645 -- Digital: Canon Pro-1, EOS 5D Mk III
EOS Lenses: Sigma 24-70 f2.8 EX - Canon EF 17-40 f4.0L - Canon EF 24-105 f4.0L - Canon EF 35 f1.4L USM - Canon EF100-400 f4.5-5.6L IS USM - Canon EF100 f2.8 Macro - Other stuff: MR 14EX - 430EX - 580EXII - ST-E2 - TC1.4x - TC-80N3

LOG IN TO REPLY
elader
Goldmember
elader's Avatar
Joined Nov 2005
2,374 posts
Maryland
[MORE/SHARE]

only when I have an extension tube on my 85 do I MF.

Post #11, Feb 02, 2010 20:32:12


Eric
FJR1300 rider
5D mkIII and 1D MkIII

16-35L | 24-105L | 70-200L f/2.8IS | 85 f/1.8 / 50 f.1,4

LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as registered member)
Sean
Goldmember
Sean's Avatar
Joined Apr 2008
1,714 posts
Ottawa, Ontario
[MORE/SHARE]

I have been using FTM on my 300 F4L IS with spectacular results. I have a feeling my AF Micro Adjustments are off, and just haven't re-brickwalled that combination to my satisfaction. Manual focus has been stellar however. Can't get enough of it.

Post #12, Feb 02, 2010 22:06:00


Canon 50D - 17-55mm F2.8 IS - 300mm F4L IS - 70-200mm F4L IS - 50mm F1.8 - 580EX II & 430EX - Full Gear Listing
Flickrexternal link - C&C Always welcome.

LOG IN TO REPLY
artyman
Cream of the Crop
artyman's Avatar
Joined Feb 2009
14,294 posts
Hampshire UK
[MORE/SHARE]

It's very useful for tracking or getting initial focus on birds hidden in foliage before hitting the AF button.

Post #13, Feb 03, 2010 05:07:43


Art that takes you there. http://www.artyman.co.​ukexternal link
Ken
Canon 7D, 350D, 15-85, 18-55, 75-300, Cosina 100 Macro, Sigma 120-300

LOG IN TO REPLY


LIST NEARBY THREADS
2,434 views & 0 likes for this thread
FTM Focus - When do you use it?
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses



NOT A MEMBER YET? CLICK HERE TO REGISTER TO FORUMS

CHANGE BODY TEXT SIZE FOR ALL THREAD PAGES
POWERED BY AMASS 1.0version 1.0
made in Finland
by Pekka Saarinen
for photography-on-the.net


SEND FEEDBACK TO STAFF  |  JUMP TO FORUM...  |  FORUM RULES


Spent 0.00211 for 4 database queries.
PAGE COMPLETED IN 0.02s
1020 guests, 822 members online
Simultaneous users record so far is 3341, that happened on Dec 11, 2014
Latest registered member is JohnHensley

COOKIES DISCLAIMER: By using this site you agree that some cookies will be stored on your browser. For unlogged users we store one session id cookie. For registered members we store (in addition to login session cookie) only cookies that are essential for required functionality, we do not store any personal tracking data in cookies or other browser's data storage methods.