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where do u focus in ULTRA WIDE angle lens
Hi, I recently watched below video on You Tube on how one can set 2-3 remote camera's with PW and cable release and fire remote camera's from hand camera from over a distance. http://www.youtube.com/watch?v=v3ZPes07oXY Taking inspiration I wanted to implement this in wedding Photography to get a look of bride walking down the aisle. So I put 7D on a Joby tripod with a Tokina 11-16 at 16mm with setting of F4, ISO 500 @ 125 /sec, Have set the camera on servo with zone focus points selected. Hoping that once the bride walks, I will start taking shots from low angle while shooting with another camera and both firing through PW. Concerns :- - Camera was unable to focus on the bride on its own. - Shots have not come sharp.mostly out of focus Guess I fail to understand the meaning of "WIDE ANGLE LENS usually have every THING in FOCUS" ..really how ? May be I should have put the camera in Auto Intelligent Mode where it would automatically pick up closest point or may be focus point to -Auto select , pick anything from 19AF points so that if bride is first on in line of sight then she gets picked up and with serva mode on camera will keep focusing... I this right or am I doing something wrong, Luckily, because I was doing this for the first time so didn't trust the technique and had my back up shots whcih have come "oh la la la"..bride actually ended up saying "I want2 re marry so that you take more pictures of me"lol.... link to album here http://www.facebook.com/media/set/?set= … 400&type=3 But still have a wedding coming next week and need to try these remote camera shots Can someone help? www.RobinSaini.com Mar 26 13 12:05 pm Link With focus on manual at 20 ft that should get you from 7ft to infinity Mar 26 13 12:20 pm Link The way zone focus is works is you set the focus to a predetermined distance using manual focus. Lets say 15 ft in the case of the camera, focal length and aperture you've stated. Which give you a zone of focus of about 7 feet in front of the point of focus and infinity behind it. Note Zone focus is meant to used for getting shots that make nice 8x10 or 11x14 prints and may not stand up to pixel peaking at 100% Mar 26 13 12:26 pm Link RobinSaini wrote: I think that in servo, with all AF points active, the camera can select any of them, even outside of the zone you want. There is at least one option that works this way. Mar 26 13 12:30 pm Link Yeah, I would just zone focus it. I don't own that lens, but similar ultrawides that I have used hit infinity at about 6-10 feet. With the 7D you can raise the ISO a little, so I would probably bump it to 800 and lower the shutter speed slightly, to get yourself a 5.6 or so aperture ... you probably don't want to change enough to hit f/8. Then I would set focus for the furthest distance before the lens hits infinity, and hope for the best. That pretty much guarantees that the bride will walk out of focus, but it also means that she'll walk into focus, no matter what. If you're angled up and using AF, there is a good chance that one (or many) of the focusing points will be over a blank subject. And while being 'a little off' isn't a big deal with a WA lens, having a blank focusing zone will cause the lens to rack focus back and forth. Mar 26 13 12:41 pm Link Example  15mm lens at F 4.5 on Leica M8 APS-H sensor Focus set to about 7 feet (Zone of focus 3.55 to 253 ft Just leaned over and held the camera just a bit more then a foot off the ground and pressed the shutter. Mar 26 13 12:44 pm Link A smaller aperture will give you more DOF, and with a lens such as this you can get a ton of extra DOF by trying to get to perhaps f8. Keep in mind that with a lens that wide, which is also on a tripod, you could probably get away with even 1/100th and not have much motion blur. Turn the ISO up and try to get f8. At that point, I'd guess that you may have virtually everything you could possibly need in focus. I was always satisfied with 7d images up to 3200 iso, and if the shot can only be obtained at those iso levels, it's still better than no shot at all. Mar 26 13 12:47 pm Link |
