I'm not an expert on long lens shots. But I do believe focal length is the main problem. Even a physically short and light mirror lens is hard to hold steady. But, the extra weight and length of a front heavy bazooka lens makes it even harder. Things add up.
I know a thing or two about vibrations. I am an old HiFi freak you see. Avoiding and controlling unwanted vibrations (read shakings) is the main thing when tweaking a turntable or constructing a loudspeaker. Controlling the vibrations is what Mr. Petersons trick is all about. "Gluing" your eye to the camera controls the vibrations inside the camera house, by adding more mass. The hand on top of the lens prevents vibrations travelling from the house, to the end of the lens, and back again. A bean bag is also much about controlling vibrations. I believe a hand on top of the lens would be useful when using a bean bag setup. Tim Mostly harmless (just plain Norwegian) Never underestimate the power of stupidity in large crowds (Very freely after Arthur C. Clarke, or some other clever guy) > -----Original Message----- > From: Jens Bladt [mailto:[EMAIL PROTECTED] > Sent: 29. mars 2006 21:53 > To: [email protected] > Subject: RE: Much improved (WAS: Testing a Tamron Adaptall 6.9 200-500mm > (not SP)) > > Tim, IMO it's not so much the lenght of the lens as how much it enlarges. > If > i move a 500mm lens 1mm, the focus point will "move" what is equal to > several feet. That's why long lenses need shorter shutter speeds. > Regards > Jens > > Jens Bladt > http://www.jensbladt.dk > > -----Oprindelig meddelelse----- > Fra: Tim Øsleby [mailto:[EMAIL PROTECTED] > Sendt: 27. marts 2006 23:40 > Til: [email protected] > Emne: RE: Much improved (WAS: Testing a Tamron Adaptall 6.9 200-500mm > (not SP)) > > > For Rob and other who has trouble getting into that page > ------------------------------------------------------------------------- > Proper Long Lens technique is not something I invented, but I was taught > long ago. This age old technique assures the sharpest possible image when > using any lens that attaches to a tripod via its tripod collar.Used with > proper Handholding Technique, you will capture the sharpest possible > images! > > First and foremost -you must rest your hand on the lens barrel above the > tripod head! (you can also put your hand on the bottom of the lens barrel > if > you're pointing the lens down) You rest your hand on the lens just like > you'd rest it in your lap. Vibrations are what causes images to be out of > focus, vibrations that normally start at the camera. These vibrations > travel > as a wave to the front element and if they are not stopped, they travel > back > through the lens to the film plane, causing images to be out of focus. The > simple resting of a hand on the lens barrel stops this wave before it > reaches the front. No, a bean bag resting in the place of the hand is not > a > good idea for many reasons. > > Second - use an eyecup and press you eye against it! This again is another > way to minimize or eliminate any vibration that might start with the > taking > of the photograph. If you can't remember to press against the eyecup like > I > did in the beginning, put a sticky note on the back of the camera to > remind > you. > > Third - roll you finger when firing! Too many photographers poke at their > shutter release to fire the camera, causing all sorts of unwanted > movement. > You want to rest your finger on the shutter release at all times and then > slightly roll it unto the shutter release to actually fire the camera. > This > takes practice, but makes a big difference! > > Fourth - practice, practice, practice! You can't expect to have this > become > second nature or remain second nature if you don't do it all the time. > Whether shooting for real or just staying in shape, take the gear out and > practice so you don't have to think about it when you're out shooting. > By Moose Patterson > -------------------------------------------------------------------------- > This might be regular shooting procedure for many PDML'ers, but for me it > was helpful. > > Tim > Mostly harmless (just plain Norwegian) > > Never underestimate the power of stupidity in large crowds > (Very freely after Arthur C. Clarke, or some other clever guy) > > > -----Original Message----- > > From: Rob Studdert [mailto:[EMAIL PROTECTED] > > Sent: 27. mars 2006 23:32 > > To: [email protected] > > Subject: RE: Much improved (WAS: Testing a Tamron Adaptall 6.9 200-500mm > > (not SP)) > > > > On 27 Mar 2006 at 21:41, Tim Øsleby wrote: > > > > > Does your lens have a tripod mount? If so, have a look at this > > > http://www.moosepeterson.com/techtips/longlens.html > > > Very good tips. > > > > That site locks up my Firefox Browser. > > > > > > Rob Studdert > > HURSTVILLE AUSTRALIA > > Tel +61-2-9554-4110 > > UTC(GMT) +10 Hours > > [EMAIL PROTECTED] > > http://members.ozemail.com.au/~distudio/publications/ > > Pentax user since 1986, PDMLer since 1998 > > > > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.385 / Virus Database: 268.3.2/293 - Release Date: 03/26/2006 > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.1.385 / Virus Database: 268.3.3/296 - Release Date: 03/29/2006 >
