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What do you use the 12mm lense for? What distance?

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Eyepieces are NOT USED by distance. You divide the focal length of the telescope by the number on the eyepiece... this gives the magnification.

For example a 900mm telescope with a 10mm eyepiece = 90 power

Posted on Jan 04, 2011

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Posted on Jan 02, 2017

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My 60d finding ERR 01 with my tokina 12-24mm lenses. I try to clean the contact but after a few shoot the problem remain


I have the exact same problem, it's the aperture flex cable which have a design flaw. At 12mm the flex is stretched at maximum and over the years loses its flexibility and breaks. Mine works fine from 24 to 15mm. Below 15 the camera always reports err01. All flex cables in the tokina are welded -IMHO you need to take it to a professional.

Jun 20, 2011 | Tokina 12-24mm /f4.0 for Canon

2 Answers

I have a minolta 7000i non-digital camera with several nice lenses. Are any of these lenses compatible with any new digital cameras?


I am pretty sure that your lenses are just fine for your Digital camera(Minolta or Sony only) as they have the same lens mount. I you choose a KM5 or KM7 digital cameras your lenses will be longer by a factor of 1.4x, same goes for Sony cameras except A850 and A900. They will give you the same magnification ratio as your 7000. Minolta was sold to Sony several years ago, and they have been building a great reputation since. Your AF maxxum lenses will work great on any KM or Sony camera(ADI is available on distance integrated Minolta maxxum lenses only. You can tell by looking at a lens marking which will say "D" if it is compatible with distance integration). I find distance integration an extra not a necessity. If you have some great glass that you love and hold dear, then it would be a great idea to buy Sony. Note that another answer by miket756 is mostly wrong. Yes your lenses will get longer on APS sized sensors, but a 28 mm will never become a 150mm equivalent(thats just stupid). It will look more like 40-50mm on APS-C camera. If you got 2000-2700$ for Alpha850 or Alpha900 than your lenses will retain their mag factors. Good luck.

Oct 26, 2009 | Minolta Maxxum 7000 35mm SLR Camera

1 Answer

D90 won't autofocus at distance


Mine seems fine. The only other thing I would think to check is the focus lock is off and the focus area setting.

Apr 28, 2009 | Nikon D90 Digital Camera with 18-105mm...

1 Answer

Distance scale does not move on canon efs 17-85mm lens


Yes, this is normal. Some zoom-lenses adjust the focus when zooming, to always keep the subject in focus. Those tends to be the more expensive lenses.
So you don't have to worry, nothing is wrong with your lens.
/Chris

Jan 10, 2009 | Canon EF-S 17-85MM F/4-5.6 IS USM Lens

1 Answer

Bit is stuck in btd142 driver


the makita impact drivers are picky about the bit that you use. if you use a single sided bit you have to make sure the distance between the channel and the end is 9mm (3/8) and if you're using a double sided bit you have to make sure the distance from tip to channel is 12mm (15/32)

try using a 1/4" wrench on the bit in reverse while pulling the collar back. if that doesnt work, tap the tip of the bit with a hammer with the collar pulled back

Nov 29, 2008 | Makita 18V LXT Lithium - Ion Cordless...

1 Answer

PS2 Slim Line Prblem !!!


Lenses adjust their distance on ur disc, the harder they can read it, the nearer it goes on the disc...can it still read other discs? if it wont, then ur lens is damaged because of too much scratches, and if it does happen, u have no other choice but to repalce lenses...and by the way, there's an adjustment under these lenses that determines its distance on the disc, but before adjusting it, you should know what ur doing, coz it miht damage the lenses, again....

May 07, 2008 | Sony PlayStation 2 Slimline Console

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Jammed Lense)


Make sure the lense is not bent. If so, gently straighten it. This worked with mine.

Nov 28, 2007 | HP Photosmart R717 Digital Camera

1 Answer

Zoom Problem


There are two components to a camera lense. One adjusts the final lense distance from the CCD imaging chip the other adjusts the distance between the lenses in the assembly (which zooms the image in and out). It sounds like something inside the lense came loose and when you zoom the lense the focal lense is moving with the rest. The lense will probably have to be replaced if it cannot be taken apart. Odds are something is broken inside anyway. This could be something you might be capable of, I have no way of knowing. If you do not think you are up to the task, have a reputable repair shop do it. Cost should not be excessive. I would think less than $100 US plus the cost of the part. Good luck.

Jun 16, 2006 | Samsung VP-D103i Mini DV Digital Camcorder

1 Answer

Wide Angle Lenses


wide angle lens aka fish-eye lens, means only the centre of your photo is clearly focused - especially in long distance scenery shots.

Sep 13, 2005 | Kodak DC290 Zoom Digital Camera

1 Answer

Accessories lenses


Olympus offers the following add-on lens accessory options: MCON-35 Macro Extension Lens (equivalent to 1/4 life size, subject size that will fill the frame is approximately 1.4" x 1.9" f2.4 Tele/f2.0 Wide, 72mm filter size) minimum focusing distance - 4.75 inches. WCON-08B Wide Extension Lens (equivalent to 28mm f2.0 in 35mm photography, 105mm filter size) minimum focusing distance - 3.6 inches TCON-14B 1.45X Tele Extension Lens (equivalent to 200mm f2.4 in 35mm photography, 86mm filter size-tentative) minimum focusing distance -1 ft. TCON-300S Tele Extension Lens (equivalent to 420mm f2.8 in 35mm photography, 49mm filter size) minimum focusing distance - minimum focusing distance - 3.9 ft.

Aug 31, 2005 | Olympus Camedia E-20N Digital Camera

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