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Terminology whats the differance between 1:- wide angle zoom 2:- high power zoom 3:- close up zoom

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Wide angle is short focal length.
High Power is long focal length.
Close up is macro.

Posted on Feb 02, 2009

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How do I get the shutter to open and close


If the Lens doesn't go in and out, The front covers will not open, Sound like the lens is damaged, Not cost efictive to repair.

Oct 14, 2014 | Nikon COOLPIX S4100 14 MP Digital Camera...

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Why am I getting pictures with curved edges edges


Hi Ian
What you are suffering is something called barrel distortion which causes images to appear spherised or "inflated". Barrel distortion is associated with wide angle lenses and typically occurs at the wide end of a zoom lens. The use of converters often amplifies the effect. It is most visible in images with perfectly straight lines, especially when they are close to the edge of the image frame

the way to solve it is to try not use the end of the of the zoom of your lens. Above 20 mm you should be fine. If this is not possible then you can correct the effect in programmes like Photoshop

Hope this helps

May 09, 2014 | Sony Cameras

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Focus out problem in canon 50d while using 24-70mm lens?


If by a "normal" lens, you mean a 35mm or 50mm fixed focal length - often called "prime" lens, that is to be expected. The additional and internal rotating optical elements all contribute to loss of clarity, color loss, and increased chromatic aberration that starts to become noticeable when compared to use of a prime lens. It's a trade off; less number of lenses to carry and lower cost when using wide angle zoom lenses as opposed to a prime lens for even just a few of the focal lengths offered by the wide angle zoom types.

You can minimize the unwanted effects by staying away from both the extreme wide angle and zoom focal lengths as well as the widest aperture settings. If you can stay 2 or 3 stops smaller from wide open, you can limit these destractions from your pictures. This is recommended advice for nearly every lens: Keep away from the extremes.

Good luck!

Jan 08, 2012 | Canon 24-70mm f/2.8 Lens

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I need a manual for AF 35-70mm f2.8 D zoom nikkor - no idea how to use this lens.


i was not able to find a manual - this review may help http://www.kenrockwell.com/nikon/3570.htm
The lens consists of
  1. Zoom
  2. Focus
  3. Aperture
  4. Macro
1) Zoom - this is by push pull - so you push the lens out to wide angle 2) To switch to manual focus - will need to be done on the camera and then you can use the front control ring to focus - 4) also you can use the button to switch to macro mode - BUT only with the Zoom at 35mm - lens fully extended 3) You have an aperture range of 2.8 - 22 this varies the amount of light allowed into the lens - 2.8 is the most light - F4 to F5.6 to F8 - each change halfs the light allowed in - so changing from F4 to F5.6 half the light

Mar 29, 2010 | Nikon 35-70mm f/2.8D AF Zoom-Nikkor Lens

1 Answer

Is the Vivitar 21mm 3.8 a good lens for Nikon?


For what you can buy them for these days, they're excellent and were usually made by Kiron who made excellent lenses in their own name and also for Tokina and Vivitar.

But unless you're using a full frame Nikon (i.e. 35mm or the full frame digital professional bodies) then it's nothing special as it has the same angle of view as a 31.5mm lens (close enough to a 28mm for discussion purposes). A 28mm f3.8 offers no advantage over many of the kit zoom lenses which come with many Nikons and with the huge advances in optical design since the 21mm Vivitar was made are likely to be optically superior.

On balance, if your Nikon is a 35mm film SLR or a full frame sensor version then go for it as it's a fantastic super-wide angle lens. With anything else, it simply doesn't make much sense. What it will still do though is offer fantastic depth of field which will be lacking in relative terms on a 28mm lens designed for APS-C sensors.

Feb 23, 2010 | Vivitar Super Wide Angle 19mm f/3.8 Manual...

1 Answer

I have a Tokina lens which says SD 35-200mm 1:4-5.6. The serial # is 8508870. What can you tell me about it, like what camera brand it fits?


Hello. The SD stands for Super Low Dispersion glass. It's a type of glass which is supposed to correct a lot of common light-transmission errors that naturally occur with optics used in this manner. All companies use "special" or "proprietary" methods of producing their respective high-quality lenses. The 35-200 tells you the focal length(how much zoom capability) you have. In other words, 35mm is considered a mild wide-angle lens while 200mm is approximately equal to a 10x pair of binoculars. Tokina makes lenses for a wide variety of cameras. There should also be a letter designation stamped on the rear of the lens mount. "O" for Olympus, "M" for Minolta, "N" for Nikon, "P" for Pentax, etc. Sometimes, there are 2 letters showing that the lens will fit cameras from 2 different companies.---Rick

Oct 02, 2009 | Canon EF-S 17-55 f/2.8 IS USM Lens

2 Answers

What magnification is a 75-300mm lens (10_20_30 times ???)


This lens has a zoom ratio of 4 :1 or 4 times.

Basically 75mm x 2 = 150mm
150mm x 2 = 300mm
I hope that helps,
Ian

May 17, 2009 | Tamron 75-300mm f/4.0-5.6 LD Lens for...

1 Answer

Lens advice please?


There are several different lenses that are commonly used for portrait photography with this camera. I need more information to tell which one would be "best" for you, but these are all excellent choices:

85 mm f/1.2 (many portrait photographers prefer this lens)
24-70 f/2.8 (I own and love this lens)
24-105 f/4 - a great all-purpose lens that also works well for portraits

I can help more if you can tell me what lenses you already have, and what you will be shooting in addition to portraits.

Dec 25, 2008 | Canon Zoom Wide Angle-Telephoto EF...

1 Answer

The Power Zoom appears to be locked at 80mm.


(I just cut-n-pasted the comment into the solution so this shows up as a solved problem in searches.)

"I've found the solution!
Just goes to show that sometimes it's worth simply calling the importer's service department, who told me in 30 seconds!!
Hold the zoom twist-ring and push, or click it up or down, depending on which way you are holding the lens.
So simple; I even accused him of not knowing what he was talking about.. and of course apologised profusely when it suddenly happened."

Dec 15, 2007 | Pentax Zoom Wide Angle SMCP-FA 28-105mm...

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