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Lenses

In my manual they refer to a telephonic side and a wide angle side of a lens. Do these to appear on the same lens or do they appear on two seperate lenses?

Eddie by Apprentice
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canon 18-135 is focus problem after 50mm

Hi guys!I have a canon 18-135 is lens which gives me trouble. It's bought second hand. It will not focus after i zoom above 50mm. in the 18-50 are it works perfectly. as soon as i zoom after 50mm, it focuses really hard, sometimes not at all. the mot...

Resolved! Best prime lens for wide angle macro photography

I am looking for information on the use of wide angle lenses and extension tubes for close up photography.  The images will be used to capture surface contours using PhotoModeler software.  This requires the use of a prime lens.  I purchased a Canon ...

hacketet by Contributor
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DOF and the use of extenders

If i shoot my 400 mm f 2.8 at f 4, adding a 1.4X makes it an f 4.  Is the depth of field the same with and without the extender at f 4?

Edward by Enthusiast
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Canon 15mm Fisheye F2.8 Focus Problem

Hello All, I have about 5 year old 15mm Fisheye lens. i dropped it couple of times. nothing broke but kind stopped focusing with manual focus point selection. if i put my camera to auto focus select it focus at random spots. i am cps member and can s...

ajabdeep by Apprentice
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2x Doubler

Bummer.  Have a 1st generatioon 2x that I successfully use on my 70-200 2.8-IS F lens.  Visiting my brother who has a100 - 500 F series & I couldn't wait to play with his lens & my doubler.  He lives on the country and there's lots of wildlife.  Does...

Jchafitz by Enthusiast
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Resolved! "The next lens to buy"

 Hi I am looking to buy "the next lens" . Preferably a macro lens but i am confused. I currently have a 18-55mm and 50mm lens. I mostly capture landscapes and flowers.  TksZinta 

zinta by Contributor
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Best Lens Hood for 40 2.8 STM

Not in my opinion the one designed for this lens, a hood is made to stop flare not  just to say I´m a lens hood.Planning to use the one designed for the 50 1.8 the Canon ES-62 , It might destroy the low profile but ona APS-C Sensor Does what a lens h...

AF Microadjustment

Has anyone had any problems with the Microfocus adjustment point drifting dependent on the temperature?This happens on my 600mm lens alot.

AlanP by Apprentice
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Telephoto lens

What lens is recommended for wildlife shots?  I currently have a 250mm but would like something that can get closer.  I am looking at the 400 but have never used one so I do not know if that will be enough.  My shots are usually 100-200 yards away.

fjord24 by Apprentice
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EF 70-300mm f/4-5.6 IS USM lens.

I have a 60D camera and I just purchased the EF 70-300mm f/4-5.6 IS USM lens because I thought it might be a good addition to give me a bit more reach than my 18-135mm. I noticed, in AF, the zoom will not fully retract. If I switch to MF I can retrac...

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