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My slr lens will not work with my pentax k-m dslr camera, it will not let me take photos, the lens is a manual lens Optomax 300mm. and a F keeps flashing on the screen

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Currently have sigma 28-80mm 1:3.5-5.6 and 100-300mm 1:4.5-6.7 lenses both 55mm that I use with my Pentax MZ-50. I would like to purchase a DSLR camera and rather than waste the lenses I already own would...


before buying ask the sigma salesman or dealer about it, i know only for nikon camera- it's lenses are compatible for all camera, digital or film base slr cameras.

Feb 12, 2011 | Sigma 28-80mm Mini Zoom Macro Lens

1 Answer

I have an old pentax film camera and bought a sigma 100-300mm f4.5-6.7 DL lens to go with it. I believe the lens is compatible with Pentax dslr. If I was to update to DSLR what other camera brands would it...


If I am not mistaken all lens can pretty much work with other cameras provide that the attachment is compatible. Having said that with the new SLR cameras with auto focus of the lens the lens itself has a motor and it would be difficult to attach it to a manual SLR. Save yourself the headache and if you can purchase same manufacturer for camera body and lens life would be wonderful. In the past I thought that I could save money and do the swap thing and it just became too much. In addition the new cameras that are out has wonderful features like anti vibration, smooth focusing and the sensors are just dynamite. Good Luck

Jan 07, 2011 | Quantaray 100-300mm F4.5-6.7 Zoom lens for...

4 Answers

Pentax ES2; do bayonet lens fit digital Pentax SLR?


Any Pentax K-mount lens will fit any Pentax DSLR. The DSLR will fire the shutter.  There is a menu setting (RTFM) which allows the use of older lenses, but you will lose some of the automation (again RTFM). Remember to allow that the effective focal length when using a "film" lens on a DSLR body goes up by 50%.
A standard 50mm lens becomes a 75mm equivalent, but stays a large aperture.

Nov 25, 2009 | Pentax ME Super 35mm SLR Camera

2 Answers

Which dslr cemera is best for Sigma 70-300mm f/4-5.6 DL Macro


It could Canon, this is one of the edge Canon over other brands. Its versatility on lens mount is better.

Oct 06, 2009 | Sigma AF 70-300mm f/4.0-5.6 DL Macro Super...

1 Answer

Quantaray 70-300mm SLR lens does not work with Canon DSLR STi


If it doesn't work then sorry that is how it is. I heard is not really a good reason, I hear a lot of things most is not true.

May 19, 2017 | Quantaray 100-300mm F4.5-6.7 Zoom Lens for...

1 Answer

Cameras compatible with Quantaray AF 70-300mm lens


Depending on how new your Minolta SLR film camera was, the lens may or may not work on a Minolta Digital SLR. In many cases, a lens with the correct mount (in this case, a Minolta mount) can be used on the same brand of camera in the digital format.

One thing you should know is that DSLR sensors are, generally speaking, smaller than the size of a 35mm film negative. Long story short, that means that your lens will have a magnification factor on the DSLR. Usually, it is in the range of 150%, so a 70-300 lens from a film camera would cover 105 to 450 on a Digital SLR.

To be sure about the mount, you'll need to seek advice specific to Minoltas -- probably best to take your lens to a local camera shop and see for sure if it fits and what features will work (aperature, auto-focus, etc) and which won't work on the DSLR.

May 31, 2009 | Quantaray AF 70-300mm f/4.0-5.6 High Speed...

3 Answers

I have a Quantaray 70-300 f1:4-5.6 LDOMacro. I have been using it with Minolta QTsi Maxxum SLR. I am looking into getting a Digital SLR that I can use my lens with. Is there one out there.


http://shop.ebay.com/items/_W0QQ_nkwZminoltaQ20canonQ20
adapterQQ_armrsZ1QQ_fromZR40QQ_mdoZ

here is a link to an ebay search for minolta to canon eos adapter, they sell for just about every camera. i know it sucks, buying a new camera that wont work with your favorite lens, but i think you might be better served focusing (couldnt help myself) on camera features and pricing. i own a canon dslr and love it. sigma has a cool dslr. it has a three layer image sensor, with a removable on sensor ir filter. the ir filter thing is really cool.

Dec 16, 2008 | Quantaray AF 70-300mm f/4.0-5.6 High Speed...

2 Answers

LENSE


Make sure the aperture ring is set to the "A" position. If the lens doesn't have an auto aperture setting then I don't think the lens will work. There is a setting called "Using Aperture Ring" that you can setup using the menu and configuration that can be set to "Permitted" that will allow you to take pictures even if the aperture ring is not set on "A", but not sure how well this work for you, but should allow the shutter to work.

Feb 02, 2007 | Pentax *ist DL (W/18-55 LENS) Digital...

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