Kx question.

Unr3a1 · 08-27-2010, 08:33 PM

I have noticed that even in manual mode, the aperture range varies and I haven't figured out what causes it. Sometimes I am able to lower the aperture to F4.5 and other times I am only able to lower it to F5.6.

Since I mostly take my photos in generally poor lighting, I usually keep the aperture as low as it allows me. I also generally do not use the flash due to my cats eyes being heavily reflected. Is this correct, or does it matter?

SpecialK · 08-27-2010, 08:45 PM

Your lens, like many lenses, has a variable aperture that changes with the focal length.

Marc Sabatella · 08-28-2010, 10:09 AM

In particular, at the wide end of the zoom, you can go down to f/3.5, but at the long end, you can only go down to f/5.6. In between, you can get to f/4 or f/4.5. That's why the lens is listed as 18-55/3.5-5.6.

Since this is about lenses not camera, but is also a common question among newcomers to DSLR's, I'm moving it to the Beginner's forum.

Unr3a1 · 08-28-2010, 10:37 AM

Thanks for the response, I see what you mean. That is very interesting. Thank you again for the info.

egordon99 · 08-30-2010, 08:50 AM

Originally posted by Unr3a1

I also generally do not use the flash due to my cats eyes being heavily reflected. Is this correct, or does it matter?

I don't have a cat, but I have a dog and when I bounce the flash, I don't have any problems with the eyes. Do you have an external flash? If you take pictures indoors, you really should own an external flash.

KxBlaze · 08-30-2010, 09:06 AM

Originally posted by Unr3a1

I also generally do not use the flash due to my cats eyes being heavily reflected. Is this correct, or does it matter?

Originally posted by egordon99

I don't have a cat, but I have a dog and when I bounce the flash, I don't have any problems with the eyes. Do you have an external flash? If you take pictures indoors, you really should own an external flash.

I also shoot my dog indoors and I do get heavy reflection/red eyes when using the pop up flash. A diffuser helps a little bit but since you have a Kx just bump up the ISO to 3200 and you will still get good pictures. Or bump it up to 6400 and use noise ninja.

08-27-2010, 08:33 PM	#1
Unr3a1 Junior Member Join Date: Jul 2010 Photos: Gallery \| Albums Posts: 35	Kx question. I have noticed that even in manual mode, the aperture range varies and I haven't figured out what causes it. Sometimes I am able to lower the aperture to F4.5 and other times I am only able to lower it to F5.6. Since I mostly take my photos in generally poor lighting, I usually keep the aperture as low as it allows me. I also generally do not use the flash due to my cats eyes being heavily reflected. Is this correct, or does it matter?

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08-27-2010, 08:45 PM	#2
SpecialK Pentaxian Join Date: Dec 2006 Location: So California Photos: Gallery Posts: 16,482	Your lens, like many lenses, has a variable aperture that changes with the focal length.

08-28-2010, 10:09 AM	#3
Marc Sabatella Veteran Member Join Date: Sep 2006 Location: Denver, CO Photos: Gallery Posts: 10,685	In particular, at the wide end of the zoom, you can go down to f/3.5, but at the long end, you can only go down to f/5.6. In between, you can get to f/4 or f/4.5. That's why the lens is listed as 18-55/3.5-5.6. Since this is about lenses not camera, but is also a common question among newcomers to DSLR's, I'm moving it to the Beginner's forum.

08-28-2010, 10:37 AM	#4
Unr3a1 Junior Member Join Date: Jul 2010 Photos: Gallery \| Albums Posts: 35 Original Poster	Thanks for the response, I see what you mean. That is very interesting. Thank you again for the info.

08-30-2010, 08:50 AM	#5
egordon99 Inactive Account Join Date: Dec 2006 Location: Outside of Philly Posts: 1,561	Originally posted by Unr3a1 I also generally do not use the flash due to my cats eyes being heavily reflected. Is this correct, or does it matter? I don't have a cat, but I have a dog and when I bounce the flash, I don't have any problems with the eyes. Do you have an external flash? If you take pictures indoors, you really should own an external flash.

08-30-2010, 09:06 AM	#6
KxBlaze Veteran Member Join Date: Feb 2010 Location: California Photos: Gallery Posts: 1,602	Originally posted by Unr3a1 I also generally do not use the flash due to my cats eyes being heavily reflected. Is this correct, or does it matter? Originally posted by egordon99 I don't have a cat, but I have a dog and when I bounce the flash, I don't have any problems with the eyes. Do you have an external flash? If you take pictures indoors, you really should own an external flash. I also shoot my dog indoors and I do get heavy reflection/red eyes when using the pop up flash. A diffuser helps a little bit but since you have a Kx just bump up the ISO to 3200 and you will still get good pictures. Or bump it up to 6400 and use noise ninja.