stuck in f5.6

[cloudspirit]

trying to complete lesson 4 I found my Pentax k10D camera aperture staying on 5.6 even when I turned aperture ring to f16 on AV mode
using a 28-105 lens. I tried again today and same thing.
Can't figure this one out any help out there.
Cheryl

[coffee]

I looked up your camera. When you say aperture ring, is that something that's on the lens, or are you refering to the dial on the camera?

I know the older setups had aperture rings on the lenses, but with todays digital, these setting are made by the camera itself.

Have you been able to change this in the past and it's worked ok, but now doesn't?

[cloudspirit]

yes, it is a dial on the lens and I have been able to take shots in f/16 in the past. With this lens I have to turn it to the A positon (automatic) to work for this K10D, then I can use the e-dial to change fstops, so they say.

[coffee]

yes, it is a dial on the lens and I have been able to take shots in f/16 in the past. With this lens I have to turn it to the A positon (automatic) to work for this K10D, then I can use the e-dial to change fstops, so they say.

I would think that if the lens is in aito mode, then it would decide that aperture to use on it's own. Have you tied putting the lens in manual mode, then making changes with your camera? If that doesn't work I would read the manual further.

I haven't heard of a digital camera like your having the aperture settings on the camera AND lenses. Seems they would fight with each other. And your problem sounds like they are. I just think you are missing a setting somewhere. There must be a way to bypass the lens settings and just use the camera settings. I don't know.

[coffee]

Are you using an old len that may not be fully compatable with you camera? I just looked up the user manual for your camera and I didn't find anything in there that talked about using a manual lens in conjuntion with the camera.

[cloudspirit]

Ya, my thought exactly, they are in competion.
I am not advanced enough to get this straight yet, but given my lens (1:4-5.6) size does that restirct my options.
Going through my manual it does have a section on compatable lenses
"If you are using ---- or A with AV mode(per class instruction) the aperture will always remain at the widest setting- the f-stop will not change regardless of the position of the aperture ring."
Soooooooooo what does that mean.
?

[coffee]

No. These numbers represent the biggest apertures avalible, not the smallest. 1:4, means that at it's widest focal lenth, meaning not zoomed in, the biggest aperture possible is 1:4. When you zoom in all the way with your lens, the biggest possible A is 5.6. You should be able to stop your lens down to 1:16 or smaller regardless, depending on the mode you are in. Keep in mind that the smaller the number, 1:4 is the largest lens openning. 1:16 is a smaller openning.

Is this the lens that came with your camera, or is this lens from an older camera you had?

Now there may be a way to bypass all settings on the lens, and changes settings from your camera, but I've never had to try that so I don't know. But in any event, and if you can get this to work, you will want to use your camera to change these settings, and leave the lens in what ever mode it takes to make it work. But again, I don't know if that is even possible.

[coffee]

I found this. I didn't read much of it, I will let you do that. But this may give some insight.

http://porters.com/LENS%20COMPATIBILE.pdf

[cloudspirit]

Thank you so,
I am going out into the heat and get this sucker to work!

[coffee]

Let us know how you make out.

[coffee]

Actually, I think I may have gotten something wrong. If this lens in an older maunal lens, and if this is going to work at all, then I would think the aperture setting would have to be done on the lens, and the camera would have to be put in a certain setting that would allow this to work.

[reval8r]

I own several old Pentax lenses from the '80's. A major reason I choose Pentax when purchasing a DSLR was to use the old glass. To be honest, I wasn't happy with the old glass on my new digital cameras. They work, but it was too much work to get good consistant images so I have abandoned the use of the old glass on my digital bodies. The Pentax 18-55 & 50-200 mm zoom lenses are pretty good glass at a good price. They work much better with the K10 than do the old ones and will save a lot of frustration.

[cloudspirit]

Up-date,
After time spent with my camera and manual I got it. It was a lens matter, that is, mine are older and some tweeking had to be done, but the good news is my frustration is gone now I can do some shooting in confidence, for the time being. I am saving my pennies for D lenses, this is too much work and not enough FUNNNNNN
Thanks again for your help.

[coffee]

That's great. What combination ended up working?

[cloudspirit]

I had to turn my lens to "A" only and then put mode in AV and change settings in e-dial, however I am still not able to use my prime 50mm lens in anything but manual and all of the functions will not work and as reval8r noted picture quality is still an issue but it's all I've got right now.
Do you know of any deals on D lenses?
Cheryl

[jerryph]

On my Nikon, if I am using an old manual lens, I have to set the lens' aperture manually to it's WIDEST (numerically smallest) setting, tell the camera that I am using a non-CPU lens, and then the camera controls all my aperture settings in all modes. Of course on lenses that old, there is no auto focus, so that has to be done manually... no biggie on the D200. ;)