This is not true of the more recent Pentax DSLRs, including the budget K-x. I just came inside from shooting origami boats in the park across the street with mine with the 50/2 SMC-Pentax.
I also really like the older Spotmatics ad have an original as well as an F, far better build quality than the K & M cameras. I'd be tempted by the SIa on sale on APUG right now
Ian
You have to look in the viewfinder and press the shutter partway to see what shutter speed you have set! You can't quickly change the shutter speed by a large amount...you have to sit there pushing the button like 6 times in a row to change by 6 speeds.
Here is a Pentax K-x with its mount:
http://www.imaging-resource.com/PRODS/KX/ZURFRONT-L.JPG
Where is the coupling between the house and a K-lens aperture ring?
Compare to the picture attached below where i have added some red color to the coupling devices needed to be compatible with a K-mount lens.
Read also this statement at pentaximaging.com, that also supports what i am saying that Pentax K-mount only can be used in manual exposure mode using stop down metering. Only those lenses with an "A" on the aperture ring can be used in automatic modes. An ordinary K-lens has to be used in the same as an ancient M42 screw mount on new bodies.
Dead Link Removed
Pentax is _not_ fully compatible with its old lenses and cannot use them in aperture priority as 30 year old cameras can.
Pentax Super Program / Super A - a tiny bit larger than the ME/super but with a very nice grip and larger viewfinder. My favorite of the bunch.
Non-A K-mount lenses ..
I have both the ME and ME Super and a Program Plus, and there is no way that the Program Plus has a bigger viewfinder. Both the ME and ME Super viewfinder are bigger. The Program Plus also has a much louder and clunkier shutter, but it works fine. It's a good camera and you can't beat how cheap they are.
Steve, I was thinking of the K1000 where the quality did change over the years. The KM, KX and K2 were OK but there's an awful lot more K1000's around.
Ian
I am writing about K-mount lenses, you are writing specific about AK-lenses.. That clears it up.
Few old K-mount lenses are AK counting all different brands, including many of the new ones still made today. A 30 year old Pentax, Chinon, Richo, Cosina, Sears, Agfa, Soligor, Zenit, brand new Phenix or Vivitars made today and some more can use plain old K-lenses of a long series of brands, and light meter, and use aperture priority with them as supposed. A new Pentax can not (requiring an extra button push). (edit: this is what new cameras do to photographers, reduce them to button-pushers)
That argument has Pentax thrown away, though they are trying to use it anyway. Only reason they get away with it has to do with psychology, the more someone has sacrificed (payed money, time, prestige), the more they are going to defend and excuse the manufacturer just to justify them self, and buyers of new DSLR cameras usually have invested a big enough amount of money to be hurt by negative statement about "their" brand of choise. (edit) This is the main reason to long brand-flamewars on the net.
It's just silly and factually incorrect to label one extra button push "stop-down metering the same as ancient M42 lenses", which is what you said.
Over the years I've had the opportunity to try several different brands of mechanical and electronic cameras of which I thought quite often that I would love to own one. And over the years I did acquire several bodies from different manufacturers, and spent a tidy sum of money to bring them to better working condition. They all now sit in a drawer awaiting use, while I would "normally" scour the ads for the next "just got to have it because it's a better, smaller/lighter/faster/more feature ridden camera" body that should do the job so much better then the last one; And then of course I need a full set of lenses on top of it besides all the accessories. But fortunately before I ran out of drawer space, and money, I figured out that the Holy Grail of camera bodies doesn't exist; It's a myth. So, I stuck a lens on my K1000 with the broken meter, put a light meter in my pocket, and set DOF by the aperture ring and slowed down and got some very nice pictures without the need to add to my collection, which is up for sale btw. What I have learned is that for what i have spent on equipment, I could have easily gone on my greatest dream photo vacation and still have money left over; For a lens.
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