Arthur Dent

Joined: 25th July 2005

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Arthur Dent
Quote:
When using non-digital Pentax AF lenses with the digi K SLR's...is there a 1.5 focal length increase?
There is no focal length increase. It's a crop factor!

Comment by Arthur Dent posted on Focal length increase at 06/11/2006 - 16:02

Arthur Dent
I'll go for a dunking in Guiness. With mouth wide open!!

Comment by Arthur Dent posted on Focal length increase at 06/11/2006 - 16:01

Arthur Dent
By setting the camera to accept a lens in other than A setting, and using either the green button or the meter in Manual, you effectively have an apeture priority lens. Just another step to the process, no biggie!

Comment by Arthur Dent posted on K mount lenses - HELP! at 06/11/2006 - 16:04

Arthur Dent
Quote:

I guess the other major benefit is that faster lenses allow one to shoot with slower ISO films which generally yield improved colour, contrast and grain? If true, also true with digital?
The effect is the same, although the fine technical details are slightly different.

There ain't no such thing as a free lunch!

Comment by Arthur Dent posted on Is a Really Fast Lens Worth It? at 06/11/2006 - 16:07

Arthur Dent
The Gaussian Blur feature in Photoshop is the same as a diffusion filter.

Comment by Arthur Dent posted on Diffusion Confusion at 04/11/2006 - 20:50

Arthur Dent
Actually, I'm glad that the new camera doesn't have all those silly Scene modes. My D has the basics, plus some sort of "green" mode which I tend to ignore.

The K10D only has a couple of more modes, and they're actual real useful modes. We'll wait to see the camera, but it sounds like a well thought-out peice of equipement.

Comment by Arthur Dent posted on Death on the dial at 19/10/2006 - 15:41

Arthur Dent
As far as I understand it, the term "macro" originally applied to equipement that would let you acheive 1:1 or greater magnification on the film/sensor plane. A lot of lenses with close focusing ability, but not true "maceo" lenses, have been sold as "macro" over the years.

The 100mm f/4 lets you acheive half of life-size on the film plane, so technically it's not a true macro lens. But with an extention tube, you can go macro easily enough. It's also corrected to function best at close distances, so in a sense it's more of a "macro" lens than a regular 100mm lens.

Comment by Arthur Dent posted on 100mm Macro Quandry at 19/10/2006 - 15:48

Arthur Dent
I never understood why a still camera should be making videos. If you want to film a video, you use a video camera, right?

The whole thing is nonsense!

Comment by Arthur Dent posted on Higher import tax on Digital cameras at 19/10/2006 - 15:34

Arthur Dent
The two digital bodies that I have, the D and the K10D, both have a feature where you allow the lens not set to A, and use the green button to get a light reading (center-weighted). So you put the camera in manual, but you are effectively using aperture priority.

It seems to work just fine.

Comment by Arthur Dent posted on f 3.5/15mm on D at 13/12/2006 - 11:15

Arthur Dent
The 15mm lens won't be as wide as on a film camera, but it'll sill be plenty wide. The 85mm will also be cropped so that it's the sme as using a 127mm lens. Great for headshots and such.

Comment by Arthur Dent posted on f 3.5/15mm on D at 14/10/2006 - 03:13

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