K100d - Shake Reduction Focal Length?

Russell W. Barnes · 05-08-2009, 12:21 PM

Hallo,

I've been playing with the 'shake reduction' on my recently-acquired K100d, and was wondering about the focal length setting when using my old PK lenses. I'm assuming that one uses the focal length for the camera (or the DA lens) rather than the M-lens, so, for example, when using my 200mm f4 PK manual lens, I set the SR to 1.5 x 200, ie: 300mm? For my 28mm PK manual lens (my current 'standard' lens, equivalent to the 40mm pancake on my MX), I select 1.5 x 28, ie: 43 (nearest value)?

I've made a few comparisons and I can't say I notice any difference, but was curious to know if I was doing the right thing or not.

alohadave · 05-08-2009, 12:50 PM

Enter the focal length marked on the lens. You do not need to do any math.

tybeck · 05-08-2009, 01:34 PM

As said focal length is focal length. The 1.5X factor for the APS-C lens is just a crop factor, i.e. a 31mm lens with the sensor will look like a 46.5 mm lens on a full frame sensor or film. If you don't find your exact focal length in the menu just pick the closest one.

Russell W. Barnes · 05-08-2009, 02:23 PM

I see; many thanks!

Russell W. Barnes · 05-08-2009, 02:57 PM

Originally posted by tybeck

As said focal length is focal length.

Of course it is!! God; what an eedjit!

- Must've had a blonde/senior moment there; too quick to shoot off a query without thinking first.

Maybe I thought a little thingy came out when I mounted a manual lens and pushed the CCD backwards...

res3567 · 05-08-2009, 07:09 PM

Originally posted by Russell W. barnes

Of course it is!! God; what an eedjit!

- Must've had a blonde/senior moment there; too quick to shoot off a query without thinking first.

...

HA!

You are funny!

It was a good thought.

Your not the only one ( I did it too at first!).

Keep on shooting!

05-08-2009, 12:21 PM	#1
Russell W. Barnes Senior Member Join Date: Apr 2009 Location: Near Penrith, Cumbria, England UK Photos: Gallery Posts: 296	K100d - Shake Reduction Focal Length? Hallo, I've been playing with the 'shake reduction' on my recently-acquired K100d, and was wondering about the focal length setting when using my old PK lenses. I'm assuming that one uses the focal length for the camera (or the DA lens) rather than the M-lens, so, for example, when using my 200mm f4 PK manual lens, I set the SR to 1.5 x 200, ie: 300mm? For my 28mm PK manual lens (my current 'standard' lens, equivalent to the 40mm pancake on my MX), I select 1.5 x 28, ie: 43 (nearest value)? I've made a few comparisons and I can't say I notice any difference, but was curious to know if I was doing the right thing or not.

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05-08-2009, 12:50 PM	#2
alohadave Veteran Member Join Date: Jan 2008 Location: Quincy, MA Photos: Gallery \| Albums Posts: 2,024	Enter the focal length marked on the lens. You do not need to do any math.

05-08-2009, 01:34 PM	#3
tybeck Veteran Member Join Date: Dec 2007 Location: San Francisco, CA Posts: 452	As said focal length is focal length. The 1.5X factor for the APS-C lens is just a crop factor, i.e. a 31mm lens with the sensor will look like a 46.5 mm lens on a full frame sensor or film. If you don't find your exact focal length in the menu just pick the closest one.

05-08-2009, 02:23 PM	#4
Russell W. Barnes Senior Member Join Date: Apr 2009 Location: Near Penrith, Cumbria, England UK Photos: Gallery Posts: 296 Original Poster	I see; many thanks!

05-08-2009, 02:57 PM	#5
Russell W. Barnes Senior Member Join Date: Apr 2009 Location: Near Penrith, Cumbria, England UK Photos: Gallery Posts: 296 Original Poster	Originally posted by tybeck As said focal length is focal length. Of course it is!! God; what an eedjit! - Must've had a blonde/senior moment there; too quick to shoot off a query without thinking first. Maybe I thought a little thingy came out when I mounted a manual lens and pushed the CCD backwards...

05-08-2009, 07:09 PM	#6
res3567 Veteran Member Join Date: Sep 2008 Location: Houston Tx. Photos: Gallery Posts: 1,876	Originally posted by Russell W. barnes Of course it is!! God; what an eedjit! - Must've had a blonde/senior moment there; too quick to shoot off a query without thinking first. ... HA! You are funny! It was a good thought. Your not the only one ( I did it too at first!). Keep on shooting!