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05-04-2019, 04:32 AM   #1
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Focus distance

When description says Minimum Focus Distance 11.81" / 30 cm is that from the front of lens or back where it mounts on camera body?
Pentax smc Pentax-D FA 100mm f/2.8 WR Macro Lens

05-04-2019, 04:46 AM - 1 Like   #2
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IIRC, it's to the sensor/film plane....
05-04-2019, 04:48 AM - 4 Likes   #3
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It's measured from the sensor, when the lens is attached to the camera.

On the top of the camera should be a center symbol printed. Looks like a circle with a line through it. That's where it would measure from.

On my K-5, the symbol is on the right hand side of the camera, between the top screen and strap connector.
05-04-2019, 04:49 AM - 1 Like   #4
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Thanks.

---------- Post added 05-04-19 at 04:55 AM ----------

I have K70

05-04-2019, 05:01 AM - 1 Like   #5
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QuoteOriginally posted by 1776freedomson Quote
Thanks.

---------- Post added 05-04-19 at 04:55 AM ----------

I have K70
Looks like the focal plane mark is on the left side of the K-70.
05-04-2019, 07:13 AM - 1 Like   #6
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QuoteOriginally posted by Riggomatic Quote
On the top of the camera should be a center symbol printed. Looks like a circle with a line through it. That's where it would measure from.
I have only just noticed that on my K1 after reading your post !!
05-04-2019, 08:11 AM - 5 Likes   #7
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QuoteOriginally posted by pschlute Quote
I have only just noticed that on my K1 after reading your post !!
I admit, I only found out about it a few weeks ago, in a 6week nature photograhy class I took at the local college.

I was excited I could reply to a thread with a little knowledge to share, rather than just sitting on the bench😀
05-04-2019, 09:05 AM   #8
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The focal plane indicator has been on the top plate of many, probably the majority of SLR cameras going deep into the film era. NOTE THAT, when a close-up filter focus distance is given, it is usually from the front element of the lens rather than the film/sensor surface of the camera body.

05-04-2019, 03:55 PM - 1 Like   #9
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QuoteOriginally posted by 1776freedomson Quote
Thanks.

---------- Post added 05-04-19 at 04:55 AM ----------

I have K70


Page 9 of the K-70 User Manual, top image, it's marked "Image Plane Indicator", next to the strap-lug on the left-hand side of the camera
05-05-2019, 04:37 AM - 1 Like   #10
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Thanks all. Found it in plain sight of course. Didn't see the tree for the forest so to speak.
05-05-2019, 04:58 AM - 2 Likes   #11
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Do I ever feel dumb!! Fifty plus years of camera ownership and I never noticed that tiny symbol (at least it's tiny on my K-1).
05-05-2019, 07:47 AM - 2 Likes   #12
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QuoteOriginally posted by wanderer2 Quote
Do I ever feel dumb!! Fifty plus years of camera ownership and I never noticed that tiny symbol (at least it's tiny on my K-1).
Join the club.
05-06-2019, 04:53 AM   #13
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QuoteOriginally posted by wanderer2 Quote
Do I ever feel dumb!! Fifty plus years of camera ownership and I never noticed that tiny symbol (at least it's tiny on my K-1).
Tiny on K70 as well.
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