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zzeitg · 06-08-2015, 07:28 AM

Originally posted by Sandy Hancock

Kiron 28/2.0

I forgot about this one... have to add it in my list above.

**Kerrowdown** · 06-08-2015, 11:50 AM

Originally posted by fwcetus

for the A* 135/1.8, 135 / 1.8 = 75, and the 135/1.8 has a 77mm filter thread, so f/1.8 seems reasonable

Funny you should say that... as the "Lady Luck” (SMC Pentax-A* 135mm F1.8) always reports herself wide open as F1.7 and in the metadata too.

**Kerrowdown** · 06-09-2015, 07:18 AM

Originally posted by Lowell Goudge

long lenses and fast apertures the front element gets really really big in a hurry

Aye but very Pro looking too.

**Lowell Goudge** · 06-09-2015, 09:02 AM

Originally posted by Kerrowdown

Funny you should say that... as the "Lady Luck” (SMC Pentax-A* 135mm F1.8) always reports herself wide open as F1.7 and in the metadata too.

If you look at the KA lens coding spec, there is no F1.8 only F1.7.

---------- Post added 06-09-2015 at 12:03 PM ----------

Originally posted by Kerrowdown

Aye but very Pro looking too.

so that explains why pentax DSLRs are not "Pro" they are simply too small

**Kerrowdown** · 06-09-2015, 09:18 AM

Originally posted by Lowell Goudge

If you look at the KA lens coding spec, there is no F1.8 only F1.7.

So I guess we'll never really know...

Originally posted by Lowell Goudge

why pentax DSLRs are not "Pro" they are simply too small

You've got it one.

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06-08-2015, 07:28 AM	#16
zzeitg Pentaxian Join Date: Sep 2014 Location: South Bohemia Photos: Gallery \| Albums Posts: 4,017 Original Poster	Originally posted by Sandy Hancock Kiron 28/2.0 I forgot about this one... have to add it in my list above.

06-08-2015, 11:50 AM	#17
Kerrowdown PEG Moderator Join Date: Aug 2008 Location: Highlands of Scotland... "Hold Infinity in the palm of your hand" - William Blake Photos: Gallery Posts: 57,867	Originally posted by fwcetus for the A* 135/1.8, 135 / 1.8 = 75, and the 135/1.8 has a 77mm filter thread, so f/1.8 seems reasonable Funny you should say that... as the "Lady Luck” (SMC Pentax-A* 135mm F1.8) always reports herself wide open as F1.7 and in the metadata too.

06-09-2015, 07:18 AM	#18
Kerrowdown PEG Moderator Join Date: Aug 2008 Location: Highlands of Scotland... "Hold Infinity in the palm of your hand" - William Blake Photos: Gallery Posts: 57,867	Originally posted by Lowell Goudge long lenses and fast apertures the front element gets really really big in a hurry Aye but very Pro looking too.

06-09-2015, 09:02 AM	#19
Lowell Goudge Site Supporter Join Date: Jan 2007 Location: Toronto Photos: Gallery \| Albums Posts: 17,892	Originally posted by Kerrowdown Funny you should say that... as the "Lady Luck” (SMC Pentax-A* 135mm F1.8) always reports herself wide open as F1.7 and in the metadata too. If you look at the KA lens coding spec, there is no F1.8 only F1.7. ---------- Post added 06-09-2015 at 12:03 PM ---------- Originally posted by Kerrowdown Aye but very Pro looking too. so that explains why pentax DSLRs are not "Pro" they are simply too small

06-09-2015, 09:18 AM	#20
Kerrowdown PEG Moderator Join Date: Aug 2008 Location: Highlands of Scotland... "Hold Infinity in the palm of your hand" - William Blake Photos: Gallery Posts: 57,867	Originally posted by Lowell Goudge If you look at the KA lens coding spec, there is no F1.8 only F1.7. So I guess we'll never really know... Originally posted by Lowell Goudge why pentax DSLRs are not "Pro" they are simply too small You've got it one.

Fast wide angle and telephoto lenses