ED Glass in the Pentax SP Line ??????? (1 Viewer)

G

gcole

Well-known member

• Aug 20, 2009

• #1

I have read in a old post about ED glass being used in the Pentax SP's. Does anyone know if its true ? If so why is it not mentioned in the Specs like the newer ED put out by Pentax ?

 

Kevin Purcell

Well-known member

• Aug 20, 2009

• #2

Perhaps because it's not true?

I have an 8x32 SP and from it's view I think I could be sure that it doesn't have ED glass in the objective. Too much CA.

 

jmepler

It's just a flesh wound.

• Aug 20, 2009

• #3

The specifications for the binoculars in the DCF ED line are virtually the same as for the DCF SP's with the exception of 0.3 - 0.8 ounces more (depending on size) for the ED's due to the extra weight of the ED glass.

As Kevin said, no ED glass in the SP's.

Mike

 

G

gcole

Well-known member

• Aug 20, 2009

• #4

Thanks guys

 

FrankD

Well-known member

• Aug 21, 2009

• #5

I remember those posts gcole and actually saw an advertisement from Pentax (pre-ED days) where they touted ED glass in their designs. I wish I still had the magazine.

...but as Kevin referenced the SPs certainly do show CA.

 

Kevin Purcell

Well-known member

• Aug 21, 2009

• #6

I wonder if they started to use some other "exotic" glass in the EP design (say LaK) and someone decided that "ED" was code for "exotic" glass.

Just speculation. But I've seen that mistake made before.