Smc FA 1:4-5.6 70-200 <--> smc F 1:4-5.6 70-200

Is there anybody out there who knows something about the difference between these two lenses? Is the FA also very good like the older F-zoom?

martin

Sorry, it was smc fa-zoom 1:4-5.6 70-210 smc f-zoom 1:4-5.6 70-200

The FA is the newer lens and will be every bit as good as the F. I'm not sure what feature is on the FA series that is not on the F series, but I will find out!

All my autofocus lenses are actually FA or later.

We should mention we are talking Pentax, for those who don't recognise the descriptions!

John

Hi John, I asked because I hope I can buy one of these lenses for my Z1-P.
The Fa- lens is 100 g lighter and a little bit bigger.
Is the optical quality the same?
How fast is the focus in both cases.
Can I for instance shot pictures from motocross- drivers?
What are your lenses?
martin

These are of course two different designs. The SMC Pentax-F 70-210mm f4-5.6 has 13 elements in 9 groups and weighs in at 555g.

The SMC Pentax-FA 70-200mm f4-5.6 has 10 elements in 8 groups and weighs 465g.

Both take 49mm filters, very compact for the focal length.

I doubt that you will see much difference between them and would suggest that attention to scontrolling any potential camera shake will be most beneficial.

In terms of focus speed, the motor is in the camera, but there are factors also in lenses that will affect this. The more mass the motor has to move the slower it will be. However, I have no experience of AF with F lenses compared to FA so maybe someone else can help.

The sister site to this one www.pentaxuser.co.uk might be a good place to find more answers. See you there!

John

I have the F 70-210 (the FA is 70-200)

The F 70-210 is razor sharp fast AF and nice to handle. paid 60 euro for it and would not mis it for the world.
The F has an ED element in it.

I have no experience with the FA version.

Geyst