70-210mm constant aperture F4

Hidrieus · 05-11-2017, 01:44 AM

Are there any other constant aperture AF third party lenses other than the Tokina AF 7-210mm f/4.5 or f/4 available? It seems that Pentax has not ever produced any.

pathdoc · 05-11-2017, 02:20 AM

SMC Pentax-FA* 80-200mm F2.8 ED [IF] Reviews - FA Zoom Lenses - Pentax Lens Reviews & Lens Database

I did have a longer reply, but I had originally missed the AF part of your request.

No F4, just this monster. There's an f4 in the KA mount, but no AF there.

Stagnant · 05-11-2017, 02:26 AM

Pentax A 70-210 F4, there also exists FA version of this lens. I own the A version.

Hidrieus · 05-11-2017, 02:48 AM

The Pentaxforums lens source shows that the F and FA versions are 4-5.6 not constant aperture. Am I missing something? I would like a constant aperture zoom at f/4 or f/4.5

**Rondec** · 05-11-2017, 03:07 AM

Why not just shoot the DA *50-135 on a crop camera? Size will be roughly the same as a 70-200 f4 on full frame and performance at least as good. Plus the cost is less than for all the 70-200 f4 lenses I could find except for the Canon without IS.

fwcetus · 05-11-2017, 03:29 AM

Originally posted by Stagnant

Pentax A 70-210 F4, there also exists FA version of this lens. I own the A version.

No -- MF A version only -- no AF F or FA version.

Stagnant · 05-11-2017, 03:46 AM

Originally posted by fwcetus

No -- MF A version only -- no AF F or FA version.

Sorry, my bad. Confused it with the variable aperture lens with a similar focal length.

fwcetus · 05-11-2017, 04:13 AM

Originally posted by Stagnant

Sorry, my bad. Confused it with the variable aperture lens with a similar focal length.

Understood. It might also be a case of "wishful thinking", too -- I know that ~I~ tend to prefer constant aperture zooms, given the choice (which, nowadays, is not really all that often).

[As an aside, though, the F 70-210/4-5.6 is quite a good li'l zoom, quite sharp and very with a very quick AF action, although I prefer using the A 70-210/4 myself.]

starbase218 · 05-11-2017, 04:15 AM

The DA* 60-250/4 can be modified to cover the fullframe image circle.

D1N0 · 05-11-2017, 05:38 AM

There is the D FA* 70-200 F2.8...

There is no F4 version of that focal length. There are however Tamron and Sigma 70-200 F2.8 lenses. The Tamron can even be bought new.

victormeldrew · 05-11-2017, 07:08 AM - **1 Like**

Originally posted by D1N0

There are however Tamron and Sigma 70-200 F2.8 lenses. The Tamron can even be bought new.

And quite cheaply given the commendable performance of the lens. Plus, mine can be set to constant f/4 (or any other value) at the flick of a thumb.

ScooterMaxi Jim · 05-11-2017, 08:30 AM

It really is a shame. You simply can't compare a Tamron 70-200 f/2.8 with the quiet, smooth quality and build of a Canon 70-200 f/4 L lens - at roughly half the size. (I own the 200 f/2.8 L that is often compared to the slightly smaller zoom; this is the best lens I own not only in IQ, but in adding up all the other factors related to AF.)

In this age of sensors yielding virtually the same quality of image whether they are set at ISO 100 or 400, Pentax missed an opportunity to claim an untapped market by going large not only with the K-1, but the lenses offered. I've shot FF in Canon, but the 5D was much easier to handle than the K-1. When I needed long, the 200L would take a 1.4x TC and suffer nearly no IQ loss. If Pentax went a bit smaller and offered constant aperture zooms at f/3.5 or 4, they'd have at least one more adopter (me). As it stands, I'll just stick with the K-3 and be satisfied with the smaller format. I strongly prefer Pentax overall, but the situation with the longer lenses and heavy FF zooms offerings are not conducive to my shooting needs.

victormeldrew · 05-11-2017, 09:32 AM

Originally posted by ScooterMaxi Jim

It really is a shame. You simply can't compare a Tamron 70-200 f/2.8 with the quiet, smooth quality and build of a Canon 70-200 f/4 L lens.

Well....the Tamron is infinitely better for attaching to a Pentax. The Canon totally fails at that.

But I agree, Pentax (or anyone) has never built an f/4 version of the same focal length, I guess once the f/2.8 is out, they move their limited resources on to other focal lengths rather than double up.

Hidrieus · 05-11-2017, 11:02 PM

I found for $69 a Tokina AF 70-210mm f/4.5 I think it is a good deal. I like internal focusing and constant aperture zooms. D FA* 70-200 F2.8 is way outside my badget. And even if I was rich it is bigger and too heavy to carry around. Thank you all for the replies.

05-11-2017, 01:44 AM	#1
Hidrieus Veteran Member Join Date: Oct 2014 Posts: 326	70-210mm constant aperture F4 Are there any other constant aperture AF third party lenses other than the Tokina AF 7-210mm f/4.5 or f/4 available? It seems that Pentax has not ever produced any.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
For Sale - Sold: PK/A adaptall adapter with Tamron 70-210mm constant f/3.5 (19AH) and Vivitar 28-80mm	kp0c	Sold Items	6	01-10-2016 04:39 PM
For Sale - Sold: Tokina AF 70-210mm constant f/4.5(REDUCED to $115)	tcbubbleleo	Sold Items	19	08-19-2012 10:43 AM
For Sale - Sold: SMC Pentax-A 28-135mm f4 Zoom, constant aperture	Just1MoreDave	Sold Items	2	09-19-2011 12:05 AM
Constant Aperture vs Variable Aperture	Netsoft	Pentax SLR Lens Discussion	13	01-11-2010 07:29 AM

05-11-2017, 02:20 AM	#2
pathdoc Pentaxian Join Date: Mar 2015 Photos: Gallery \| Albums Posts: 6,381	SMC Pentax-FA* 80-200mm F2.8 ED [IF] Reviews - FA Zoom Lenses - Pentax Lens Reviews & Lens Database I did have a longer reply, but I had originally missed the AF part of your request. No F4, just this monster. There's an f4 in the KA mount, but no AF there.

05-11-2017, 02:26 AM	#3
Stagnant Veteran Member Join Date: Dec 2013 Photos: Gallery Posts: 603	Pentax A 70-210 F4, there also exists FA version of this lens. I own the A version.

05-11-2017, 02:48 AM	#4
Hidrieus Veteran Member Join Date: Oct 2014 Posts: 326 Original Poster	The Pentaxforums lens source shows that the F and FA versions are 4-5.6 not constant aperture. Am I missing something? I would like a constant aperture zoom at f/4 or f/4.5

05-11-2017, 03:07 AM	#5
Rondec Loyal Site Supporter Join Date: Mar 2009 Location: Gladys, Virginia Photos: Gallery Posts: 27,652	Why not just shoot the DA *50-135 on a crop camera? Size will be roughly the same as a 70-200 f4 on full frame and performance at least as good. Plus the cost is less than for all the 70-200 f4 lenses I could find except for the Canon without IS.

05-11-2017, 03:29 AM	#6
fwcetus Site Supporter Join Date: Sep 2006 Location: New England Photos: Gallery \| Albums Posts: 1,286	Originally posted by Stagnant Pentax A 70-210 F4, there also exists FA version of this lens. I own the A version. No -- MF A version only -- no AF F or FA version.

05-11-2017, 03:46 AM	#7
Stagnant Veteran Member Join Date: Dec 2013 Photos: Gallery Posts: 603	Originally posted by fwcetus No -- MF A version only -- no AF F or FA version. Sorry, my bad. Confused it with the variable aperture lens with a similar focal length.

05-11-2017, 04:13 AM	#8
fwcetus Site Supporter Join Date: Sep 2006 Location: New England Photos: Gallery \| Albums Posts: 1,286	Originally posted by Stagnant Sorry, my bad. Confused it with the variable aperture lens with a similar focal length. Understood. It might also be a case of "wishful thinking", too -- I know that ~I~ tend to prefer constant aperture zooms, given the choice (which, nowadays, is not really all that often). [As an aside, though, the F 70-210/4-5.6 is quite a good li'l zoom, quite sharp and very with a very quick AF action, although I prefer using the A 70-210/4 myself.]

05-11-2017, 04:15 AM	#9
starbase218 Inactive Account Join Date: Sep 2009 Location: Planet Earth, Sol system, Milky Way galaxy, Universe Posts: 1,119	The DA* 60-250/4 can be modified to cover the fullframe image circle.

05-11-2017, 05:38 AM	#10
D1N0 Pentaxian Join Date: May 2012 Location: --- Photos: Gallery Posts: 6,802	There is the D FA* 70-200 F2.8... There is no F4 version of that focal length. There are however Tamron and Sigma 70-200 F2.8 lenses. The Tamron can even be bought new.

05-11-2017, 07:08 AM - 1 Like	#11
victormeldrew Veteran Member Join Date: Jun 2015 Location: South West UK Photos: Albums Posts: 1,493	Originally posted by D1N0 There are however Tamron and Sigma 70-200 F2.8 lenses. The Tamron can even be bought new. And quite cheaply given the commendable performance of the lens. Plus, mine can be set to constant f/4 (or any other value) at the flick of a thumb.

Thread Tools	Search this Thread
	Search this Thread: Advanced Search

05-11-2017, 08:30 AM	#12
ScooterMaxi Jim Veteran Member Join Date: Jul 2009 Location: Minnesota Posts: 1,520	It really is a shame. You simply can't compare a Tamron 70-200 f/2.8 with the quiet, smooth quality and build of a Canon 70-200 f/4 L lens - at roughly half the size. (I own the 200 f/2.8 L that is often compared to the slightly smaller zoom; this is the best lens I own not only in IQ, but in adding up all the other factors related to AF.) In this age of sensors yielding virtually the same quality of image whether they are set at ISO 100 or 400, Pentax missed an opportunity to claim an untapped market by going large not only with the K-1, but the lenses offered. I've shot FF in Canon, but the 5D was much easier to handle than the K-1. When I needed long, the 200L would take a 1.4x TC and suffer nearly no IQ loss. If Pentax went a bit smaller and offered constant aperture zooms at f/3.5 or 4, they'd have at least one more adopter (me). As it stands, I'll just stick with the K-3 and be satisfied with the smaller format. I strongly prefer Pentax overall, but the situation with the longer lenses and heavy FF zooms offerings are not conducive to my shooting needs.

05-11-2017, 09:32 AM	#13
victormeldrew Veteran Member Join Date: Jun 2015 Location: South West UK Photos: Albums Posts: 1,493	Originally posted by ScooterMaxi Jim It really is a shame. You simply can't compare a Tamron 70-200 f/2.8 with the quiet, smooth quality and build of a Canon 70-200 f/4 L lens. Well....the Tamron is infinitely better for attaching to a Pentax. The Canon totally fails at that. But I agree, Pentax (or anyone) has never built an f/4 version of the same focal length, I guess once the f/2.8 is out, they move their limited resources on to other focal lengths rather than double up.

05-11-2017, 11:02 PM	#14
Hidrieus Veteran Member Join Date: Oct 2014 Posts: 326 Original Poster	I found for $69 a Tokina AF 70-210mm f/4.5 I think it is a good deal. I like internal focusing and constant aperture zooms. D FA* 70-200 F2.8 is way outside my badget. And even if I was rich it is bigger and too heavy to carry around. Thank you all for the replies.