Lack DFA 24-70 reviews

Mattox · 02-07-2016, 05:03 AM

Apart from the users from this forum I am struggling to find some in depth reviews of the new DFA 24-70. Is that because the lens has only been out a short period of time, or that we have to await the FF release to see how it really performs?

I really find the need to see the 24-70 on dxo mark prior to my purchase. It's an expensive lens and i want to be sure prior to my purchase

**monochrome** · 02-07-2016, 05:11 AM

Originally posted by Mattox

Apart from the users from this forum I am struggling to find some in depth reviews of the new DFA 24-70. Is that because the lens has only been out a short period of time, or that we have to await the FF release to see how it really performs?

I really find the need to see the 24-70 on dxo mark prior to my purchase. It's an expensive lens and i want to be sure prior to my purchase

This New Pentax DFA 24-70 f2.8 thread isn't enough? You're not likely to see DxO or dpreview do something deep and insightful any time soon. They just don't seem to review Pentax gear until Canon, Nikon and Sony have come out with their response. Then they find a way to review the Pentax item as if it is new, but lacking.

It's just part of the game.

pathdoc · 02-07-2016, 05:40 AM

Given that it's designed for the full-frame, I doubt we'll see any reviews until that camera is out. Then IMO they will almost certainly be reviewed as a package, possibly with a comparison between FF crop mode and whatever APS-C sensor is closest in pixel density and sensor specifications (probably the K5-IIs, assuming that the FF has a non-AA-filtered sensor and the 36MP guess is correct).

**Mikesul** · 02-07-2016, 06:17 AM

Check out the reviews for the Tamron SP 24-70mm Di VC USD. The Pentax DFA is said to be a port of this lens, perhaps with pentax coatings. It is likely that the Pentax version will be at least as good as the Tamron in Canon, Nikon and Sony mounts. it looks like a very solid performer.

Ratcheteer · 02-07-2016, 06:24 AM

its not cheap to make - from memory 17 elements, 3 are ED glass and 1 anomalous dispersion glass (most likely fluorite glass, which is what canon use in its L series)

zeitlos · 02-07-2016, 07:28 AM

I'm also quite confused about the fact that we cannot really find any review of this lens. Yes, the K-1 still hasn't been put on sale, but this fact didn't stop reviewers from testing the FF 150-450 lens...

bertwert · 02-07-2016, 08:14 AM - **1 Like**

I'll do an in-depth review for anyone who wants it if you buy me the lens

**boriscleto** · 02-07-2016, 08:18 AM

Originally posted by zeitlos

Yes, the K-1 still hasn't been put on sale, but this fact didn't stop reviewers from testing the FF 150-450 lens...

The 150-450 is a new lens. The 24-70 is just a Tamron.

normhead · 02-07-2016, 08:18 AM

Originally posted by bertwert

I'll do an in-depth review for anyone who wants it if you buy me the lens

Sure you say that now, but how de we know you won't just take the lens and have a 24-70 party somewhere, and never tell us a thing?

bertwert · 02-07-2016, 08:21 AM

Originally posted by normhead

Sure you say that now, but how de we know you won't just take the lens and have a 24-70 party somewhere, and never tell us a thing?

I'll do an even more in depth review if I can pair it with a K-1 someone else provides

**WPRESTO** · 02-07-2016, 08:25 AM

Originally posted by zeitlos

I'm also quite confused about the fact that we cannot really find any review of this lens. Yes, the K-1 still hasn't been put on sale, but this fact didn't stop reviewers from testing the FF 150-450 lens...

Have you seen several formal reviews of the 150~450 outside this forum? I haven't found many.

normhead · 02-07-2016, 08:27 AM

Originally posted by bertwert

I'll do an even more in depth review if I can pair it with a K-1 someone else provides

Your party is sounding better and better all the time. Keep going like this and I'll be begging for an invitation.

rawr · 02-07-2016, 08:28 AM

Originally posted by Mikesul

Check out the reviews for the Tamron SP 24-70mm Di VC USD.

+1. Mechanically and in terms of optical formula it will be identical to the Pentax. There may be some minor differences in flare control, CA colour rendition etc due to different coatings, but distortion, vignetting, resolution, AF motor speed etc should be close enough to identical. Hence tests on other brand FF's should give a decent feel for how the lens will work on PentaxFF.

normhead · 02-07-2016, 08:28 AM - **1 Like**

Originally posted by WPRESTO

Have you seen several formal reviews of the 150~450 outside this forum? I haven't found many.

Advice from people on the forum is usually better than reviews from, "some guy".

The only thing a reviewer could possibly tell you that a forum user might not to be able to is what it's like using say a K-3 and 150-450, compared to a D7300 and Nikon 100-400 or something like that, and for the most part, they don't get into stuff like that.

A lot of reviews are just rehashes of the technical spec sheet the company released.

**boriscleto** · 02-07-2016, 09:04 AM

Originally posted by WPRESTO

Have you seen several formal reviews of the 150~450 outside this forum? I haven't found many.

Just 1 that I can find.

https://www.ephotozine.com/article/pentax-hd-pentax-d-fa-150-450mm-f-4-5-5-6...w-review-27359

He gives it the same grade as the Tamron 150-600...a lens that costs half as much...

02-07-2016, 05:03 AM	#1
Mattox Senior Member Join Date: May 2014 Posts: 292	Lack DFA 24-70 reviews Apart from the users from this forum I am struggling to find some in depth reviews of the new DFA 24-70. Is that because the lens has only been out a short period of time, or that we have to await the FF release to see how it really performs? I really find the need to see the 24-70 on dxo mark prior to my purchase. It's an expensive lens and i want to be sure prior to my purchase

02-07-2016, 06:24 AM	#5
Ratcheteer Senior Member Join Date: Dec 2013 Posts: 223	its not cheap to make - from memory 17 elements, 3 are ED glass and 1 anomalous dispersion glass (most likely fluorite glass, which is what canon use in its L series) Last edited by Ratcheteer; 02-07-2016 at 06:53 AM. Reason: correcting mistakes

02-07-2016, 08:28 AM - 1 Like	#14
normhead Pentaxian Join Date: Jun 2007 Location: Near Algonquin Park Photos: Gallery \| Albums Posts: 40,448	Originally posted by WPRESTO Have you seen several formal reviews of the 150~450 outside this forum? I haven't found many. Advice from people on the forum is usually better than reviews from, "some guy". The only thing a reviewer could possibly tell you that a forum user might not to be able to is what it's like using say a K-3 and 150-450, compared to a D7300 and Nikon 100-400 or something like that, and for the most part, they don't get into stuff like that. A lot of reviews are just rehashes of the technical spec sheet the company released. Last edited by normhead; 02-07-2016 at 08:35 AM.

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02-07-2016, 05:11 AM	#2
monochrome Loyal Site Supporter Join Date: Mar 2008 Location: Working From Home Photos: Gallery \| Albums Posts: 26,276	Originally posted by Mattox Apart from the users from this forum I am struggling to find some in depth reviews of the new DFA 24-70. Is that because the lens has only been out a short period of time, or that we have to await the FF release to see how it really performs? I really find the need to see the 24-70 on dxo mark prior to my purchase. It's an expensive lens and i want to be sure prior to my purchase This New Pentax DFA 24-70 f2.8 thread isn't enough? You're not likely to see DxO or dpreview do something deep and insightful any time soon. They just don't seem to review Pentax gear until Canon, Nikon and Sony have come out with their response. Then they find a way to review the Pentax item as if it is new, but lacking. It's just part of the game.

02-07-2016, 05:40 AM	#3
pathdoc Pentaxian Join Date: Mar 2015 Photos: Gallery \| Albums Posts: 6,381	Given that it's designed for the full-frame, I doubt we'll see any reviews until that camera is out. Then IMO they will almost certainly be reviewed as a package, possibly with a comparison between FF crop mode and whatever APS-C sensor is closest in pixel density and sensor specifications (probably the K5-IIs, assuming that the FF has a non-AA-filtered sensor and the 36MP guess is correct).

02-07-2016, 06:17 AM	#4
Mikesul Loyal Site Supporter Join Date: Sep 2009 Location: Phoenix, AZ Posts: 7,594	Check out the reviews for the Tamron SP 24-70mm Di VC USD. The Pentax DFA is said to be a port of this lens, perhaps with pentax coatings. It is likely that the Pentax version will be at least as good as the Tamron in Canon, Nikon and Sony mounts. it looks like a very solid performer.

02-07-2016, 07:28 AM	#6
zeitlos Senior Member Join Date: Mar 2007 Location: In the middle of Bavaria - Germany Posts: 282	I'm also quite confused about the fact that we cannot really find any review of this lens. Yes, the K-1 still hasn't been put on sale, but this fact didn't stop reviewers from testing the FF 150-450 lens...

02-07-2016, 08:14 AM - 1 Like	#7
bertwert Veteran Member Join Date: Jun 2015 Location: Golden, BC Posts: 15,173	I'll do an in-depth review for anyone who wants it if you buy me the lens

02-07-2016, 08:18 AM	#8
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,473	Originally posted by zeitlos Yes, the K-1 still hasn't been put on sale, but this fact didn't stop reviewers from testing the FF 150-450 lens... The 150-450 is a new lens. The 24-70 is just a Tamron.

02-07-2016, 08:18 AM	#9
normhead Pentaxian Join Date: Jun 2007 Location: Near Algonquin Park Photos: Gallery \| Albums Posts: 40,448	Originally posted by bertwert I'll do an in-depth review for anyone who wants it if you buy me the lens Sure you say that now, but how de we know you won't just take the lens and have a 24-70 party somewhere, and never tell us a thing?

02-07-2016, 08:21 AM	#10
bertwert Veteran Member Join Date: Jun 2015 Location: Golden, BC Posts: 15,173	Originally posted by normhead Sure you say that now, but how de we know you won't just take the lens and have a 24-70 party somewhere, and never tell us a thing? I'll do an even more in depth review if I can pair it with a K-1 someone else provides

02-07-2016, 08:25 AM	#11
WPRESTO Loyal Site Supporter Join Date: Aug 2010 Location: Massachusetts Photos: Gallery \| Albums Posts: 59,087	Originally posted by zeitlos I'm also quite confused about the fact that we cannot really find any review of this lens. Yes, the K-1 still hasn't been put on sale, but this fact didn't stop reviewers from testing the FF 150-450 lens... Have you seen several formal reviews of the 150~450 outside this forum? I haven't found many.

02-07-2016, 08:27 AM	#12
normhead Pentaxian Join Date: Jun 2007 Location: Near Algonquin Park Photos: Gallery \| Albums Posts: 40,448	Originally posted by bertwert I'll do an even more in depth review if I can pair it with a K-1 someone else provides Your party is sounding better and better all the time. Keep going like this and I'll be begging for an invitation.

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02-07-2016, 08:28 AM	#13
rawr Veteran Member Join Date: Jun 2009 Posts: 11,913	Originally posted by Mikesul Check out the reviews for the Tamron SP 24-70mm Di VC USD. +1. Mechanically and in terms of optical formula it will be identical to the Pentax. There may be some minor differences in flare control, CA colour rendition etc due to different coatings, but distortion, vignetting, resolution, AF motor speed etc should be close enough to identical. Hence tests on other brand FF's should give a decent feel for how the lens will work on PentaxFF.

02-07-2016, 09:04 AM	#15
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,473	Originally posted by WPRESTO Have you seen several formal reviews of the 150~450 outside this forum? I haven't found many. Just 1 that I can find. https://www.ephotozine.com/article/pentax-hd-pentax-d-fa-150-450mm-f-4-5-5-6...w-review-27359 He gives it the same grade as the Tamron 150-600...a lens that costs half as much...