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Tamron SP AF 90mm F/2.5 Macro 1:2 (52EP) Review RSS Feed

Tamron SP AF 90mm F/2.5 Macro 1:2 (52EP)

Reviews Views Date of last review
2 10,416 Sun May 19, 2019
Recommended By Average Price Average User Rating
100% of reviewers $180.00 10.00
Tamron SP AF 90mm F/2.5 Macro 1:2 (52EP)

Tamron SP AF 90mm F/2.5 Macro 1:2 (52EP)
Tamron SP AF 90mm F/2.5 Macro 1:2 (52EP)
Tamron SP AF 90mm F/2.5 Macro 1:2 (52EP)
Tamron SP AF 90mm F/2.5 Macro 1:2 (52EP)
Tamron SP AF 90mm F/2.5 Macro 1:2 (52EP)
Tamron SP AF 90mm F/2.5 Macro 1:2 (52EP)

This lens features an focus limiter.
Released in 1990, it's of course an full frame lens.
The lens number suggests it is the auutofocus version of the classic adaptall 52B/52BB. It's rarity is probably because that lens was soon superceded by the 72B and its autofocus analogue the 72E.


Product code: 52EP
Focal length: 90 mm
Widest aperture: 2.5
Lens construction: 6 groups 8 pieces
Max. aperture: 2.8
Minimum Aperture: 32
Min. focus: 0.39 m
Max. Magnification: 1: 2
Filter Size: 52mm
Hood: 58 FH
Weight: 405 g (14,3 oz.)
Diam x Length: 67 mm x 86.5 mm
Price: •65,000
Production Years: 1990-1992

Lens Features:
Auto Aperture
Aperture Ring
AF limiter


Pictures courtesy of users LightBug and Direx:
Mount Type: Pentax KAF2/KAF (screwdrive AF)
Price History:

Add Review of Tamron SP AF 90mm F/2.5 Macro 1:2 (52EP)
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Forum Member

Registered: March, 2008
Location: Kyiv
Posts: 69
Lens Review Date: May 19, 2019 I can recommend this lens: Yes | Price: $180.00 | Rating: 10 

Pros: Sharpness, overall picture quality, price.
Cons: Noisy AF, not 1:1 Macro, not easy to find.
Sharpness: 9    Aberrations: 9    Bokeh: 9    Handling: 9    Value: 10    Camera Used: K-30   

I was looking for a short telephoto AF lens for portraits/flowers for a long time and Pentax doesn't provide much choice here.

Tamron 90/2.5 was purchased spontaneously after using MF Tamron adaptall for couple of days (that lens is also good but manual focusing is a pain and 90% of photos are vasted due to back/front focusing).

Build quality is great, in most situations (except close focusing) front lens is located deep inside so you donít need lens hood or filters. Full/limit AF option is very useful. This lens is only 1:2 Macro so if you need true macro lens you'd better search for Pentax100/2.8, Tamron90/2.8 or something like that.

AF is noisy, sometimes can hunt but overall is better then I expected, no front of back focusing even wide open.

Picture quality: it's great, especially when we are talking about less then 200USD lens. It's sharp enough wide open and very sharp at 5.6 but not to harsh. Bokeh... I like this type of bokeh, not too dirty, not too "boring".

Overall this lens is a very pleasant surprise and if you are looking for not expensive AF portrait lens - this lens will provide you much more you can expect.
New Member

Registered: December, 2016
Posts: 22
Lens Review Date: February 25, 2018 I can recommend this lens: Yes | Price: $180.00 | Rating: 10 

Pros: Sharp - wide open, macro, fast ( f2.5 )...well- built-in AF ( in compare to a adaptall version )
Cons: noisy AF, AF can hunt a little, AF not always is accurate, weak plastic sun hood
Sharpness: 10    Aberrations: 9    Bokeh: 8    Handling: 9    Value: 10    Camera Used: Pentax K-70   

I have a pleasure to be the first to review this rare lense.

Well there's not much to find in the internet about this lense. So when i found it on e-bay, i decided to buy it.

I made few test and I think i can write a little review for you guys.

At first feel free to visit my FB page to find more Pentax photos ( also made with this lense )


As most of the real Macro lenses, this one is razor sharp from wide open... somethimes even too sharp for portraits but that's not a problem.
I compared it to a two lenses: Tamron 70-200 f/2.8 (set at 70mm ) and a Samyang 85 f/1.4. Both of those lenses are known to be very sharp.

So here's comparisons ( cropped images - for pexel peepers )

Here's the basic photo ( Tamron 90mm f/2.5 / f/5.6, 30% of full size of image ) :

Wasn't post proces at all ( same as the samples below )

As you can see Tamron 70-200 is just a little bit sharper at f2.8 but from f4 to a f5.6 Tamron 90 beat the Tamron 70-200 in sharpness:

Also there's bit more CA visible in Tamron 70-200

What about Samyang 85 f/1.4 vs Tamron 90 f/2.5?

Samyang is a bit sharper at f/2.5 and much more sharper at f/2.8 but also Samyang suffer with visible CA

From f/5.6 Tamron 90 is a bit softer or at least sharp the same as Samyang 85.

Biggest positive is work. Nice there is AF limit to make it work a bit faster. It's preety noisy and have tendency to hunt a bit and somethimes it's not very accurate... Anyway it's still work. I would rate it 7/10


some visible - nothing to worry about. I may say it's almost CA free.


Well i never know how to rate it. Well bokeh is nice but i much more preffer creamy bokeh from Pentax-A 50mm f1.7.

All shots taken at f/2.5

Well it's mid size lense. I may say it's rather small than big. Feels just fine. Anyway the sun hood feels weak - but it work as it should and it's convertible so I won't change it to any other ( screwed on filter ).


The macro is 1:2 so i would say it's much more like VERY close focusing. It's usefull if you bought the lense for general purpose ( portraits etc. ). If you need something "more macro" try Tamron 90 f2.8 or Tamron Adaptall f2.5 ( manual ) or Sigma 70 f2.8.

I think it's grate lense. The biggest positives are that's preety fast ( f2.5 ), sharp and have AF... who need anything else?

Some samples:
Add Review of Tamron SP AF 90mm F/2.5 Macro 1:2 (52EP)

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