Pentax DA 560 or SIGMA 500 APO - which one


Taynuiltpixels

Link Posted 05/12/2015 - 21:06
Hi - I have a K5 ii S, have been using a sigma 150-500 but cannot get it pin sharp (or as sharp as I think it should be), starting to think about jumping to a prime. I have not been that impressed with the Sigma 150-500 so thinking about P DA560mm instead. What would you guys recommend?

Stephen

1stEverPentax

Link Posted 05/12/2015 - 22:24
Have you considered the Pentax 150-450 ? Sharper than the Sigma 150-500 I believe, will operate in Scottish weather and much cheaper and more versatile than the other two options you mention.

Taynuiltpixels

Link Posted 05/12/2015 - 22:38
No - I'll check that out. I was impressed by the sharpness of the 560mm - in your experience is the 150-450 in the same league?
"All you ever gotta do is be a good man one time to one woman"
(Janis Joplin)

KIT: K5iis, DAWR18-55mm,FA4.5 80-320mm, Mitsuki 5.6 400mm, M1.7 50mm, M1.4 50mm, M2.8 28mm, Miranda M2.8 28mm, M3.5 135mm, M1.4 200mm, Vivitar S13.5 70-210mm, Vivitar A 2.8 90mm macro,
Sigma150-500mm F5-6.3 APO DG HSM.

1stEverPentax

Link Posted 06/12/2015 - 00:41
I haven't used any of those lenses! However i've seen many images from them (with the exception of the Sigma 500...only a few from that) and have read many comments from users and the 150-450 seems a really sharp and impressive lens that looks like it will allow a bit of extra cropping without much loss in image quality. The 560mm is a fine lens but is quite a beast size/handling wise and is twice the price of the 150-450...plus it is bright white and will stand out like a sore thumb on the hills without some sort of a lens jacket.

Start another thread asking for some images from owners of these lenses so you can compare the quality between the 150-450 and 560.

Daronl

Link Posted 06/12/2015 - 01:24
Sharpness of the 150-450; you can check it out in some of my portfolio shots - I think it is as sharp as a DA* 300

It is so good that even after 6 months of heavy use I still am amazed every time I use it.

Stunning piece of glass and it's a zoom; Just can't believe it

Regards



Taynuiltpixels wrote:
No - I'll check that out. I was impressed by the sharpness of the 560mm - in your experience is the 150-450 in the same league?


Daronl

Algernon

Link Posted 06/12/2015 - 09:04
A DA*300mm f/4 + the Pentax-F 1.7x Adapter will give you 510mm f/6.3. It indicates the correct aperture to the camera. Image is bigger than the 1.4x TC and just as sharp.

The Sigma 150-500mm should be sharp What's important with these long lenses is holding them steady and getting the focus spot on. The Sigma has the advantage of in lens SR which works on a tripod. It should beat a 300mm + TC. Even a tripod won't hold a 500mm lens very steady. Sharpening is also important.

Test shot Sigma 150-500mm at f/8 500mm on k-5 400ISO tripod SR ON
100% crop from JPG slight sharpening in Zoner. Distance about 50m. It's harder to hold a 500mm lens steady on longer distances.




Click for 800w

--
Half Man... Half Pentax ... Half Cucumber

Pentax K-1 + K-5 and some other stuff

Algi
Last Edited by Algernon on 06/12/2015 - 09:35

Chrism8

Link Posted 06/12/2015 - 09:17
I've just recently acquired a sigma 150 - 500 from a fellow pentaxian on this forum

Used it properly for the first time a couple of days ago, and its razor sharp as shown below

K5iis, Sigma 150 - 500 @ 500mm 1/125th sec F8 ISO 200 with monopod



Chris

www.chrismillsphotography.co.uk

" A Hangover is something that occupies the Head you neglected to use the night before".

-------------------------------------------------------------
K1 - Sigma 85mm F1.4, Pentax 150 -450 F4.5 / 5.6, Pentax FA 24 - 70 F2.8

Sigma 100-300 F4, Samyang 14mm F2.8, Sigma 70-200 F2.8,

K5iis - Sigma 17 - 70 F2.8, Sigma 70 - 300 F3.5/F5.6, Sigma 18 - 200 F3.6 / F4.5.

Taynuiltpixels

Link Posted 06/12/2015 - 09:55
thanks for all of the above - starting to think something on my sigma 150- 500 maybe out of kilter - had it for two years and never got an image with it that I am happy with re sharpness. Are their things with this lens that can wear, come lose etc which can throw it off kilter?
"All you ever gotta do is be a good man one time to one woman"
(Janis Joplin)

KIT: K5iis, DAWR18-55mm,FA4.5 80-320mm, Mitsuki 5.6 400mm, M1.7 50mm, M1.4 50mm, M2.8 28mm, Miranda M2.8 28mm, M3.5 135mm, M1.4 200mm, Vivitar S13.5 70-210mm, Vivitar A 2.8 90mm macro,
Sigma150-500mm F5-6.3 APO DG HSM.

Chrism8

Link Posted 06/12/2015 - 10:06
You can obviously have it serviced by Sigma, if I was you, I'd go through some images I've shot with it and being quite brutal with myself, look hard at the shutter speed, was it handheld ? how fast was the subject moving and then refine the technique accordingly.

I found with it a monopod was very useful as the light wasn't brilliant and I didn't wish to boast the ISO to far.
Chris

www.chrismillsphotography.co.uk

" A Hangover is something that occupies the Head you neglected to use the night before".

-------------------------------------------------------------
K1 - Sigma 85mm F1.4, Pentax 150 -450 F4.5 / 5.6, Pentax FA 24 - 70 F2.8

Sigma 100-300 F4, Samyang 14mm F2.8, Sigma 70-200 F2.8,

K5iis - Sigma 17 - 70 F2.8, Sigma 70 - 300 F3.5/F5.6, Sigma 18 - 200 F3.6 / F4.5.

Taynuiltpixels

Link Posted 06/12/2015 - 13:20
Ok, just went out - light not great, figured "auto" knows best - this is typical shot with this lens - tripod but did not go as far as mu and rt - this has had no PP, no cropping, its high res as in 9MB! - nothing is in focus/sharp - the subject i.e. the bird (focused on this), the branch in the fore or tree/twigs in the background - its not the camera as it takes tack sharp with my old glass etc. Thoughts welcome. I brought the lens 2nd hand - is it time to send it to Sigma for some adjustments?


this second image shows what this camera can do with manual 50mm lens

"All you ever gotta do is be a good man one time to one woman"
(Janis Joplin)

KIT: K5iis, DAWR18-55mm,FA4.5 80-320mm, Mitsuki 5.6 400mm, M1.7 50mm, M1.4 50mm, M2.8 28mm, Miranda M2.8 28mm, M3.5 135mm, M1.4 200mm, Vivitar S13.5 70-210mm, Vivitar A 2.8 90mm macro,
Sigma150-500mm F5-6.3 APO DG HSM.
Last Edited by Taynuiltpixels on 06/12/2015 - 13:22

K30pete

Link Posted 06/12/2015 - 13:54
Before sending it away for costly servicing... perhaps you could do another test? Create "perfect" light conditions on a subject inside the house for example and optimize the stability and see how it performs.

What is the shutter speed you used with the bird shot?

Taynuiltpixels

Link Posted 06/12/2015 - 14:07
Hi Pete - at 500mm -auto put it all at f6.3, iso 320, ET320.
"All you ever gotta do is be a good man one time to one woman"
(Janis Joplin)

KIT: K5iis, DAWR18-55mm,FA4.5 80-320mm, Mitsuki 5.6 400mm, M1.7 50mm, M1.4 50mm, M2.8 28mm, Miranda M2.8 28mm, M3.5 135mm, M1.4 200mm, Vivitar S13.5 70-210mm, Vivitar A 2.8 90mm macro,
Sigma150-500mm F5-6.3 APO DG HSM.

Chrism8

Link Posted 06/12/2015 - 14:25
As you were on a tripod, did you turn off the stabilisation ?

Try taking the ISO right up, say 1000 / 1600 or more to get your shutter speed above 1/750th sec
Chris

www.chrismillsphotography.co.uk

" A Hangover is something that occupies the Head you neglected to use the night before".

-------------------------------------------------------------
K1 - Sigma 85mm F1.4, Pentax 150 -450 F4.5 / 5.6, Pentax FA 24 - 70 F2.8

Sigma 100-300 F4, Samyang 14mm F2.8, Sigma 70-200 F2.8,

K5iis - Sigma 17 - 70 F2.8, Sigma 70 - 300 F3.5/F5.6, Sigma 18 - 200 F3.6 / F4.5.

Algernon

Link Posted 06/12/2015 - 14:27
The bird shot looks to be heavily front focusing on the nearest part of the branch.

Try taking a photo of some roof tiles (full roof) focusing on the middle tiles and see if it's the tiles in front that are in focus.

--
Half Man... Half Pentax ... Half Cucumber

Pentax K-1 + K-5 and some other stuff

Algi

Taynuiltpixels

Link Posted 06/12/2015 - 15:58
Too dark now for the tiles but that is a good idea Algi - I'll give it a go. Chris - I left stabilisation on (I always do). Does leaving it on effect sharpness and if so how. Re the higher iso - I tried that before to get the shutter speed up and just makes things worse a horribly noisy but I'll give it another go.

Rightly or wrongly I presumed by taking it on auto then the best settings would be achieved.

re the focus, I have zoomed in on all parts of the birds and the branch to check - none of it is in focus.

How much do sigma charge for "checking and correcting" a lens?
"All you ever gotta do is be a good man one time to one woman"
(Janis Joplin)

KIT: K5iis, DAWR18-55mm,FA4.5 80-320mm, Mitsuki 5.6 400mm, M1.7 50mm, M1.4 50mm, M2.8 28mm, Miranda M2.8 28mm, M3.5 135mm, M1.4 200mm, Vivitar S13.5 70-210mm, Vivitar A 2.8 90mm macro,
Sigma150-500mm F5-6.3 APO DG HSM.
Last Edited by Taynuiltpixels on 06/12/2015 - 15:59
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