Pentax DA 560 or SIGMA 500 APO - which one


Algernon

Link Posted 06/12/2015 - 16:08
Leave the in lens SR turned ON even if using a tripod. From memory I think it's position 1 position 2 is for panning.

Turn off the Pentax body SR.

Try to use a remote shutter release with mirror up for the tests.

Use f/8 to f/11 on the lens. ISO possibly 800 until you sort the lens out.

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

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

Algi

Taynuiltpixels

Link Posted 06/12/2015 - 16:41
my version of the lens does not have SR or IS - how does turning the IS off in the camera help with focus?
"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 - 16:45
If the stabilization is left on, it can introduce shake when on a tripod
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 - 16:50
How can IS induce shake when a tripod is used? (just have a curious mind, so need to understand, not questioning the advice )
"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 - 16:54

Chrism8

Link Posted 06/12/2015 - 17:16
The sensor kind of generates its own shake because it can't find any that its expecting to find for it to counter.

IMHO, if nothing on the bird shot is in focus, it sort of suggests camera shake of some sort or perhaps a lens requiring a service. If you were closer I'd suggest we meet and you try my example.
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 - 18:07
It's a pity the lens hasn't got Sigma's OS (Optical Stabilizer) function. It's almost impossible to hold a 500mm or longer lens steady on a tripod. I tried a 2x TC on DA*300mm and the only way I could steady it was with another tripod supporting the front of the lens with one of these...... Forked_support_ebay

The Pentax SR switches itself off when you select remote + delay.

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

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

Algi

Taynuiltpixels

Link Posted 06/12/2015 - 18:37
I always thought as Pentax bodies (k series) has IS built in there was no need for lenses to have it - hence old glass performs very well. I get stunning shots with my FA 80-320 (which has not got built in IS) -just a shame it does not have the reach.

I will also be a bit annoyed if the lens IS is critical as the person who sold me the Sigma 150 -500mm (via this forum) told me it would not make any difference due to Pentax body having IS - he advertised it as the latest model which it evidently was not when it arrived which is why I queried it with him. Apart from that it appeared in good nick so I decided not to insist on a refund.
"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.

johnriley

Link Posted 06/12/2015 - 19:01
Pentax call it SR (shake reduction) and the in-body system seems to work very well.

But for capturing birds and other fast moving subjects it's not helpful, whether in camera or in lens. The reason is that there's a small delay whilst SR locks in and also that reducing camera shake does nothing at all to reduce subject movement.

So for fast moving subjects we still need high shutter speeds and when on a tripod we need SR switched off. In the latter case, the two second delay switches off SR and also raises the mirror two seconds before the exposure is made, allowing any mirror vibration to subside.
Best regards, John

Taynuiltpixels

Link Posted 06/12/2015 - 19:18
Thanks John, -
johnriley wrote:
Pentax call it SR (shake reduction) and the in-body system seems to work very well.

But for capturing birds and other fast moving subjects it's not helpful, whether in camera or in lens. The reason is that there's a small delay whilst SR locks in and also that reducing camera shake does nothing at all to reduce subject movement.

So for fast moving subjects we still need high shutter speeds and when on a tripod we need SR switched off. In the latter case, the two second delay switches off SR and also raises the mirror two seconds before the exposure is made, allowing any mirror vibration to subside.

Just to clarify -switching off SR stops the 2 second delay as opposed to other way round?
"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.

McGregNi

Link Posted 06/12/2015 - 19:30
SR and the timer are completely separate functions, but to avoid unintended use of SR when on a tripod, then the camera automatically switches off SR when the delay is activated .... The assumption being that timer plus remote will be used with the camera supported. I think the same happens with mirror up plus remote.
My Guides to the Pentax Digital Camera Flash Lighting System : Download here from the PentaxForums Homepage Article .... link
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver

K30pete

Link Posted 06/12/2015 - 19:32
Algernon wrote:
It's a pity the lens hasn't got Sigma's OS (Optical Stabilizer) function. It's almost impossible to hold a 500mm or longer lens steady on a tripod. I tried a 2x TC on DA*300mm and the only way I could steady it was with another tripod supporting the front of the lens with one of these...... Forked_support_ebay

The Pentax SR switches itself off when you select remote + delay.

--

Hope I'm not going to far of topic but thought it might be helpful..

I can highly recommend this ballhead for anyone using long lenses ..it's absolute rock solid when locked. I use the DA300 + DA (SR switched off) on this without any issues (even in Scottish weather) When using this the weak part will be the tripod.

Algernon

Link Posted 06/12/2015 - 19:46
A big advantage of the Sigma OS (Optical Stabilizer) function at 500mm and beyond is that the view through the viewfinder is absolutely steady handheld or on a tripod.


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

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

Algi

Taynuiltpixels

Link Posted 06/12/2015 - 19:54
just looked at this https://www.youtube.com/watch?v=jRlGu9T5lXk - and also https://www.youtube.com/watch?v=XzasQOxhbKE I now realise I have been using SR all wrong - oh well always learning.
"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 - 19:58

Blythman

Link Posted 06/12/2015 - 20:43
If you want to check out 560mm photos, there's plenty on my Flickr photostream
Alan


PPG
Flickr

ronniemac

Link Posted 07/12/2015 - 21:01
When having trouble focusing via the optical viewfinder, I switch to LV. This also kicks in mirror lock-up (obviously). I use with focus peaking and centre magnification. With a long reach lens, you may find the standard 2 second delay from pressing the shutter is not enough, depending on a range of factors. If you haven't an wireless remote control, try using the 12 second delay, if you can afford the time.

A quick way to ascertain front/back focus issues is to take identical shots, one via viewfinder, the other on LV. All other variables should be taken out of the equation, making a tripod essential for this test.

Hope this helps, but it looks like you have a bucket full of advice, most of which is very helpful.
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