How can I get this?

Bringass · 08-19-2015, 05:37 PM

Mi longest focal lenght is a Pentax 50mm 1.7 or a sigma 17-50mm F2.8 (obviusly @ 50mm).

Do I need a longer lens like a 85mm or a 100mm to get this shallow DOF? In headshots I have no problem, but If I want a full body shot, I loose the shaloow DOF

https://instagram.com/p/6joND6mhzW/

https://instagram.com/p/6SxnkaGh7q/

Thanks in advance!

Adam · 08-19-2015, 06:11 PM

A little longer and F1.4 might do the trick.

**MJSfoto1956** · 08-19-2015, 06:12 PM

or simply shoot closer to your subject.

m

**clackers** · 08-19-2015, 06:15 PM

Even a slow consumer telephoto lens at its longest will do this, Bringass, but make sure the subject's close, the background's far away, and you'd better not be concerned by how smooth the bokeh ends up being. The less bright spots back there, the better. :-)

Last edited by clackers; 08-19-2015 at 06:24 PM.

Bringass · 08-19-2015, 07:23 PM

Thank you all for the tips! I had an idea but I wanted to be sure

Nick Siebers · 08-19-2015, 07:26 PM

The 50/1.7 should be able to do something like that, I would think.

DeadJohn · 08-19-2015, 11:15 PM

Originally posted by Bringass

SNIP...In headshots I have no problem, but If I want a full body shot, I loose the shaloow DOF...SNIP

How are you doing the full body shots? If using the 17-50 zoomed near 17mm, even wide open you might not get the subject isolation you want because of the wide angle. Try your 50 f1.7 and compose by backing up. Position your subject so there's a lot of distance to the background to maximize background blur.

An 85 f1.4 (Samyang/Rokinon have an inexpensive manual focus that gets good reviews) will give a thinner depth of field, but the longer focal length means you have to back up even further for a full body shot.

Bringass · 08-20-2015, 08:09 AM

Originally posted by DeadJohn

How are you doing the full body shots? If using the 17-50 zoomed near 17mm, even wide open you might not get the subject isolation you want because of the wide angle. Try your 50 f1.7 and compose by backing up. Position your subject so there's a lot of distance to the background to maximize background blur.

An 85 f1.4 (Samyang/Rokinon have an inexpensive manual focus that gets good reviews) will give a thinner depth of field, but the longer focal length means you have to back up even further for a full body shot.

Thanks DeadJohn, yes, I use my 50 F1.7 and try a half to full body taking distance from my subject, but even that way the DOF is not as shallow as in the pictures I linked.

Yes, I guess I'll have to get a longer focal lenght lens, like a 85 or a 100mm.

**clackers** · 08-20-2015, 01:28 PM

Originally posted by Bringass

Yes, I guess I'll have to get a longer focal lenght lens, like a 85 or a 100mm.

Even for full length shots, many pros will use a 70-200 f2.8 to get good bokeh, the tradeoff there being working distance.

Bringass · 08-20-2015, 01:32 PM

Thanks for the tip clackers

08-19-2015, 05:37 PM	#1
Bringass Junior Member Join Date: Oct 2010 Location: Monterrey Photos: Albums Posts: 46	How can I get this? Mi longest focal lenght is a Pentax 50mm 1.7 or a sigma 17-50mm F2.8 (obviusly @ 50mm). Do I need a longer lens like a 85mm or a 100mm to get this shallow DOF? In headshots I have no problem, but If I want a full body shot, I loose the shaloow DOF https://instagram.com/p/6joND6mhzW/ https://instagram.com/p/6SxnkaGh7q/ Thanks in advance!

08-19-2015, 06:11 PM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,608	A little longer and F1.4 might do the trick. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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08-19-2015, 06:12 PM	#3
MJSfoto1956 Site Supporter Join Date: Dec 2013 Location: Boston Posts: 1,305	or simply shoot closer to your subject. m

08-19-2015, 06:15 PM	#4
clackers Otis Memorial Pentaxian Join Date: Jul 2013 Location: Melbourne Photos: Albums Posts: 16,397	Even a slow consumer telephoto lens at its longest will do this, Bringass, but make sure the subject's close, the background's far away, and you'd better not be concerned by how smooth the bokeh ends up being. The less bright spots back there, the better. :-) Last edited by clackers; 08-19-2015 at 06:24 PM.

08-19-2015, 07:23 PM	#5
Bringass Junior Member Join Date: Oct 2010 Location: Monterrey Photos: Albums Posts: 46 Original Poster	Thank you all for the tips! I had an idea but I wanted to be sure

08-19-2015, 07:26 PM	#6
Nick Siebers Veteran Member Join Date: Jun 2008 Location: Madison, WI Photos: Gallery \| Albums Posts: 2,165	The 50/1.7 should be able to do something like that, I would think.

08-19-2015, 11:15 PM	#7
DeadJohn Pentaxian Join Date: Jan 2011 Location: New York Posts: 4,834	Originally posted by Bringass SNIP...In headshots I have no problem, but If I want a full body shot, I loose the shaloow DOF...SNIP How are you doing the full body shots? If using the 17-50 zoomed near 17mm, even wide open you might not get the subject isolation you want because of the wide angle. Try your 50 f1.7 and compose by backing up. Position your subject so there's a lot of distance to the background to maximize background blur. An 85 f1.4 (Samyang/Rokinon have an inexpensive manual focus that gets good reviews) will give a thinner depth of field, but the longer focal length means you have to back up even further for a full body shot.

08-20-2015, 08:09 AM	#8
Bringass Junior Member Join Date: Oct 2010 Location: Monterrey Photos: Albums Posts: 46 Original Poster	Originally posted by DeadJohn How are you doing the full body shots? If using the 17-50 zoomed near 17mm, even wide open you might not get the subject isolation you want because of the wide angle. Try your 50 f1.7 and compose by backing up. Position your subject so there's a lot of distance to the background to maximize background blur. An 85 f1.4 (Samyang/Rokinon have an inexpensive manual focus that gets good reviews) will give a thinner depth of field, but the longer focal length means you have to back up even further for a full body shot. Thanks DeadJohn, yes, I use my 50 F1.7 and try a half to full body taking distance from my subject, but even that way the DOF is not as shallow as in the pictures I linked. Yes, I guess I'll have to get a longer focal lenght lens, like a 85 or a 100mm.

08-20-2015, 01:28 PM	#9
clackers Otis Memorial Pentaxian Join Date: Jul 2013 Location: Melbourne Photos: Albums Posts: 16,397	Originally posted by Bringass Yes, I guess I'll have to get a longer focal lenght lens, like a 85 or a 100mm. Even for full length shots, many pros will use a 70-200 f2.8 to get good bokeh, the tradeoff there being working distance.

08-20-2015, 01:32 PM	#10
Bringass Junior Member Join Date: Oct 2010 Location: Monterrey Photos: Albums Posts: 46 Original Poster	Thanks for the tip clackers