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DPChallenge Forums >> Hardware and Software >> Portrait Lense
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05/07/2008 06:51:09 PM · #1
I'm looking for a good portrait lense that I can use where the entire group will be sharp and in focus.

I have a Sigma 28-70mm 2.8-4 DG but when I take a portrait only one person is in focus. Does anyone have any tips on getting more than one person in focus with this lense or is it not possible for this particular lense to habe en entire group in focus.
05/07/2008 06:54:15 PM · #2
Can post an example? What were your settings? Aperture?
05/07/2008 06:58:13 PM · #3
^ its an $80 lens, it will only do so much

sounds like your taking group shots so Ill reccomend
24-70
24-70 macro
since i dont know much about nikkor

I used the ex sigma and it was great and I handled the macro....
they will fit the bill fine, but this is just a start

Message edited by author 2008-05-07 23:01:50.
05/07/2008 07:31:41 PM · #4
Here are two photos I took last weekend using the sigma
aperture for both photos was 4.0.

//www.dpchallenge.com/portfolio_edit.php?IMAGE_ID=677058 focal range of 28mm and

//www.dpchallenge.com/portfolio_edit.php?IMAGE_ID=677059 focal range of 32mm.


05/07/2008 07:52:23 PM · #5
rebecca, the lenses I selected are going to help a little, or go with some nikkor

but that is not the problem here, These photos failed for many reasons. I dont have time to cover them all but WB is one issue
05/07/2008 08:18:35 PM · #6
Originally posted by rbryan22:

I'm looking for a good portrait lense that I can use where the entire group will be sharp and in focus.


In the price range of ... ?

Originally posted by rbryan22:

I have a Sigma 28-70mm 2.8-4 DG but when I take a portrait only one person is in focus. Does anyone have any tips on getting more than one person in focus with this lense or is it not possible for this particular lense to habe en entire group in focus.


Were you using it at f/2.8? Try a wider aperture, like f/8.
05/07/2008 10:58:32 PM · #7
Originally posted by rbryan22:

Here are two photos I took last weekend using the sigma
aperture for both photos was 4.0.

//www.dpchallenge.com/portfolio_edit.php?IMAGE_ID=677058 focal range of 28mm and

//www.dpchallenge.com/portfolio_edit.php?IMAGE_ID=677059 focal range of 32mm.



05/07/2008 11:28:32 PM · #8
Originally posted by rbryan22:

Here are two photos I took last weekend using the sigma
aperture for both photos was 4.0.

//www.dpchallenge.com/portfolio_edit.php?IMAGE_ID=677058 focal range of 28mm and

//www.dpchallenge.com/portfolio_edit.php?IMAGE_ID=677059 focal range of 32mm.


Looking at the review for this lens at FredMiranda, I think f/4 is a bit too wide open for this particular lens. It si not a bad lens for its price, but it needs to be stopped down a bit (try f/5.6 or f/8) and requires some postprocessing too. If you think of buying a higher quality lens without spending too much money, try the Nikon 35mm f/2
05/08/2008 12:47:48 AM · #9
//www.dofmaster.com/dofjs.htmlcheck out this site. it helped me alot.

Message edited by author 2008-05-08 04:48:32.
05/08/2008 03:37:39 AM · #10
I have a Tamron that cost about $40 that does great for outdoor portraits - which is mainly what I do.
05/08/2008 06:47:53 AM · #11
Originally posted by FourTDSean:

rebecca, the lenses I selected are going to help a little, or go with some nikkor

but that is not the problem here, These photos failed for many reasons. I dont have time to cover them all but WB is one issue


When you get a chance please elaborate on the issues. If there are things I can change technically I may not need a new lense.
05/08/2008 07:06:41 AM · #12
Originally posted by Camabs:

Originally posted by rbryan22:

Here are two photos I took last weekend using the sigma
aperture for both photos was 4.0.

//www.dpchallenge.com/portfolio_edit.php?IMAGE_ID=677058 focal range of 28mm and

//www.dpchallenge.com/portfolio_edit.php?IMAGE_ID=677059 focal range of 32mm.


Looking at the review for this lens at FredMiranda, I think f/4 is a bit too wide open for this particular lens. It si not a bad lens for its price, but it needs to be stopped down a bit (try f/5.6 or f/8) and requires some postprocessing too. If you think of buying a higher quality lens without spending too much money, try the Nikon 35mm f/2


Thanks for the advice. I'll keep practicing...it seems by what I'm reading the lense is sufficient but I need to work on the technical end of using it.

Message edited by author 2008-05-08 11:06:57.
05/08/2008 07:14:48 AM · #13
I shoot a lot of portraits of both couples and groups. The key is to use an Aperture that gives enough DOF to get everyone in focus (as a couple of other people have mentioned). I would say, for two people who are standing next to each other, using f/5.0 at an absolute min. If you have to pump up the ISO, do it. You can fix noise in PP, but not out of focus. As for some other technical aspects, I would say to pay close attention to your composition: Avoid negative space and fill the frame with the subject. Also, someone mentioned WB: use a shade or cloudy setting when outside.

As for a lens to get, i would HIGHLY suggest the Nikkor 50mm f/1.8D for $100. It is amazingly sharp by f/4.0 and for the price, nothing compares. On a side note, I have found that when taking portraits, primes are the way to go. 50mm is an excellent focal length, one of my bread and butter lenses. Good luck on your search!
05/08/2008 07:23:09 AM · #14
When shooting a group, does it help if they stand in a curved line? I.e. the people on the ends move a step closer, then those next to them half a step. Would that keep more in focus with a narrow DOF? Forgive me if my question is so stupid that you wish to cause me bodily harm. I am new to this optics thing.
05/08/2008 07:45:33 AM · #15
Originally posted by togtog:

When shooting a group, does it help if they stand in a curved line? I.e. the people on the ends move a step closer, then those next to them half a step. Would that keep more in focus with a narrow DOF? Forgive me if my question is so stupid that you wish to cause me bodily harm. I am new to this optics thing.


Not unless the lens doesn't have a "flat field." By flat field, I mean that the focal plane of the lens is just that, a flat plane. Most lenses have some slight curvature of the focus plane, but not enough to be really noticeable. With groups, you probably are not going to be using f/2.8 or wider apertures, more likely f/5.6 or narrower. Curvature of field at these apertures is a non-issue.
So the bottom line is, have your group stand in a straight line!
05/08/2008 07:48:23 AM · #16
Awesome thank you, I've been wondering about that all week now! :)
05/08/2008 07:50:55 AM · #17
I'd check out a depth of field calculator such as this one

Just putting some quick info in, at 70 mm with f2/8 from a distance of 10 feet, your depth of field is 0.69 feet. (A little over 8 inches). Change your aperture to f/8 and your depth increases to nearly two feet.

edit: oops! Missed the previous post suggesting this already

Message edited by author 2008-05-08 11:52:22.
05/08/2008 07:22:43 PM · #18
Thanks everyone...I will be practicing more this weekend and will let you know how it goes.
05/09/2008 02:00:25 AM · #19
Originally posted by CarpeLumen:

^ its an $80 lens, it will only do so much


This is more of an operator issue rather than an equipment fault - lens price doesn't automatically impart the ability to manage DOF.
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