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Jewelltrail · 06-26-2009, 10:43 AM

Quote:

Ben Edict: The good reason (from Sigm's point of view) might also be detrimental to IQ: lowering production cost, by using a "streamlined" manufacturing process or using cheaper material or employing easier (aka cheaper) to make lens curvatures. We simply do not know yet.

Ben

__________________

Excellent point--thanks Ben!

jgredline · 06-26-2009, 10:48 AM

Originally posted by Jewelltrail

__________________

Excellent point--thanks Ben!

I too agree!

Jewelltrail · 06-26-2009, 10:51 AM

Quote:

jgredline: I almost always use hyperfocal. On this lens it is no problem at all as it has such a short throw.

Aha! I have been trying to figure the advantage your shots seem to have--they truly are terrific. You have won a convert in me--out with my calculator & on to the hyperfocal. After all, if these memories are worth preserving with a DSLR and the accompanying bag o tricks, they certainly are worth using the hyperfocal too.

ndy4eva · 06-27-2009, 12:14 PM

Thanks for the tips...

Originally posted by jgredline

If I may make a suggestion to those future owners of this lens. Keep in mind that it is a ''wide'' lens and in order to use it effectively, the idea is to capture as much detail as possible. If I may use Jewelltrail's example above, notice how it is pretty sharp out from about the three to four foot mark and retains that acceptable focus all the way to the back of the house..This lens has great DOF and should be used this way ''IMO''...Forget about bokeh, this is not the lens for this...In its proper use, it is magnificent. Use the distortion it produces at 10mm to 14mm to get creative. Try and keep the lens in the F/8 to F/11 range unless it is getting dark and you need the light. For those family portraits and places where the distortion is not desired, shoot at between 15-20mm. This lens also quite sharp in the center...

ndy4eva · 06-27-2009, 12:19 PM

Maybe I sound dumb... but what is hyperfocal?

kristoffon · 06-27-2009, 01:35 PM

Originally posted by ndy4eva

Maybe I sound dumb... but what is hyperfocal?

Hyperfocal distance - Wikipedia, the free encyclopedia

jgredline · 06-27-2009, 08:01 PM

Thanks folks for the kind words.
Here is a very helpful site as well.
Online Depth of Field Calculator

Jewelltrail · 06-29-2009, 10:22 AM

This weekend with the Sigma 10-20mm 4-5.6.

Jewelltrail · 07-02-2009, 10:57 AM

I feel impelled to throw a 10mm shot in. After all, this focal length is very attractive to a hiker, even though I find endless other uses for it too.

jgredline · 07-02-2009, 11:05 AM

Originally posted by Jewelltrail

I feel impelled to throw a 10mm shot in. After all, this focal length is very attractive to a hiker, even though I find endless other uses for it too.

and what a fine image at that!

Jewelltrail · 07-02-2009, 11:16 AM

Quote:

jgredline: and what a fine image at that!

Thanks J! When I get my hands on the CPL you recommend, I hope to raise the quality of shots. Thanks again for all the help.

jgredline · 07-02-2009, 11:18 AM

The cpl will help it allot, more than you know. Turns out I have the cheap tiffen one. Works great.. All my others are B+W

Jewelltrail · 07-02-2009, 11:29 AM

Quote:

jgredline: Turns out I have the cheap tiffen one. Works great..

Okay, where can I pick it up?

EDIT: I just found one at Amazon--great deal through Adorama somehow. Can't wait to get it & shoot, shoot, shoot!!!

jgredline · 07-02-2009, 09:33 PM

Believe me, if not for the polarizer I would not have blue skys in 90% of my images. You will enjoy the lens during the day much more.

jgredline · 07-02-2009, 10:13 PM

No PP, Just that tiffen Polarizer in the early morning. These are about a year old, maybe more. What I do know is that these where the first with the cpl.

06-27-2009, 12:19 PM	#50
ndy4eva Forum Member Join Date: Jun 2009 Location: Vancouver, BC Canada Posts: 70 Original Poster	hyperfocal? Maybe I sound dumb... but what is hyperfocal?

06-29-2009, 10:22 AM	#53
Jewelltrail Veteran Member Join Date: May 2008 Location: Rhode Island Photos: Albums Posts: 4,180	This weekend with the Sigma 10-20mm 4-5.6. Last edited by Jewelltrail; 09-25-2009 at 09:11 AM.

07-02-2009, 10:57 AM	#54
Jewelltrail Veteran Member Join Date: May 2008 Location: Rhode Island Photos: Albums Posts: 4,180	I feel impelled to throw a 10mm shot in. After all, this focal length is very attractive to a hiker, even though I find endless other uses for it too. Last edited by Jewelltrail; 09-25-2009 at 09:11 AM.

07-02-2009, 11:29 AM	#58
Jewelltrail Veteran Member Join Date: May 2008 Location: Rhode Island Photos: Albums Posts: 4,180	Quote: jgredline: Turns out I have the cheap tiffen one. Works great.. Okay, where can I pick it up? EDIT: I just found one at Amazon--great deal through Adorama somehow. Can't wait to get it & shoot, shoot, shoot!!! Last edited by Jewelltrail; 07-02-2009 at 11:42 AM. Reason: update

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06-26-2009, 10:43 AM	#46
Jewelltrail Veteran Member Join Date: May 2008 Location: Rhode Island Photos: Albums Posts: 4,180	Quote: Ben Edict: The good reason (from Sigm's point of view) might also be detrimental to IQ: lowering production cost, by using a "streamlined" manufacturing process or using cheaper material or employing easier (aka cheaper) to make lens curvatures. We simply do not know yet. Ben __________________ Excellent point--thanks Ben!

06-26-2009, 10:48 AM	#47
jgredline Veteran Member Join Date: Oct 2007 Location: LosAngeles, Ca. Photos: Albums Posts: 10,628	Originally posted by Jewelltrail __________________ Excellent point--thanks Ben! I too agree!

06-26-2009, 10:51 AM	#48
Jewelltrail Veteran Member Join Date: May 2008 Location: Rhode Island Photos: Albums Posts: 4,180	Quote: jgredline: I almost always use hyperfocal. On this lens it is no problem at all as it has such a short throw. Aha! I have been trying to figure the advantage your shots seem to have--they truly are terrific. You have won a convert in me--out with my calculator & on to the hyperfocal. After all, if these memories are worth preserving with a DSLR and the accompanying bag o tricks, they certainly are worth using the hyperfocal too.

06-27-2009, 12:14 PM	#49
ndy4eva Forum Member Join Date: Jun 2009 Location: Vancouver, BC Canada Posts: 70 Original Poster	Thanks for the tips... Originally posted by jgredline If I may make a suggestion to those future owners of this lens. Keep in mind that it is a ''wide'' lens and in order to use it effectively, the idea is to capture as much detail as possible. If I may use Jewelltrail's example above, notice how it is pretty sharp out from about the three to four foot mark and retains that acceptable focus all the way to the back of the house..This lens has great DOF and should be used this way ''IMO''...Forget about bokeh, this is not the lens for this...In its proper use, it is magnificent. Use the distortion it produces at 10mm to 14mm to get creative. Try and keep the lens in the F/8 to F/11 range unless it is getting dark and you need the light. For those family portraits and places where the distortion is not desired, shoot at between 15-20mm. This lens also quite sharp in the center...

06-27-2009, 01:35 PM	#51
kristoffon Veteran Member Join Date: Aug 2008 Location: Brazil Posts: 532	Originally posted by ndy4eva Maybe I sound dumb... but what is hyperfocal? Hyperfocal distance - Wikipedia, the free encyclopedia

06-27-2009, 08:01 PM	#52
jgredline Veteran Member Join Date: Oct 2007 Location: LosAngeles, Ca. Photos: Albums Posts: 10,628	Thanks folks for the kind words. Here is a very helpful site as well. Online Depth of Field Calculator

07-02-2009, 11:05 AM	#55
jgredline Veteran Member Join Date: Oct 2007 Location: LosAngeles, Ca. Photos: Albums Posts: 10,628	Originally posted by Jewelltrail I feel impelled to throw a 10mm shot in. After all, this focal length is very attractive to a hiker, even though I find endless other uses for it too. and what a fine image at that!

07-02-2009, 11:16 AM	#56
Jewelltrail Veteran Member Join Date: May 2008 Location: Rhode Island Photos: Albums Posts: 4,180	Quote: jgredline: and what a fine image at that! Thanks J! When I get my hands on the CPL you recommend, I hope to raise the quality of shots. Thanks again for all the help.

07-02-2009, 11:18 AM	#57
jgredline Veteran Member Join Date: Oct 2007 Location: LosAngeles, Ca. Photos: Albums Posts: 10,628	The cpl will help it allot, more than you know. Turns out I have the cheap tiffen one. Works great.. All my others are B+W

07-02-2009, 09:33 PM	#59
jgredline Veteran Member Join Date: Oct 2007 Location: LosAngeles, Ca. Photos: Albums Posts: 10,628	Believe me, if not for the polarizer I would not have blue skys in 90% of my images. You will enjoy the lens during the day much more.

07-02-2009, 10:13 PM	#60
jgredline Veteran Member Join Date: Oct 2007 Location: LosAngeles, Ca. Photos: Albums Posts: 10,628	No PP, Just that tiffen Polarizer in the early morning. These are about a year old, maybe more. What I do know is that these where the first with the cpl.

Sigma 10-20mm F3.5 EX DC HSM

Win a Pentax Limited Lens: Raffle Now Live!