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RolloR · 10-26-2010, 09:09 AM

i'm reading the photozone review. do the borders suck that much?

**NaClH2O** · 10-26-2010, 09:29 AM

Don't know about the 30mm Sigma, but on my 24mm Sigma they don't. I'm at work and don't have access to some shots, but I'll post some tonight.

NaCl(the sigma 24mm f/1.8 is quite a nice lens but not small by any stretch)H2O

Rory · 10-26-2010, 09:41 AM

There are a few photos in the lens review. Everything I've heard of the lens is pretty soft, and low contrast until around f4, IIRC. Doesn't mean it's a bad lens. I've been thinking of getting one for the focal length and speed; however, I seem to be using portrait on crop 50s and wider angles right now, so it doesn't make complete sense at the moment. I can wait until I run across a deal.

garethwebber · 10-26-2010, 09:56 AM

This was taken with a sigma 30. Nasty direct, pop-up flash. This is cropped - will dig out the original for you.

Found the full thing. Here it is. Simple jpeg export out of lightroom. No PP (quite obviously). f/4.

Gareth

Last edited by garethwebber; 10-26-2010 at 12:17 PM. Reason: Additional picture.

ramair455 · 10-26-2010, 01:18 PM - **2 Likes**

Sigma @ f1.8 or 2.0

garethwebber · 10-26-2010, 01:27 PM

Originally posted by ramair455

Sigma @ f1.8 or 2.0

Lovely shot.

Gareth

axl · 10-26-2010, 01:33 PM

Originally posted by garethwebber

Lovely shot.

Gareth

+1 to that! simply stunner

Kirivon · 10-26-2010, 05:39 PM

Originally posted by Rory

There are a few photos in the lens review. Everything I've heard of the lens is pretty soft, and low contrast until around f4, IIRC. Doesn't mean it's a bad lens. I've been thinking of getting one for the focal length and speed; however, I seem to be using portrait on crop 50s and wider angles right now, so it doesn't make complete sense at the moment. I can wait until I run across a deal.

Er, where have you heard that? I almost only ever use the 30 at f/1.4. Apertures above f/2.8 account for less than 10% of my usage of this lens--usually I'll switch to a different lens rather than stop down.

30mm @ f/1.4, 1/160, ISO 100

30mm @ f1/1.4, 1/60, ISO 1250

30mm @ f/1.4, 1/25, ISO400

30mm @ f/8, 1/60, ISO100 (one of three shots ever taken at f/8)

JHD · 10-26-2010, 05:52 PM

If you're shooting at f1.4, why would you even worry about the corners?

Rory · 10-26-2010, 05:57 PM

Originally posted by Kirivon

Er, where have you heard that? I almost only ever use the 30 at f/1.4. Apertures above f/2.8 account for less than 10% of my usage of this lens--usually I'll switch to a different lens rather than stop down.

Soft edges, soft corners, soft edges, etc Sigma 30mm F1.4 EX DC Lens Reviews - Pentax Third-Party Lens Review Database

Soft edges, low resolution, blah, blah

Sigma AF 30mm f/1.4 EX DC (Pentax K) Review / Test Report - Analysis

Kirivon · 10-26-2010, 06:36 PM

Originally posted by Rory

Soft edges, soft corners, soft edges, etc
...
Soft edges, low resolution, blah, blah

Saying it has soft edges is different from saying that it has low resolution or lacks contrast, though. Going off center resolution, the Sigma beats nearly every prime in the current lineup. It is also probably the most punchy lens I own in terms of contrast and color rendition, especially wide open.

The corner resolution isn't stellar but the nature of the lens makes it a non-factor. LoCAs are really well controlled and, outside of sharpness, the lens doesn't gain anything past f/1.4. Basically the Sigma is a lens you buy for the f/1.4, use at f/1.4, and love at f/1.4.

ramair455 · 10-26-2010, 07:40 PM

Thanks guys!

There is more to a lens that just "how" sharpness. The Sigma has wonderful personality and some of the creamist bokeh you'll ever see.

Smeggypants · 10-26-2010, 07:46 PM

Originally posted by JHD

If you're shooting at f1.4, why would you even worry about the corners?

^^^ post of the thread!!!

RolloR · 10-26-2010, 07:52 PM

Ooh wow there's such a thing as a Sigma 28mm f1.8 also for Pentax. And it seems cheaper than the 30/1.4. Anybody have that one also? 77mm filter thread though!

Rory · 10-26-2010, 08:28 PM

Originally posted by RolloR

Ooh wow there's such a thing as a Sigma 28mm f1.8 also for Pentax. And it seems cheaper than the 30/1.4. Anybody have that one also? 77mm filter thread though!

There is 20, 24, and 28mm in 1.8. 30 in 1.4.

10-26-2010, 09:09 AM	#1
RolloR Senior Member Join Date: Feb 2010 Photos: Albums Posts: 264	Sigma 30mm f1.4 sample photo request i'm reading the photozone review. do the borders suck that much?

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10-26-2010, 09:29 AM	#2
NaClH2O Site Supporter Join Date: Sep 2006 Location: Bronx NY Photos: Gallery \| Albums Posts: 5,631	Don't know about the 30mm Sigma, but on my 24mm Sigma they don't. I'm at work and don't have access to some shots, but I'll post some tonight. NaCl(the sigma 24mm f/1.8 is quite a nice lens but not small by any stretch)H2O

10-26-2010, 09:41 AM	#3
Rory Inactive Account Join Date: Jul 2010 Location: Chicago Photos: Gallery Posts: 672	There are a few photos in the lens review. Everything I've heard of the lens is pretty soft, and low contrast until around f4, IIRC. Doesn't mean it's a bad lens. I've been thinking of getting one for the focal length and speed; however, I seem to be using portrait on crop 50s and wider angles right now, so it doesn't make complete sense at the moment. I can wait until I run across a deal.

10-26-2010, 09:56 AM	#4
garethwebber Senior Member Join Date: Sep 2010 Location: Kent, UK Photos: Gallery \| Albums Posts: 104	This was taken with a sigma 30. Nasty direct, pop-up flash. This is cropped - will dig out the original for you. Found the full thing. Here it is. Simple jpeg export out of lightroom. No PP (quite obviously). f/4. Gareth Last edited by garethwebber; 10-26-2010 at 12:17 PM. Reason: Additional picture.

10-26-2010, 01:18 PM - 2 Likes	#5
ramair455 Senior Member Join Date: Sep 2009 Location: Okc Photos: Gallery Posts: 284	Sigma @ f1.8 or 2.0

10-26-2010, 01:27 PM	#6
garethwebber Senior Member Join Date: Sep 2010 Location: Kent, UK Photos: Gallery \| Albums Posts: 104	Originally posted by ramair455 Sigma @ f1.8 or 2.0 Lovely shot. Gareth

10-26-2010, 01:33 PM	#7
axl Veteran Member Join Date: Mar 2007 Location: Nove Zamky, Slovakia Photos: Gallery \| Albums Posts: 7,183	Originally posted by garethwebber Lovely shot. Gareth +1 to that! simply stunner

10-26-2010, 05:39 PM	#8
Kirivon Senior Member Join Date: Sep 2007 Location: Colorado Posts: 173	Originally posted by Rory There are a few photos in the lens review. Everything I've heard of the lens is pretty soft, and low contrast until around f4, IIRC. Doesn't mean it's a bad lens. I've been thinking of getting one for the focal length and speed; however, I seem to be using portrait on crop 50s and wider angles right now, so it doesn't make complete sense at the moment. I can wait until I run across a deal. Er, where have you heard that? I almost only ever use the 30 at f/1.4. Apertures above f/2.8 account for less than 10% of my usage of this lens--usually I'll switch to a different lens rather than stop down. 30mm @ f/1.4, 1/160, ISO 100 30mm @ f1/1.4, 1/60, ISO 1250 30mm @ f/1.4, 1/25, ISO400 30mm @ f/8, 1/60, ISO100 (one of three shots ever taken at f/8)

10-26-2010, 05:52 PM	#9
JHD Veteran Member Join Date: Jan 2010 Photos: Albums Posts: 1,406	If you're shooting at f1.4, why would you even worry about the corners?

10-26-2010, 05:57 PM	#10
Rory Inactive Account Join Date: Jul 2010 Location: Chicago Photos: Gallery Posts: 672	Originally posted by Kirivon Er, where have you heard that? I almost only ever use the 30 at f/1.4. Apertures above f/2.8 account for less than 10% of my usage of this lens--usually I'll switch to a different lens rather than stop down. Soft edges, soft corners, soft edges, etc Sigma 30mm F1.4 EX DC Lens Reviews - Pentax Third-Party Lens Review Database Soft edges, low resolution, blah, blah Sigma AF 30mm f/1.4 EX DC (Pentax K) Review / Test Report - Analysis

10-26-2010, 06:36 PM	#11
Kirivon Senior Member Join Date: Sep 2007 Location: Colorado Posts: 173	Originally posted by Rory Soft edges, soft corners, soft edges, etc ... Soft edges, low resolution, blah, blah Saying it has soft edges is different from saying that it has low resolution or lacks contrast, though. Going off center resolution, the Sigma beats nearly every prime in the current lineup. It is also probably the most punchy lens I own in terms of contrast and color rendition, especially wide open. The corner resolution isn't stellar but the nature of the lens makes it a non-factor. LoCAs are really well controlled and, outside of sharpness, the lens doesn't gain anything past f/1.4. Basically the Sigma is a lens you buy for the f/1.4, use at f/1.4, and love at f/1.4.

10-26-2010, 07:40 PM	#12
ramair455 Senior Member Join Date: Sep 2009 Location: Okc Photos: Gallery Posts: 284	Thanks guys! There is more to a lens that just "how" sharpness. The Sigma has wonderful personality and some of the creamist bokeh you'll ever see.

10-26-2010, 07:46 PM	#13
Smeggypants Veteran Member Join Date: Sep 2010 Posts: 1,536	Originally posted by JHD If you're shooting at f1.4, why would you even worry about the corners? ^^^ post of the thread!!!

10-26-2010, 07:52 PM	#14
RolloR Senior Member Join Date: Feb 2010 Photos: Albums Posts: 264 Original Poster	Ooh wow there's such a thing as a Sigma 28mm f1.8 also for Pentax. And it seems cheaper than the 30/1.4. Anybody have that one also? 77mm filter thread though!

10-26-2010, 08:28 PM	#15
Rory Inactive Account Join Date: Jul 2010 Location: Chicago Photos: Gallery Posts: 672	Originally posted by RolloR Ooh wow there's such a thing as a Sigma 28mm f1.8 also for Pentax. And it seems cheaper than the 30/1.4. Anybody have that one also? 77mm filter thread though! There is 20, 24, and 28mm in 1.8. 30 in 1.4.

Sigma 30mm f1.4 sample photo request

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