Win a Pentax Limited Lens: Raffle Now Live!

normhead · 10-21-2018, 09:12 AM - **4 Likes**

And some recent K-3 landscapes.

K-3 and DA 18-135

**RGlasel** · 10-23-2018, 11:53 AM - **1 Like**

Went for a walk along the South Saskatchewan River this morning.

**Des** · 10-24-2018, 02:18 AM - **3 Likes**

Originally posted by grey03

Here's my first attempt to upload a picture on this site:Morning at Biosphere 2 in Oracle, Arizona

Welcome to PF and welcome this thread. Very nice contribution to kick off.

Inquisitive merino flock, Hamilton, Tasmania. K-S2 + DA 18-135.

**rayallen** · 10-24-2018, 02:19 PM - **2 Likes**

Originally posted by Des

Inquisitive merino flock, Hamilton, Tasmania. K-S2 + DA 18-135.

And I think that they are all saying "Oh look, he's got a Pentax".

**Des** · 10-24-2018, 02:29 PM - **1 Like**

Originally posted by rayallen

And I think that they are all saying "Oh look, he's got a Pentax".

More prosaic, but more likely, "Has he got some food for us? Nothing but dry grass here."

dstar · 10-24-2018, 10:17 PM

Originally posted by normhead

And some recent K-3 landscapes.

K-3 and DA 18-135

so lovely dog nice forest picture

**Kevin B123** · 10-28-2018, 01:05 PM - **2 Likes**

Revisited Petworth park for the rut. Didn't need to stalk the herd as standing among the trees the Stags would just walk up to you.

Attached Images

View Picture EXIF

View Picture EXIF

**Oktyabr** · 10-28-2018, 04:54 PM - **1 Like**

I've noted that my copy seems to be very touchy with lower light situations, making a lot of grain even at low ISO. In brighter light, wider aperture, or longer exposure, it's not too bad. I'm starting to get more comfortable with it as I strive to find good reasons to keep it instead of some (dubious) upgrade.

---------- Post added 10-28-18 at 04:56 PM ----------

**Des** · 10-28-2018, 06:32 PM - **1 Like**

Originally posted by Oktyabr

I've noted that my copy seems to be very touchy with lower light situations, making a lot of grain even at low ISO. In brighter light, wider aperture, or longer exposure, it's not too bad. I'm starting to get more comfortable with it as I strive to find good reasons to keep it instead of some (dubious) upgrade.

You'd think that excessive grain would be a function of the camera rather than the lens. Low light affects colour and contrast, even with a low ISO. Conversely, images in good light can do well even with a high ISO. I can't say that I find the 18-135 any different from other lenses in that regard. For the images on the beach, it just looks like a low-contrast scene to me. You could just bump up the exposure and contrast a bit in post if you want more subject detail.

**Oktyabr** · 10-28-2018, 07:00 PM

Originally posted by Des

You'd think that excessive grain would be a function of the camera rather than the lens. Low light affects colour and contrast, even with a low ISO. Conversely, images in good light can do well even with a high ISO. I can't say that I find the 18-135 any different from other lenses in that regard. For the images on the beach, it just looks like a low-contrast scene to me. You could just bump up the exposure and contrast a bit in post if you want more subject detail.

That's what I've thought too but then I've slapped on my 55-300 PLM (at 55-100 FL), 100mm WR Macro, or even my M 50mm 1.7 and the graininess goes away. I'm not saying it's terrible but my copy of the 18-135 just seems more finicky to fine tuned adjustment than my other glass. Maybe it has something to do with camera firmware and it's internal profile for this lens?

**mattb123** · 10-28-2018, 08:11 PM - **2 Likes**

Out riding today with K-3 & 18-135

**RGlasel** · 10-28-2018, 10:06 PM - **2 Likes**

Originally posted by Oktyabr

Maybe it has something to do with camera firmware and it's internal profile for this lens?

You could try saving as RAW and make comparisons with post-processing software, but AFAIK the built-in profiles will adjust only distortion by lens ID and adjust colours by camera body. Random noise is a function of the sensor and the camera's processor, but some lenses produce images with more contrast, even if the files are processed the same and better contrast looks less noisy/grainy. Aperture and focal length also play a role in how distinct the changes in colour appear and while the 55-300 doesn't offer wider apertures or more contrast at the same focal length, at longer focal lengths you will get more subject isolation from telephoto compression. Another possibility is a decentered lens or problems with back or front focus. The D-FA 100 Macro is a sharper lens and lets in more light, the f1.7 50's have less distortion (and no auto-focus problems

), but when I compare apples to apples between the DA 18-135 and DA 55-300, the results are very similar.

**Cerebum** · 10-29-2018, 12:34 AM - **4 Likes**

I was photographing the inside of an old house but I couldn't resist photographing its location too. Its at the bottom of the track, by the bridge

**Kevin B123** · 10-29-2018, 03:05 PM - **3 Likes**

From the summer, with this versatile lens.

**RGlasel** · 10-29-2018, 04:42 PM - **1 Like**

Originally posted by Kevin B123

From the summer, with this versatile lens.

Very nicely composed photo!

10-28-2018, 04:54 PM - 1 Like	#2618
Oktyabr Loyal Site Supporter Join Date: Oct 2018 Photos: Gallery \| Albums Posts: 389	I've noted that my copy seems to be very touchy with lower light situations, making a lot of grain even at low ISO. In brighter light, wider aperture, or longer exposure, it's not too bad. I'm starting to get more comfortable with it as I strive to find good reasons to keep it instead of some (dubious) upgrade. ---------- Post added 10-28-18 at 04:56 PM ---------- Last edited by Oktyabr; 10-30-2018 at 04:54 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
XR Rikenon 135/2.8 OR Carl Zeiss Jena 135/3.5 (zebra)	adicaciula	Pentax SLR Lens Discussion	2	02-20-2012 02:29 AM
Takumar 135 2.5 vs Super Tak 135 3.5, both bayonet mount, which is better?	chongmic	Pentax SLR Lens Discussion	7	04-09-2011 11:55 PM

10-21-2018, 09:12 AM - 4 Likes	#2611
normhead Pentaxian Join Date: Jun 2007 Location: Near Algonquin Park Photos: Gallery \| Albums Posts: 40,451	And some recent K-3 landscapes. K-3 and DA 18-135

10-23-2018, 11:53 AM - 1 Like	#2612
RGlasel Site Supporter Join Date: Sep 2013 Location: Saskatoon Photos: Gallery \| Albums Posts: 3,229	Went for a walk along the South Saskatchewan River this morning.

10-24-2018, 02:18 AM - 3 Likes	#2613
Des Loyal Site Supporter Join Date: Jan 2014 Location: Victoria Australia Photos: Albums Posts: 6,424	Originally posted by grey03 Here's my first attempt to upload a picture on this site:Morning at Biosphere 2 in Oracle, Arizona Welcome to PF and welcome this thread. Very nice contribution to kick off. Inquisitive merino flock, Hamilton, Tasmania. K-S2 + DA 18-135.

10-24-2018, 02:19 PM - 2 Likes	#2614
rayallen Site Supporter Join Date: Jul 2007 Location: Forresters Beach, NSW, Australia. Photos: Gallery \| Albums Posts: 3,014	Originally posted by Des Inquisitive merino flock, Hamilton, Tasmania. K-S2 + DA 18-135. And I think that they are all saying "Oh look, he's got a Pentax".

10-24-2018, 02:29 PM - 1 Like	#2615
Des Loyal Site Supporter Join Date: Jan 2014 Location: Victoria Australia Photos: Albums Posts: 6,424	Originally posted by rayallen And I think that they are all saying "Oh look, he's got a Pentax". More prosaic, but more likely, "Has he got some food for us? Nothing but dry grass here."

10-24-2018, 10:17 PM	#2616
dstar Pentaxian Join Date: Nov 2007 Location: Albuquerque NM Photos: Albums Posts: 475	Originally posted by normhead And some recent K-3 landscapes. K-3 and DA 18-135 so lovely dog nice forest picture

10-28-2018, 06:32 PM - 1 Like	#2619
Des Loyal Site Supporter Join Date: Jan 2014 Location: Victoria Australia Photos: Albums Posts: 6,424	Originally posted by Oktyabr I've noted that my copy seems to be very touchy with lower light situations, making a lot of grain even at low ISO. In brighter light, wider aperture, or longer exposure, it's not too bad. I'm starting to get more comfortable with it as I strive to find good reasons to keep it instead of some (dubious) upgrade. You'd think that excessive grain would be a function of the camera rather than the lens. Low light affects colour and contrast, even with a low ISO. Conversely, images in good light can do well even with a high ISO. I can't say that I find the 18-135 any different from other lenses in that regard. For the images on the beach, it just looks like a low-contrast scene to me. You could just bump up the exposure and contrast a bit in post if you want more subject detail.

10-28-2018, 07:00 PM	#2620
Oktyabr Loyal Site Supporter Join Date: Oct 2018 Photos: Gallery \| Albums Posts: 389	Originally posted by Des You'd think that excessive grain would be a function of the camera rather than the lens. Low light affects colour and contrast, even with a low ISO. Conversely, images in good light can do well even with a high ISO. I can't say that I find the 18-135 any different from other lenses in that regard. For the images on the beach, it just looks like a low-contrast scene to me. You could just bump up the exposure and contrast a bit in post if you want more subject detail. That's what I've thought too but then I've slapped on my 55-300 PLM (at 55-100 FL), 100mm WR Macro, or even my M 50mm 1.7 and the graininess goes away. I'm not saying it's terrible but my copy of the 18-135 just seems more finicky to fine tuned adjustment than my other glass. Maybe it has something to do with camera firmware and it's internal profile for this lens?

10-28-2018, 08:11 PM - 2 Likes	#2621
mattb123 Site Supporter Join Date: Apr 2010 Location: Colorado High Country Photos: Gallery Posts: 10,874	Out riding today with K-3 & 18-135

10-28-2018, 10:06 PM - 2 Likes	#2622
RGlasel Site Supporter Join Date: Sep 2013 Location: Saskatoon Photos: Gallery \| Albums Posts: 3,229	Originally posted by Oktyabr Maybe it has something to do with camera firmware and it's internal profile for this lens? You could try saving as RAW and make comparisons with post-processing software, but AFAIK the built-in profiles will adjust only distortion by lens ID and adjust colours by camera body. Random noise is a function of the sensor and the camera's processor, but some lenses produce images with more contrast, even if the files are processed the same and better contrast looks less noisy/grainy. Aperture and focal length also play a role in how distinct the changes in colour appear and while the 55-300 doesn't offer wider apertures or more contrast at the same focal length, at longer focal lengths you will get more subject isolation from telephoto compression. Another possibility is a decentered lens or problems with back or front focus. The D-FA 100 Macro is a sharper lens and lets in more light, the f1.7 50's have less distortion (and no auto-focus problems ), but when I compare apples to apples between the DA 18-135 and DA 55-300, the results are very similar.

10-29-2018, 12:34 AM - 4 Likes	#2623
Cerebum Site Supporter Join Date: Oct 2017 Location: Lancaster Photos: Gallery Posts: 3,829	I was photographing the inside of an old house but I couldn't resist photographing its location too. Its at the bottom of the track, by the bridge

10-29-2018, 04:42 PM - 1 Like	#2625
RGlasel Site Supporter Join Date: Sep 2013 Location: Saskatoon Photos: Gallery \| Albums Posts: 3,229	Originally posted by Kevin B123 From the summer, with this versatile lens. Very nicely composed photo!

DA 18-135 WR, Show us what it can do

Win a Pentax Limited Lens: Raffle Now Live!