Do these seem reasonably sharp?

robert · 09-06-2022, 06:30 PM

These were taken with my K5iiS and the SMC M135mm F3.5. These are close to being a 100% crop.
They were taken at F3.5 and the barn was probably around 500 yards away. The first one probably 50yards
further back Does the sharpness
seem reasonable to you? Thanks for your input

MarkJerling · 09-06-2022, 06:46 PM

It's not too bad, but I see pretty substantial fringing on the edges and some chromatic aberration. What F-stop are these images? Shutter speed?

**Ray Cox** · 09-06-2022, 07:47 PM

The fact that you used the M135 F3.5 manual focus lens wide open at F3.5 I think they look good. If you stop the lens down a couple of notches I am sure that you will see better results, although I am surprised how well it did wide open.

cyclone3d · 09-06-2022, 08:50 PM

Are you using a hood? If not, adding one of the appropriate size should give you some more contrast and can help with perceived sharpness as well because there won't because the light will only be coming in from the wanted direction and stray light won't be washing the image out.

biz-engineer · 09-06-2022, 10:21 PM

White balance is off.
- Set white balance on the barn
- Correct fringing
- Sharpen in software

**StiffLegged** · 09-06-2022, 10:58 PM

If that’s near-100% then you’re asking us to pixel peep - looks good to me in that case.

**ramseybuckeye** · 09-07-2022, 01:50 AM

They seem reasonably sharp. Where is the barn, look familiar, but maybe you have posted pics of it before.

**ProfessorBuzz** · 09-07-2022, 09:19 AM

Is there a filter on the lens? Try removing it, and add a hood to get rid of stray light. Maybe try a circular polarizer to do something about the sky.

robert · 09-07-2022, 11:56 AM

Took the same subject today. Used a tripod, better lighting , Smaller lens opening and used a
lens hood.
Full photo and 100% crop

**Des** · 09-07-2022, 02:46 PM

If the barn really is 500 yards away, the image must be cropped a fair bit. If so, resolution is quite good.

If it is not cropped, I can't see that the barn could be 500 yards away. In that case, resolution is OK, but nothing special. I would expect as good or better with the DA 18-135 at 135mm.

robert · 09-07-2022, 03:06 PM

Originally posted by Des

If the barn really is 500 yards away, the image must be cropped a fair bit. If so, resolution is quite good.

If it is not cropped, I can't see that the barn could be 500 yards away. In that case, resolution is OK, but nothing special. I would expect as good or better with the DA 18-135 at 135mm.

Here is the original uncropped photo. The second one was cropped to about 100%

**Des** · 09-07-2022, 03:49 PM

Originally posted by robert

Here is the original uncropped photo.

Given the proportion of the frame that the barn occupies, I'd say resolution is OK. The M 135mm f3.5 has a lot of fans, but it would be interesting to compare a modern zoom at 135mm. I suspect that there would be more resolution and less aberrations.

MarkJerling · 09-07-2022, 04:14 PM

Originally posted by robert

Took the same subject today. Used a tripod, better lighting , Smaller lens opening and used a
lens hood.
Full photo and 100% crop

Was it a hot day when you took that?

robert · 09-07-2022, 06:10 PM - **1 Like**

Originally posted by MarkJerling

Was it a hot day when you took that?

The last photo was taken on a beautiful 75 degree day

---------- Post added 09-07-22 at 09:23 PM ----------

Originally posted by Des

Given the proportion of the frame that the barn occupies, I'd say resolution is OK. The M 135mm f3.5 has a lot of fans, but it would be interesting to compare a modern zoom at 135mm. I suspect that there would be more resolution and less aberrations.

I've seen very few samples of the 18-135 taken of landscapes at 135 and they didn't seem that impressive

MarkJerling · 09-07-2022, 06:29 PM - **1 Like**

Originally posted by robert

The last photo was taken on a beautiful 75 degree day[COLOR="Silver"]

Aha! If you look at the ridge line and the barn cladding you can see that waviness. That's the air movement - hot air. If you'd like that barn to be crisp in your photo, try earlier in the day when it's cooler.

09-06-2022, 06:30 PM	#1
robert Veteran Member Join Date: Jan 2007 Location: ohio Posts: 336	Do these seem reasonably sharp? These were taken with my K5iiS and the SMC M135mm F3.5. These are close to being a 100% crop. They were taken at F3.5 and the barn was probably around 500 yards away. The first one probably 50yards further back Does the sharpness seem reasonable to you? Thanks for your input

09-06-2022, 10:21 PM	#5
biz-engineer Pentaxian Join Date: Feb 2015 Photos: Gallery Posts: 12,232	White balance is off. - Set white balance on the barn - Correct fringing - Sharpen in software Last edited by biz-engineer; 09-06-2022 at 10:37 PM.

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09-06-2022, 06:46 PM	#2
MarkJerling Moderator Site Supporter Join Date: May 2012 Location: Wairarapa, New Zealand Photos: Gallery \| Albums Posts: 20,406	It's not too bad, but I see pretty substantial fringing on the edges and some chromatic aberration. What F-stop are these images? Shutter speed?

09-06-2022, 07:47 PM	#3
Ray Cox Site Supporter Join Date: Jan 2012 Location: Utica,Il Posts: 184	The fact that you used the M135 F3.5 manual focus lens wide open at F3.5 I think they look good. If you stop the lens down a couple of notches I am sure that you will see better results, although I am surprised how well it did wide open.

09-06-2022, 08:50 PM	#4
cyclone3d Veteran Member Join Date: Nov 2010 Location: Huntsville, Alabama Posts: 511	Are you using a hood? If not, adding one of the appropriate size should give you some more contrast and can help with perceived sharpness as well because there won't because the light will only be coming in from the wanted direction and stray light won't be washing the image out.

09-06-2022, 10:58 PM	#6
StiffLegged Site Supporter Join Date: Jan 2018 Photos: Gallery Posts: 4,620	If that’s near-100% then you’re asking us to pixel peep - looks good to me in that case.

09-07-2022, 01:50 AM	#7
ramseybuckeye Site Supporter Join Date: Apr 2009 Location: Hampstead, NC Photos: Gallery Posts: 17,292	They seem reasonably sharp. Where is the barn, look familiar, but maybe you have posted pics of it before.

09-07-2022, 09:19 AM	#8
ProfessorBuzz Loyal Site Supporter Join Date: Feb 2018 Posts: 1,903	Is there a filter on the lens? Try removing it, and add a hood to get rid of stray light. Maybe try a circular polarizer to do something about the sky.

09-07-2022, 11:56 AM	#9
robert Veteran Member Join Date: Jan 2007 Location: ohio Posts: 336 Original Poster	Took the same subject today. Used a tripod, better lighting , Smaller lens opening and used a lens hood. Full photo and 100% crop

09-07-2022, 02:46 PM	#10
Des Loyal Site Supporter Join Date: Jan 2014 Location: Victoria Australia Photos: Albums Posts: 6,423	If the barn really is 500 yards away, the image must be cropped a fair bit. If so, resolution is quite good. If it is not cropped, I can't see that the barn could be 500 yards away. In that case, resolution is OK, but nothing special. I would expect as good or better with the DA 18-135 at 135mm.

09-07-2022, 03:06 PM	#11
robert Veteran Member Join Date: Jan 2007 Location: ohio Posts: 336 Original Poster	Originally posted by Des If the barn really is 500 yards away, the image must be cropped a fair bit. If so, resolution is quite good. If it is not cropped, I can't see that the barn could be 500 yards away. In that case, resolution is OK, but nothing special. I would expect as good or better with the DA 18-135 at 135mm. Here is the original uncropped photo. The second one was cropped to about 100%

09-07-2022, 03:49 PM	#12
Des Loyal Site Supporter Join Date: Jan 2014 Location: Victoria Australia Photos: Albums Posts: 6,423	Originally posted by robert Here is the original uncropped photo. Given the proportion of the frame that the barn occupies, I'd say resolution is OK. The M 135mm f3.5 has a lot of fans, but it would be interesting to compare a modern zoom at 135mm. I suspect that there would be more resolution and less aberrations.

09-07-2022, 04:14 PM	#13
MarkJerling Moderator Site Supporter Join Date: May 2012 Location: Wairarapa, New Zealand Photos: Gallery \| Albums Posts: 20,406	Originally posted by robert Took the same subject today. Used a tripod, better lighting , Smaller lens opening and used a lens hood. Full photo and 100% crop Was it a hot day when you took that?

09-07-2022, 06:10 PM - 1 Like	#14
robert Veteran Member Join Date: Jan 2007 Location: ohio Posts: 336 Original Poster	Originally posted by MarkJerling Was it a hot day when you took that? The last photo was taken on a beautiful 75 degree day ---------- Post added 09-07-22 at 09:23 PM ---------- Originally posted by Des Given the proportion of the frame that the barn occupies, I'd say resolution is OK. The M 135mm f3.5 has a lot of fans, but it would be interesting to compare a modern zoom at 135mm. I suspect that there would be more resolution and less aberrations. I've seen very few samples of the 18-135 taken of landscapes at 135 and they didn't seem that impressive

09-07-2022, 06:29 PM - 1 Like	#15
MarkJerling Moderator Site Supporter Join Date: May 2012 Location: Wairarapa, New Zealand Photos: Gallery \| Albums Posts: 20,406	Originally posted by robert The last photo was taken on a beautiful 75 degree day[COLOR="Silver"] Aha! If you look at the ridge line and the barn cladding you can see that waviness. That's the air movement - hot air. If you'd like that barn to be crisp in your photo, try earlier in the day when it's cooler.