Sharpness/bokeh test various lenses

Prox-iee · 02-25-2011, 04:22 PM

I was bored today, so I made a controlled environment with a tripod and strobe to test the sharpness and to see how well they process the bokeh. Every link is an unresized photo with confirmed focus in the middle

Every shot was at iso 100 at 5.6

pentax da 18-55mm 3.5-5.6 at 50mm (this makes me cry)
http://img163.imageshack.us/img163/9735/da18553556.jpg

pentax smc-a 50mm 1.7
http://img222.imageshack.us/img222/3641/a5017.jpg

Pentax smc-m 50mm 1.7
http://img84.imageshack.us/img84/765/m5017.jpg

m42 zeiss jena tessar 50mm 2.8
http://img822.imageshack.us/img822/7100/zeissjenatessar5028.jpg

m42 helios 58mm 2.8
http://img823.imageshack.us/img823/1295/helios5828.jpg

quantaray 35-80mm 4-5.6 at 50mm
http://img16.imageshack.us/img16/9559/quantaray3580456.jpg

minolta 50mm 1.4 (focus is JUST off)
http://img135.imageshack.us/img135/5661/minolta5014.jpg

Zoom Vs Prime at 135mm

sears 135mm 2.8
http://img43.imageshack.us/img43/4650/sears13528.jpg

Pentax smc-a 70-210mm 4-32
http://img192.imageshack.us/img192/632/a70210432.jpg

imtheguy · 02-25-2011, 05:03 PM

The geek in me really enjoys looking over the results of other peoples time consuming tests and comparisons. Thanks for doing something useful (to me) when you are bored. Poor kit zoom didnt have a fighting chance though shot wide-open compared to primes stopped down. Maybe thats why you were crying?

Colbyt · 02-25-2011, 05:50 PM

I know you were doing bokeh.

An interesting tidbit of information for DOF would be how far forward and rear the bottles were to the tape measure. The focus point was the tape?

Prox-iee · 02-25-2011, 08:10 PM - **1 Like**

Originally posted by Colbyt

I know you were doing bokeh.

An interesting tidbit of information for DOF would be how far forward and rear the bottles were to the tape measure. The focus point was the tape?

each bottle was about 2 inches thick, and the front of a bottle was parallel with the back of the bottle in front of it. The tape measure is also ~2" thick and has the same distance from the other bottle. On top of that, the keyboard spans the entire setup. The camera was ~3' from the setup and the hookah was ~3' behind the setup.

The tape was the focus point, and it is ~1cm from the Evan Williams Honey Reserve

Prox-iee · 02-25-2011, 08:11 PM

Originally posted by imtheguy

The geek in me really enjoys looking over the results of other peoples time consuming tests and comparisons. Thanks for doing something useful (to me) when you are bored. Poor kit zoom didnt have a fighting chance though shot wide-open compared to primes stopped down. Maybe thats why you were crying?

I dunno, the quantaray blew it away haha

**Kammerer** · 02-26-2011, 06:41 PM

Originally posted by Prox-iee

I dunno, the quantaray blew it away haha

Prox-iee, greetings from a former NH resident.

The focus on there shots appears to be in different places. Look at the Enter key on your keyboard - on the 18-55 shot it is sharper than on the Quantaray shot. Either your copy of 18-55 has FF, or you need to repeat the shoot... now let's see how much is left in these bottles by now

Prox-iee · 02-26-2011, 11:14 PM

Originally posted by Kammerer

Prox-iee, greetings from a former NH resident.

The focus on there shots appears to be in different places. Look at the Enter key on your keyboard - on the 18-55 shot it is sharper than on the Quantaray shot. Either your copy of 18-55 has FF, or you need to repeat the shoot... now let's see how much is left in these bottles by now

Yeah I noticed that. The DA had auto focus, and it was confirmed focus on the tape measure. The quantaray is also confirmed on the tape measure. I had it on AF.S mode so it wouldn't take the picture unless it was confirmed focus on the center =\

Prox-iee · 02-27-2011, 01:10 PM

all taken at 5.6, first focused on the measuring tape, second on the metal piece of the measuring tape thats laying down

Quantaray 35-80
test1
http://img163.imageshack.us/img163/3283/dcim0002.jpg
test2
http://img41.imageshack.us/img41/9014/dcim0003.jpg

Pentax Da 18-55
test1
http://img84.imageshack.us/img84/50/jhvw.jpg
test2
http://img35.imageshack.us/img35/6098/dcim0005.jpg

I think I know whats going on. The DA lens is build for crop sensors where the quantaray is built for FF. FF lenses on crop bodies have a bigger 'sweet sharp spot'

02-25-2011, 04:22 PM	#1
Prox-iee Inactive Account Join Date: Dec 2008 Location: NH Photos: Gallery Posts: 107	Sharpness/bokeh test various lenses I was bored today, so I made a controlled environment with a tripod and strobe to test the sharpness and to see how well they process the bokeh. Every link is an unresized photo with confirmed focus in the middle Every shot was at iso 100 at 5.6 pentax da 18-55mm 3.5-5.6 at 50mm (this makes me cry) http://img163.imageshack.us/img163/9735/da18553556.jpg pentax smc-a 50mm 1.7 http://img222.imageshack.us/img222/3641/a5017.jpg Pentax smc-m 50mm 1.7 http://img84.imageshack.us/img84/765/m5017.jpg m42 zeiss jena tessar 50mm 2.8 http://img822.imageshack.us/img822/7100/zeissjenatessar5028.jpg m42 helios 58mm 2.8 http://img823.imageshack.us/img823/1295/helios5828.jpg quantaray 35-80mm 4-5.6 at 50mm http://img16.imageshack.us/img16/9559/quantaray3580456.jpg minolta 50mm 1.4 (focus is JUST off) http://img135.imageshack.us/img135/5661/minolta5014.jpg Zoom Vs Prime at 135mm sears 135mm 2.8 http://img43.imageshack.us/img43/4650/sears13528.jpg Pentax smc-a 70-210mm 4-32 http://img192.imageshack.us/img192/632/a70210432.jpg

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Look what I found (some old lenses, bokeh test on 28/2.8 and 40/2.8)	melander	Pentax SLR Lens Discussion	2	12-31-2010 07:11 AM
FA43 sharpness test	rparmar	Pentax SLR Lens Discussion	17	09-01-2010 07:19 AM
Takumar 1:3.5/28 Sharpness test	eccs19	Pentax SLR Lens Discussion	2	04-10-2009 12:22 PM
Takumar 1:4/100 sharpness test	eccs19	Pentax SLR Lens Discussion	0	04-10-2009 09:18 AM
FA 50mm f/1.4 bokeh and sharpness - an accidental study	m8o	Post Your Photos!	3	02-11-2008 05:15 AM

02-25-2011, 05:03 PM	#2
imtheguy Site Supporter Join Date: Mar 2009 Location: Virginia Beach Photos: Gallery \| Albums Posts: 2,950	The geek in me really enjoys looking over the results of other peoples time consuming tests and comparisons. Thanks for doing something useful (to me) when you are bored. Poor kit zoom didnt have a fighting chance though shot wide-open compared to primes stopped down. Maybe thats why you were crying?

02-25-2011, 05:50 PM	#3
Colbyt Veteran Member Join Date: Dec 2010 Location: Central Kentucky Photos: Gallery \| Albums Posts: 1,418	I know you were doing bokeh. An interesting tidbit of information for DOF would be how far forward and rear the bottles were to the tape measure. The focus point was the tape?

02-25-2011, 08:10 PM - 1 Like	#4
Prox-iee Inactive Account Join Date: Dec 2008 Location: NH Photos: Gallery Posts: 107 Original Poster	Originally posted by Colbyt I know you were doing bokeh. An interesting tidbit of information for DOF would be how far forward and rear the bottles were to the tape measure. The focus point was the tape? each bottle was about 2 inches thick, and the front of a bottle was parallel with the back of the bottle in front of it. The tape measure is also ~2" thick and has the same distance from the other bottle. On top of that, the keyboard spans the entire setup. The camera was ~3' from the setup and the hookah was ~3' behind the setup. The tape was the focus point, and it is ~1cm from the Evan Williams Honey Reserve

02-25-2011, 08:11 PM	#5
Prox-iee Inactive Account Join Date: Dec 2008 Location: NH Photos: Gallery Posts: 107 Original Poster	Originally posted by imtheguy The geek in me really enjoys looking over the results of other peoples time consuming tests and comparisons. Thanks for doing something useful (to me) when you are bored. Poor kit zoom didnt have a fighting chance though shot wide-open compared to primes stopped down. Maybe thats why you were crying? I dunno, the quantaray blew it away haha

02-26-2011, 06:41 PM	#6
Kammerer Site Supporter Join Date: Mar 2010 Location: Hampton Roads Photos: Albums Posts: 367	Originally posted by Prox-iee I dunno, the quantaray blew it away haha Prox-iee, greetings from a former NH resident. The focus on there shots appears to be in different places. Look at the Enter key on your keyboard - on the 18-55 shot it is sharper than on the Quantaray shot. Either your copy of 18-55 has FF, or you need to repeat the shoot... now let's see how much is left in these bottles by now

02-26-2011, 11:14 PM	#7
Prox-iee Inactive Account Join Date: Dec 2008 Location: NH Photos: Gallery Posts: 107 Original Poster	Originally posted by Kammerer Prox-iee, greetings from a former NH resident. The focus on there shots appears to be in different places. Look at the Enter key on your keyboard - on the 18-55 shot it is sharper than on the Quantaray shot. Either your copy of 18-55 has FF, or you need to repeat the shoot... now let's see how much is left in these bottles by now Yeah I noticed that. The DA had auto focus, and it was confirmed focus on the tape measure. The quantaray is also confirmed on the tape measure. I had it on AF.S mode so it wouldn't take the picture unless it was confirmed focus on the center =\

02-27-2011, 01:10 PM	#8
Prox-iee Inactive Account Join Date: Dec 2008 Location: NH Photos: Gallery Posts: 107 Original Poster	all taken at 5.6, first focused on the measuring tape, second on the metal piece of the measuring tape thats laying down Quantaray 35-80 test1 http://img163.imageshack.us/img163/3283/dcim0002.jpg test2 http://img41.imageshack.us/img41/9014/dcim0003.jpg Pentax Da 18-55 test1 http://img84.imageshack.us/img84/50/jhvw.jpg test2 http://img35.imageshack.us/img35/6098/dcim0005.jpg I think I know whats going on. The DA lens is build for crop sensors where the quantaray is built for FF. FF lenses on crop bodies have a bigger 'sweet sharp spot'