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pinholecam · 10-09-2018, 10:24 PM - **1 Like**

Originally posted by kernos

It would be really nice to see all three lenses on a portrait study with really good natural light, that's the intended use of this type of lens. It is really hard to like one over the other based on this particular scene.

Ideally, yes, but usually there are difficulties.

1. Subject needs to stand still
2. Any change in expression, even slight difference in head position can add subjectivity (ie. like/dislike) to the photo
3. Needs a willing model

Maybe a statue in a park would be the closest, but those are usually in a boring dark color.

For my own lenses, I just can't be bothered with such comparisons and use them as the 'lens of the day' and will always conclude that I like them all

Kim Coxon · 10-10-2018, 12:52 AM

Originally posted by torashi

I think it's a nice test, and very interesting, but should be reshot with a controlled light source. Sunlight varies constantly in intensity, even if our eyes can't see it, specially with clouds and at sunset when the light has to cross a lot of atmosphere. Test "A" seems burnt and overexposed.

No clouds and each exposure taken using manual settings using a Gossen Sixtomat meter in incident mode to take the readings.

Dericali · 10-10-2018, 02:42 AM

I would say lens B is my favorite. I think I'll wait for the new Pentax 85mm

Kim Coxon · 10-10-2018, 03:09 AM

Originally posted by Dericali

I would say lens B is my favorite. I think I'll wait for the new Pentax 85mm

If the new Pentax 85 is designed along the same parameters as the new 50. It is likely to be very big, probably at least a 77mm filter thread and very expensive. I would guess at least £2000 and probably more.

wanderer2 · 10-10-2018, 03:58 AM

Just a thought - It also would be nice to compare the lenses stopped down.

Kim Coxon · 10-10-2018, 04:19 AM

Originally posted by wanderer2

Just a thought - It also would be nice to compare the lenses stopped down.

Only so many hours in the day.

I mainly did this because several people asked how they compared when I posted about getting the A* lens.

Kim Coxon · 10-10-2018, 04:21 AM

Yesterday the shots were taken in the sun and so very high contrast. I thought it might be useful to repeat the exercise today while the flower was still in the shade.

So first the 77 ltd

Attached Images

View Picture EXIF

View Picture EXIF

Kim Coxon · 10-10-2018, 04:22 AM

Lens A

Kim Coxon · 10-10-2018, 04:23 AM

Lens B

Kim Coxon · 10-10-2018, 04:24 AM

Lens C

Dericali · 10-10-2018, 04:37 AM

Originally posted by Kim Coxon

If the new Pentax 85 is designed along the same parameters as the new 50. It is likely to be very big, probably at least a 77mm filter thread and very expensive. I would guess at least £2000 and probably more.

My guess is that it will be priced closer to 1500euros... but potentially worth every penny if it's as sharp as the new 50mm.

Kim Coxon · 10-10-2018, 04:43 AM

Originally posted by Dericali

My guess is that it will be priced closer to 1500euros... but potentially worth every penny if it's as sharp as the new 50mm.

Maybe, but I doubt it going from passed "price comparisons". Much will depend on the number of groups elements in the design. I can't see it being only about 9% more than the 50mm.
But we can all dream on.

bdery · 10-10-2018, 05:23 AM - **1 Like**

Looking at both examples, I'd say my favourite is the 77! Lens A is my favourite in the three mystery lenses, lens B looks soft and lens C creates a purple tint. That could be due to processing or JPEG creation, however.

Since it's more different, I'd guess the Zeiss is the C, the M is the B and the A is the A... But I'll keep my 77

bdery · 10-10-2018, 05:23 AM

Looking at both examples, I'd say my favourite is the 77! Lens A is my favourite in the three mystery lenses, lens B looks soft and lens C creates a purple tint. That could be due to processing or JPEG creation, however.

Since it's more different, I'd guess the Zeiss is the C, the M is the B and the A is the A... But I'll keep my 77

torashi · 10-10-2018, 05:45 AM

Was there a slight breeze perhaps? I'm noticing some differences in focusing and perhaps a little motion blur. Some are focused on the anthers, some on the petals. Are you using live view? I know it's damn hard to nail focus it being so paper thin. Specially if there are aberrations.
I would guess B is the Zeiss, C is the A* and A is the SMC. The 77 and exhibit A burn colors in pretty much the same way. I hope we can get pleasantly surprised.

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10-09-2018, 10:24 PM - 1 Like	#16
pinholecam Pentaxian Join Date: Oct 2009 Location: North Photos: Gallery Posts: 4,710	Originally posted by kernos It would be really nice to see all three lenses on a portrait study with really good natural light, that's the intended use of this type of lens. It is really hard to like one over the other based on this particular scene. Ideally, yes, but usually there are difficulties. 1. Subject needs to stand still 2. Any change in expression, even slight difference in head position can add subjectivity (ie. like/dislike) to the photo 3. Needs a willing model Maybe a statue in a park would be the closest, but those are usually in a boring dark color. For my own lenses, I just can't be bothered with such comparisons and use them as the 'lens of the day' and will always conclude that I like them all

10-10-2018, 12:52 AM	#17
Kim Coxon Senior Member Join Date: Sep 2018 Posts: 135 Original Poster	Originally posted by torashi I think it's a nice test, and very interesting, but should be reshot with a controlled light source. Sunlight varies constantly in intensity, even if our eyes can't see it, specially with clouds and at sunset when the light has to cross a lot of atmosphere. Test "A" seems burnt and overexposed. No clouds and each exposure taken using manual settings using a Gossen Sixtomat meter in incident mode to take the readings.

10-10-2018, 02:42 AM	#18
Dericali Senior Member Join Date: Jul 2016 Location: Berlin Posts: 298	I would say lens B is my favorite. I think I'll wait for the new Pentax 85mm

10-10-2018, 03:09 AM	#19
Kim Coxon Senior Member Join Date: Sep 2018 Posts: 135 Original Poster	Originally posted by Dericali I would say lens B is my favorite. I think I'll wait for the new Pentax 85mm If the new Pentax 85 is designed along the same parameters as the new 50. It is likely to be very big, probably at least a 77mm filter thread and very expensive. I would guess at least £2000 and probably more.

10-10-2018, 03:58 AM	#20
wanderer2 Veteran Member Join Date: Jul 2016 Posts: 301	Just a thought - It also would be nice to compare the lenses stopped down.

10-10-2018, 04:19 AM	#21
Kim Coxon Senior Member Join Date: Sep 2018 Posts: 135 Original Poster	Originally posted by wanderer2 Just a thought - It also would be nice to compare the lenses stopped down. Only so many hours in the day. I mainly did this because several people asked how they compared when I posted about getting the A* lens.

10-10-2018, 04:37 AM	#26
Dericali Senior Member Join Date: Jul 2016 Location: Berlin Posts: 298	Originally posted by Kim Coxon If the new Pentax 85 is designed along the same parameters as the new 50. It is likely to be very big, probably at least a 77mm filter thread and very expensive. I would guess at least £2000 and probably more. My guess is that it will be priced closer to 1500euros... but potentially worth every penny if it's as sharp as the new 50mm.

10-10-2018, 04:43 AM	#27
Kim Coxon Senior Member Join Date: Sep 2018 Posts: 135 Original Poster	Originally posted by Dericali My guess is that it will be priced closer to 1500euros... but potentially worth every penny if it's as sharp as the new 50mm. Maybe, but I doubt it going from passed "price comparisons". Much will depend on the number of groups elements in the design. I can't see it being only about 9% more than the 50mm. But we can all dream on.

10-10-2018, 05:23 AM - 1 Like	#28
bdery Pentaxian Join Date: Mar 2008 Location: Quebec city, Canada Photos: Gallery Posts: 9,363	Looking at both examples, I'd say my favourite is the 77! Lens A is my favourite in the three mystery lenses, lens B looks soft and lens C creates a purple tint. That could be due to processing or JPEG creation, however. Since it's more different, I'd guess the Zeiss is the C, the M is the B and the A is the A... But I'll keep my 77

10-10-2018, 05:23 AM	#29
bdery Pentaxian Join Date: Mar 2008 Location: Quebec city, Canada Photos: Gallery Posts: 9,363	Looking at both examples, I'd say my favourite is the 77! Lens A is my favourite in the three mystery lenses, lens B looks soft and lens C creates a purple tint. That could be due to processing or JPEG creation, however. Since it's more different, I'd guess the Zeiss is the C, the M is the B and the A is the A... But I'll keep my 77

10-10-2018, 05:45 AM	#30
torashi Veteran Member Join Date: Sep 2017 Location: Medellín Posts: 1,322	Was there a slight breeze perhaps? I'm noticing some differences in focusing and perhaps a little motion blur. Some are focused on the anthers, some on the petals. Are you using live view? I know it's damn hard to nail focus it being so paper thin. Specially if there are aberrations. I would guess B is the Zeiss, C is the A* and A is the SMC. The 77 and exhibit A burn colors in pretty much the same way. I hope we can get pleasantly surprised.

85mm FF comparison

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