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johnkrumm · 07-29-2018, 08:59 AM - **2 Likes**

One to show a shot from several feet away at f1.4. There is a bit of distracting bright blurry driftwood in the background. It was not easy to focus perfectly on the dog's face. Live view worked best. Then a simple shot to show the star effect at f16.

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johnkrumm · 07-29-2018, 09:06 AM - **1 Like**

Here's the 100% crop of the first shot...

robiles · 07-29-2018, 09:39 AM

Different aperture, diferent uses.

i am sure this lens is up to all challenges. Congrats on a nice piece of equipment (a.k.a. toy)

ronthejazzguy · 07-29-2018, 09:43 AM

A great lens that if used with a bit of caution can produce great images. Nice shot and great dog!

pschlute · 07-29-2018, 10:04 AM

Lovely doggy, and I think this lens is going to be so popular.

BullsOnParade81 · 07-29-2018, 10:34 AM

Great shot

ZeljkoS · 07-29-2018, 11:11 AM

Great shots, that lens seems to be amazing

Kaladran · 07-29-2018, 12:37 PM

The 100% crop looks really nice, this does look like it will be a nice walkabout lens.

**hyyz** · 07-29-2018, 03:35 PM

Amazing lens!

SSGGeezer · 07-29-2018, 03:55 PM

Even though I shoot APSC, am I going to have to get another job so I can pay for my LBA?

**Digitalis** · 07-29-2018, 05:12 PM

nice torture test for the lens. There is a slight amount of fringing here, it can only be seen in the 100% crop - but I can think of lenses Pentax has made* that would have done far worse considering the extreme contrast..

*The SMCP-FA 77mm f/1.8 limited springs to mind, that dogs nose would have been fringed with purple.

donpjt · 07-29-2018, 09:54 PM

Great lens. Reminds me of an 85,, 1.4 lens

travelour · 07-29-2018, 10:33 PM

Originally posted by donpjt

Great lens. Reminds me of an 85,, 1.4 lens

Now, I have to search the forum for a comparison of the FA 85 the DFA 50. Trying to figure out which toy will burn the next hole in my wallet.

Dericali · 07-30-2018, 12:16 AM

Originally posted by johnkrumm

It was not easy to focus perfectly on the dog's face. Live view worked best.

That doesn't sound very good

johnkrumm · 07-30-2018, 08:03 AM

Originally posted by Dericali

That doesn't sound very good

Three issues were at play. Very low depth of field, a very dark face with bright white fur in other areas, and typical dog movement. In this case I had better luck focusing on her eye with live view. Sometimes contrast detect can be more precise.

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07-29-2018, 09:39 AM	#3
robiles Veteran Member Join Date: Jan 2014 Location: Deva Posts: 311	Different aperture, diferent uses. i am sure this lens is up to all challenges. Congrats on a nice piece of equipment (a.k.a. toy)

07-29-2018, 09:43 AM	#4
ronthejazzguy Junior Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 48	A great lens that if used with a bit of caution can produce great images. Nice shot and great dog!

07-29-2018, 10:04 AM	#5
pschlute Moderator Loyal Site Supporter Join Date: Mar 2007 Location: Surrey, UK Photos: Gallery Posts: 8,219	Lovely doggy, and I think this lens is going to be so popular.

07-29-2018, 10:34 AM	#6
BullsOnParade81 Senior Member Join Date: Jan 2016 Location: Tampa Florida Posts: 287	Great shot

07-29-2018, 11:11 AM	#7
ZeljkoS Veteran Member Join Date: Feb 2014 Photos: Gallery \| Albums Posts: 421	Great shots, that lens seems to be amazing

07-29-2018, 12:37 PM	#8
Kaladran Senior Member Join Date: Dec 2010 Photos: Gallery Posts: 196	The 100% crop looks really nice, this does look like it will be a nice walkabout lens.

07-29-2018, 03:35 PM	#9
hyyz Site Supporter Join Date: Jan 2008 Location: Michigan Posts: 478	Amazing lens!

07-29-2018, 03:55 PM	#10
SSGGeezer Veteran Member Join Date: Jun 2017 Location: Indiana, U.S. Photos: Gallery \| Albums Posts: 4,845	Even though I shoot APSC, am I going to have to get another job so I can pay for my LBA?

07-29-2018, 05:12 PM	#11
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,695	nice torture test for the lens. There is a slight amount of fringing here, it can only be seen in the 100% crop - but I can think of lenses Pentax has made* that would have done far worse considering the extreme contrast.. The SMCP-FA 77mm f/1.8 limited springs to mind, that dogs nose would have been fringed with purple.*

07-29-2018, 09:54 PM	#12
donpjt Senior Member Join Date: Apr 2014 Location: Houston, TX Photos: Gallery Posts: 190	Great lens. Reminds me of an 85,, 1.4 lens

07-29-2018, 10:33 PM	#13
travelour Junior Member Join Date: Jul 2014 Location: Tenryu Posts: 29	Originally posted by donpjt Great lens. Reminds me of an 85,, 1.4 lens Now, I have to search the forum for a comparison of the FA 85 the DFA 50. Trying to figure out which toy will burn the next hole in my wallet.

07-30-2018, 12:16 AM	#14
Dericali Senior Member Join Date: Jul 2016 Location: Berlin Posts: 298	Originally posted by johnkrumm It was not easy to focus perfectly on the dog's face. Live view worked best. That doesn't sound very good

07-30-2018, 08:03 AM	#15
johnkrumm Senior Member Join Date: May 2016 Location: Duluth, MN Posts: 141 Original Poster	Originally posted by Dericali That doesn't sound very good Three issues were at play. Very low depth of field, a very dark face with bright white fur in other areas, and typical dog movement. In this case I had better luck focusing on her eye with live view. Sometimes contrast detect can be more precise.

F16 vs. f1.4 DFA* 50

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