Re: Lunchtime Visitor
It’s just bokeh, IMO. The background is very busy with small spruce needles intertwined with cedar needles and dead branches, all of which were brighter lit than the cardinal. There’s not a lot of sharpening here, but it’s a considerable crop, so noise and other problems are magnified. This shot would have been a mess with my A 400/5.6. Thus far, the 150-450 seems to generate good bokeh, but with any lens, the look is largely a product of what is back there. In this example, it rendered the out of focus elements in a much nicer fashion: http://photo.net/photodb/photo?photo_id=18146695&size=lg > On Jan 6, 2016, at 7:10 PM, Igor PDML-StR wrote: > > > Paul, > > It is a nice picture, but I am curious about a certain aspect of it that > might be a characteristic of the lens: > The background (especially the green from the tree right in the middle of the > photo) seems to have some type of high-frequency "jitter". > I wonder what's the origin of that? > I could see a few different possible sources: > 1. strange bokeh in combination with the small features of the tree > 2. camera shake (motion blur) that is compensated for the in-focus items, but > not quite for the background. > 3. sharpening combined with one of the above > 4. ... (?) > > What do you think? > > Igor > > > > On Wed, Jan 6, 2016 at 2:10 PM, Paul Stenquist wrote: > >> Took a break and sat outside at noon today. This guy was too distant - the >> pic is only about 30% of frame - so it.s nothing special. But it's a nice >> example of lens performance. K-3 DFA 150-450, f5.6, 1/1250th, ISO 1250, >> handheld, 450mm. I like the way this combination locks in focus, but at this >> distance, about 70 feet I'd guess, finding the critter in the tree is a >> chore. But once I get a single point on him, it.ll lock right in. >> >> http://photo.net/photodb/photo?photo_id=18154948&size=lg >> > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Lunchtime Visitor
Paul, It is a nice picture, but I am curious about a certain aspect of it that might be a characteristic of the lens: The background (especially the green from the tree right in the middle of the photo) seems to have some type of high-frequency "jitter". I wonder what's the origin of that? I could see a few different possible sources: 1. strange bokeh in combination with the small features of the tree 2. camera shake (motion blur) that is compensated for the in-focus items, but not quite for the background. 3. sharpening combined with one of the above 4. ... (?) What do you think? Igor On Wed, Jan 6, 2016 at 2:10 PM, Paul Stenquist wrote: Took a break and sat outside at noon today. This guy was too distant - the pic is only about 30% of frame - so it.s nothing special. But it's a nice example of lens performance. K-3 DFA 150-450, f5.6, 1/1250th, ISO 1250, handheld, 450mm. I like the way this combination locks in focus, but at this distance, about 70 feet I'd guess, finding the critter in the tree is a chore. But once I get a single point on him, it.ll lock right in. http://photo.net/photodb/photo?photo_id=18154948&size=lg -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Lunchtime Visitor
Better apparent resolution! Encouraging! Thanks for posting, Paul! J - Original Message - From: "Paul Stenquist" To: "Pentax-Discuss Mail List" Sent: Wednesday, January 6, 2016 11:10:11 AM Subject: Lunchtime Visitor Took a break and sat outside at noon today. This guy was too distant — the pic is only about 30% of frame — so it’s nothing special. But it’s a nice example of lens performance. K-3 DFA 150-450, f5.6, 1/1250th, ISO 1250, handheld, 450mm. I like the way this combination locks in focus, but at this distance, about 70 feet I’d guess, finding the critter in the tree is a chore. But once I get a single point on him, it’ll lock right in. http://photo.net/photodb/photo?photo_id=18154948&size=lg -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Lunchtime Visitor
very nice indeed Dave On Wed, Jan 6, 2016 at 2:10 PM, Paul Stenquist wrote: > Took a break and sat outside at noon today. This guy was too distant — the > pic is only about 30% of frame — so it’s nothing special. But it’s a nice > example of lens performance. K-3 DFA 150-450, f5.6, 1/1250th, ISO 1250, > handheld, 450mm. I like the way this combination locks in focus, but at this > distance, about 70 feet I’d guess, finding the critter in the tree is a > chore. But once I get a single point on him, it’ll lock right in. > > http://photo.net/photodb/photo?photo_id=18154948&size=lg > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Lunchtime Visitor
Took a break and sat outside at noon today. This guy was too distant — the pic is only about 30% of frame — so it’s nothing special. But it’s a nice example of lens performance. K-3 DFA 150-450, f5.6, 1/1250th, ISO 1250, handheld, 450mm. I like the way this combination locks in focus, but at this distance, about 70 feet I’d guess, finding the critter in the tree is a chore. But once I get a single point on him, it’ll lock right in. http://photo.net/photodb/photo?photo_id=18154948&size=lg -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.