[noelpolar]

Not me....no need for 2.....

[redpit]

Those who own the DFA 150-450 how do you use it for panning? SR on or off? I've found that with the Bigma 50-500 I had the best results with lens OS set to 2 (after all this setting was designed for panning-reducing the vertical movement) but with the DFA I usually leave the SR off and that delivers very few acceptable shots. I've seen though (aviation photography) that with SR on there is no real gain but also there is a tendency for blurry photos. Maybe a newer body (I use it on K-5IIs) will give much better results. I wonder how the K-3II compares to K-3 and previous cameras...

[Franc]

i leave SR on when using the K3. If i get blurry photo's i know its user error and not due to SR.
i also disagree with the flare bit. I've found it nearly impossible to get it to flare. But i just center point / center weighted.
use it open at the far end my opinion is that the lens is sharp and get my the photo's that i want.

[Mike.P®]

I started turning off SR for aviation shots (K-5IIs) if using shutter speeds above 1/500s as I found I was getting quite a few blurry shots in a sequence when following a jet (for example) whereas with the 50-500mm OS I could leave it on all the time. I still use it for prop planes though as you need extremely slow speeds to get decent propeller blur so I'm usually happy enough to get one or two decent shots.

I'm confident enough in my ability with the camera and long lenses to know that the problem is not down to user error when shooting at reasonably fast shutter speeds ... slow shutter speeds are however another thing all together .

[reh321]

I started turning off SR for aviation shots (K-5IIs) if using shutter speeds above 1/500s as I found I was getting quite a few blurry shots in a sequence when following a jet (for example) whereas with the 50-500mm OS I could leave it on all the time. I still use it for prop planes though as you need extremely slow speeds to get decent propeller blur so I'm usually happy enough to get one or two decent shots.

I'm confident enough in my ability with the camera and long lenses to know that the problem is not down to user error when shooting at reasonably fast shutter speeds ... slow shutter speeds are however another thing all together .

What shutter speed works well for propeller speeds?

[frogfoot]

What shutter speed works well for propeller speeds?

Around 1/160

[redpit]

What shutter speed works well for propeller speeds?

I rarely fall under 1/320 for flying props. I use 1/160 for props on the ground as it gives a full circle blur. For fast single engined props like the T-6II demo I use at least 1/500 shutter speeds and sometimes up to 1/1000 is needed to stop the action and still have a proper blur that looks beautiful.

I totally agree with Mike.P findings concerning the use of the SR.

[wissink]

Has anyone compared teh 150-450 to the Sigma 100-300 F4? Specifically sharpnes, IQ etc. Obviously the focal length is different. Thanks

[Mike.P®]

Has anyone compared teh 150-450 to the Sigma 100-300 F4? Specifically sharpnes, IQ etc. Obviously the focal length is different. Thanks

I have both, the Sigma only gets used now when I need a zoom but don't want to carry the weight. The 100-300mm f4 is in my all time top 5 lenses (and believe me I have had a few) but the 150-450mm is just a little bit better (plus the extra focal length is pretty handy)

[wissink]

I have both, the Sigma only gets used now when I need a zoom but don't want to carry the weight. The 100-300mm f4 is in my all time top 5 lenses (and believe me I have had a few) but the 150-450mm is just a little bit better (plus the extra focal length is pretty handy)

Thanks Mike. Just a little bit? I've been considering what to sell as I need the cash at the moment. I thought I'd sell the Sigma as it'd sell the quickest and then save up for the dfa when I could since the Sigma is not readily available. It'd be quite some time before I could afford the dfa. In your opinion (or anyone elses) is the much higher price tag of the dfa worth the diminishing return when considering that its "a little bit better?"

[Vylen]

Optically it might be "a little bit better" but considering the construction and all-weather capability... it's one of the many reasons I'm pining for this lens hehe.

[reh321]

Around 1/160

I rarely fall under 1/320 for flying props. I use 1/160 for props on the ground as it gives a full circle blur. For fast single engined props like the T-6II demo I use at least 1/500 shutter speeds and sometimes up to 1/1000 is needed to stop the action and still have a proper blur that looks beautiful.

Thank you, to both of you. Sometimes I see a picture of a flying craft with completely stopped propeller(s), and I always wonder whether it is about to crash. I do understand that this is just an artifact of a high shutter speed, but it does always look a tad odd to me, and I wanted numbers to carry around in my head so I could get it right the first time (since there may not be a second chance) if I ever happen to have an opportunity to take a picture like that.

[Mike.P®]

Thanks Mike. Just a little bit? I've been considering what to sell as I need the cash at the moment. I thought I'd sell the Sigma as it'd sell the quickest and then save up for the dfa when I could since the Sigma is not readily available. It'd be quite some time before I could afford the dfa. In your opinion (or anyone elses) is the much higher price tag of the dfa worth the diminishing return when considering that its "a little bit better?"

Its worth the difference to me as I could afford the lens but if it was going to be a problem financially then I wouldn't be in a hurry to make the change unless you really need the extra length.







i

[Canada_Rockies]

I would really like to be able to afford the 150-450. It seems to me that it is showing as a superb lens, in keeping with Pentax's history of great lenses. I could finally retire my M 400/5.6.

[Terzof]

Just got it on hand a few days ago, a monster in weight with handheld shooting :|