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Photo Acceptance - Pre-Screening (MHO)  
User currently offlineMHO From United States of America, joined Jun 2006, 209 posts, RR: 0
Posted (5 years 5 months 1 week 8 hours ago) and read 1808 times:

Hi all,

I'm going to keep trying till one of them gets accepted. Any comments on this flight of 4? Clockwise from the top, P51, F22, P40 and F16.

Taken with a SONY A350, 300 mm zoom, f5.4 1/1250 sec. Thanks.
michael

Big version: Width: 1240 Height: 827 File size: 466kb



It's better to be a little behind than a big ass
7 replies: All unread, jump to last
 
User currently offlineTransIsland From Bahamas, joined Mar 2004, 2046 posts, RR: 9
Reply 1, posted (5 years 5 months 1 week 8 hours ago) and read 1804 times:

pull it from the Q. they're blurry, and the top one looks blown out.


I'm an aviation expert. I have Sky Juice for breakfast.
User currently offlineKoryo From Vatican City, joined Feb 2009, 285 posts, RR: 0
Reply 2, posted (5 years 5 months 1 week 7 hours ago) and read 1797 times:

Also it is noisy and extremely out of focus I too suggest you pull it from the Q.


This forum is as good as you make it. Never post a message in anger. Take the high road and others will follow.
User currently offlineMho From United States of America, joined Jun 2006, 209 posts, RR: 0
Reply 3, posted (5 years 5 months 1 week 7 hours ago) and read 1787 times:

That bad, huh? Fortunately, it's not q'ed yet, so...

Any advice about autofocus on this type of scene? My camera gives me 3 choices, spot focus being one, and also there is continuous autofocus, vs. one-shot. I appreciate your input.



It's better to be a little behind than a big ass
User currently offlineKoryo From Vatican City, joined Feb 2009, 285 posts, RR: 0
Reply 4, posted (5 years 5 months 1 week 6 hours ago) and read 1784 times:

First off what type of camera are we talking about? If I had to choose right now I would choose continuous auto focus (guess), also what type of auto focus was this picture shot with?

Koryo



This forum is as good as you make it. Never post a message in anger. Take the high road and others will follow.
User currently offlineDlowwa From Canada, joined Apr 2005, 7328 posts, RR: 30
Reply 5, posted (5 years 5 months 1 week 6 hours ago) and read 1782 times:



Quoting Mho (Reply 3):
Any advice about autofocus on this type of scene?

I doubt the focus is the culprit. At that distance, it should be set at infinity or so.

I think it'd be pretty safe to say that the blurriness is caused by A) using a lower-quality zoom lens B) at the long end C) nearly wide open (f/5.4).

That's a recipe for a soft image.


User currently offlineMHO From United States of America, joined Jun 2006, 209 posts, RR: 0
Reply 6, posted (5 years 5 months 1 week ago) and read 1757 times:

The camera was SONY A350, 300 mm zoom, f5.4 1/1250 sec.

lens is a Sigma 70-300 f4.0-5.6 DG Macro.

It has 3 AF modes: single shot, automatic, and continuous, and 3 AF areas: spot, local and wide.

and I was using continuous autofocus with spot area at the time.

Realizing that it is not a top-notch lens, it cost about $230, how low-quality is this, in your opinion? I plan to experiemnt at higher f-stops, and maybe not zoom out all the way, and see what gives.



It's better to be a little behind than a big ass
User currently offlineDlowwa From Canada, joined Apr 2005, 7328 posts, RR: 30
Reply 7, posted (5 years 5 months 6 days 23 hours ago) and read 1753 times:

Like I said, the AF mode probably had little to do with the softness of the picture.

The Sigma is a decent enough lens, but at 200mm and above, it is quite soft, especially at lower f-stops. f/5.4 @ 300mm is actually wide open for that lens, and wide open is traditionally where zooms are softest (excluding the other extreme end from f/16+).

You should be able to get good results from it from 70-200mm under good conditions (good lighting, stopped down to f/8 or so), but I wouldn't expect too much from it in the way of sharpness at the long end of the zoom, especially wide open.

If you want to get good results at 200mm and above, you're probably going to need to invest in better glass, as I don't think that even stopping it down will get you much better results @ 300mm.

In short, if you stay in the 70-200mm f/8 range, you should be able to get shots that with a little editing could be accepted here.

If you want any more advice on lenses or shooting techniques, let us know, or you can send me a PM.

Dana


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