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FORUMS Other Digital Cameras Olympus Digital Cameras
Thread started 06 Dec 2014 (Saturday) 11:40
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MedicineMan4040
The Magic Johnson of Cameras
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Joined Jul 2013
Feb 08, 2018 05:50 |  #541

Kev those are just fascinating creatures and you're imaging them in the day light, how cool is that.


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Vid Collection: https://www.youtube.co​m/user/medicineman4040 (external link)

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bidkev
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Joined Jul 2013
From Blackpool UK to Brisbane Australia 20 yrs ago
Feb 08, 2018 08:17 |  #542

MedicineMan4040 wrote in post #18559166 (external link)
Kev those are just fascinating creatures and you're imaging them in the day light, how cool is that.


They normally have their wings wrapped around their head, sleeping. But the sun had just burst through after a heavy shower so whether that woke them, I don't know? I often get there early when they are coming in to roost, but I wanted to test the lens reachwise but it's lacking.............if I sell any more analog gear on ebay I may go for the 75-300. Anyways, this was around 10 am so I got lucky


See my fishy photography here: https://kevindickinson​fineartphot.smugmug.co​m/Tropical-Fish-2/ (external link)
Canon 7D mk2 |100-400L mk2 | Olympus OM-D E-M10 | Olympus OM-D E-M10mkll | Canon 1.4 Ex Mklll | Canon 580EXll| Olympus Zuicko 14-42 | 40-150 | 75-300 |17mm 1.8 | 60mm 2.8 macro | Lots of analog gear

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Pagman
I just hold the thing :-)
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Joined Dec 2011
Feb 08, 2018 11:14 |  #543

bidkev wrote in post #18559225 (external link)
They normally have their wings wrapped around their head, sleeping. But the sun had just burst through after a heavy shower so whether that woke them, I don't know? I often get there early when they are coming in to roost, but I wanted to test the lens reachwise but it's lacking.............if I sell any more analog gear on ebay I may go for the 75-300. Anyways, this was around 10 am so I got lucky


I have the 75-300 mk 2 although I havn't had it long, what I will say is its very good, and to be honest I think its better than similar 70-300 lenses (Nikon. Canon, Sigma, etc) Ok its not a Pro pro lens but its also not over 1000 to but I got mine nearly new mint condition for 265.

P.


Olympus E-M1 and some Zuiko glass

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Pagman
I just hold the thing :-)
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Joined Dec 2011
Feb 08, 2018 14:00 |  #544

Rubbish weather here so no chance to try my cam out outdoors apart from this one in our garden.

P.

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Olympus E-M1 and some Zuiko glass

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Scottboarding
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Feb 08, 2018 14:38 |  #545

bidkev wrote in post #18559120 (external link)
I think I might have spoken to soon despite the earlier pics??

The two best shots from my outdoor session today which was a failure. I'm waiting for a lens hood to arrive so here's hoping that's my problem. They just look "unresolved" poor resolution to me. Whether that's because I'm used to the IQ from full frame and apsc I don't know?? The lens obviously shines in close ups but I shot heaps of landscapes to day but binned the lot :-(

Any ideas?

QUOTED IMAGE
[IMAGE'S LINK: https://flic.kr/p/22Nh​5h2] (external link)Olympus 17mm 1.8 test shots (1) (external link) by Kevin Dickinson (external link), on Flickr

QUOTED IMAGE
[IMAGE'S LINK: https://flic.kr/p/G2L2​1S] (external link)Olympus 17mm 1.8 test shots (2) (external link) by Kevin Dickinson (external link), on Flickr

If I had to guess, it's because you're shooting at f8. The m43 sensor is much smaller, and much more prone to diffraction. I never go past f5.6, and most of the time I stay at f4. The DoF is doubled, so shooting at f4 will give you the depth of field of f8 on a full frame. I find the sweet spot for M43 is f2.8 to f4 for deep depth of field. Certain lenses look fine at f5.6, but at f8 you're definitely going to get a heavy dose of diffraction.


Gear: http://photography-on-the.net ...showthread.php?p=18​556308
Flickr: https://www.flickr.com​/photos/130385961@N05/ (external link)

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Pagman
I just hold the thing :-)
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Joined Dec 2011
Feb 08, 2018 14:48 |  #546

Scottboarding wrote in post #18559473 (external link)
If I had to guess, it's because you're shooting at f8. The m43 sensor is much smaller, and much more prone to diffraction. I never go past f5.6, and most of the time I stay at f4. The DoF is doubled, so shooting at f4 will give you the depth of field of f8 on a full frame. I find the sweet spot for M43 is f2.8 to f4 for deep depth of field. Certain lenses look fine at f5.6, but at f8 you're definitely going to get a heavy dose of diffraction.


But a fair amount of lenses have thier sweet spot at f8 esp if thier native largest ap is around f5.6 -f6 etc.

P.


Olympus E-M1 and some Zuiko glass

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Pagman
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Feb 08, 2018 16:03 |  #547

Took another cell phone shot of my new gear.

P.

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bidkev
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From Blackpool UK to Brisbane Australia 20 yrs ago
Feb 08, 2018 16:50 |  #548

Scottboarding wrote in post #18559473 (external link)
If I had to guess, it's because you're shooting at f8. The m43 sensor is much smaller, and much more prone to diffraction. I never go past f5.6, and most of the time I stay at f4. The DoF is doubled, so shooting at f4 will give you the depth of field of f8 on a full frame. I find the sweet spot for M43 is f2.8 to f4 for deep depth of field. Certain lenses look fine at f5.6, but at f8 you're definitely going to get a heavy dose of diffraction.


Thanks for that as it confirms the only guess that I could come up with. I looked at my old M4/3 shots (I sold the gear but am now getting back into it) which obviously would be keepers, and they were all at lower apertures. Even the 14-150 shots wide open and full stretch, looked much sharper than the shots i took with the 17mm yesterday. I guess I wasn't thinking and applying the same thinking that I use with full frame. Everything I read said that there was little benefit, except at the edges in stopping this lens down and yet Duh!! I went and did it!:oops::oops:


See my fishy photography here: https://kevindickinson​fineartphot.smugmug.co​m/Tropical-Fish-2/ (external link)
Canon 7D mk2 |100-400L mk2 | Olympus OM-D E-M10 | Olympus OM-D E-M10mkll | Canon 1.4 Ex Mklll | Canon 580EXll| Olympus Zuicko 14-42 | 40-150 | 75-300 |17mm 1.8 | 60mm 2.8 macro | Lots of analog gear

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bidkev
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Joined Jul 2013
From Blackpool UK to Brisbane Australia 20 yrs ago
Feb 08, 2018 16:51 |  #549

Pagman wrote in post #18559479 (external link)
But a fair amount of lenses have thier sweet spot at f8 esp if thier native largest ap is around f5.6 -f6 etc.

P.

Yes, but 2.5 to 3 stops down is invariably the sweet spot on most lenses so with a 1.8...........what the hell am i doing at f8!!


See my fishy photography here: https://kevindickinson​fineartphot.smugmug.co​m/Tropical-Fish-2/ (external link)
Canon 7D mk2 |100-400L mk2 | Olympus OM-D E-M10 | Olympus OM-D E-M10mkll | Canon 1.4 Ex Mklll | Canon 580EXll| Olympus Zuicko 14-42 | 40-150 | 75-300 |17mm 1.8 | 60mm 2.8 macro | Lots of analog gear

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Pagman
I just hold the thing :-)
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Joined Dec 2011
Feb 08, 2018 16:54 |  #550

bidkev wrote in post #18559552 (external link)
Yes, but 2.5 to 3 stops down is invariably the sweet spot on most lenses so with a 1.8...........what the hell am i doing at f8!!


Guess f7.1 is about right on the 75-300 though its max at 300 is only f6.7.

P.


Olympus E-M1 and some Zuiko glass

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bidkev
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From Blackpool UK to Brisbane Australia 20 yrs ago
Feb 08, 2018 17:00 |  #551

Pagman wrote in post #18559555 (external link)
Guess f7.1 is about right on the 75-300 though its max at 300 is only f6.7.

P.

Isn't that it's minimum?


See my fishy photography here: https://kevindickinson​fineartphot.smugmug.co​m/Tropical-Fish-2/ (external link)
Canon 7D mk2 |100-400L mk2 | Olympus OM-D E-M10 | Olympus OM-D E-M10mkll | Canon 1.4 Ex Mklll | Canon 580EXll| Olympus Zuicko 14-42 | 40-150 | 75-300 |17mm 1.8 | 60mm 2.8 macro | Lots of analog gear

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Pagman
I just hold the thing :-)
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Joined Dec 2011
Feb 08, 2018 17:03 |  #552

bidkev wrote in post #18559559 (external link)
Isn't that it's minimum?


Its a f4.8 - 6.7.

P.


Olympus E-M1 and some Zuiko glass

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bidkev
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From Blackpool UK to Brisbane Australia 20 yrs ago
Post has been edited 15 days ago by bidkev.
Feb 08, 2018 17:41 |  #553

Pagman wrote in post #18559560 (external link)
Its a f4.8 - 6.7.

P.

Yes, but you can still close down another stop at the long end which will likely be it's sweet spot. Most zooms I've used always seem to perform better one to two stops down at the long end. Best way to check is to shoot the same subject at various stops and see which is the sweeter. different lengths along the zoom range can sometimes be different.

f8 seems to be the sweet spot here taken into consideration depth of field of course. Just shot this half an hour ago

IMAGE: https://farm5.staticflickr.com/4613/40158564251_eab4899a1b_b.jpg
[IMAGE'S LINK: https://flic.kr/p/24bF​93P] (external link)Olympus 40 -150 Test (external link) by Kevin Dickinson (external link), on Flickr

See my fishy photography here: https://kevindickinson​fineartphot.smugmug.co​m/Tropical-Fish-2/ (external link)
Canon 7D mk2 |100-400L mk2 | Olympus OM-D E-M10 | Olympus OM-D E-M10mkll | Canon 1.4 Ex Mklll | Canon 580EXll| Olympus Zuicko 14-42 | 40-150 | 75-300 |17mm 1.8 | 60mm 2.8 macro | Lots of analog gear

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Pagman
I just hold the thing :-)
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Joined Dec 2011
Feb 08, 2018 17:45 as a reply to bidkev's post |  #554

I cant wait to see how it tackles BIF and planes in flight, I know it has the latest updates its at 4.3, so its had the AF improvements Oly was pushing out, also I understand the 75-300 mk 2 is no slouch in the focusing department.

It will be interesting.

P.


Olympus E-M1 and some Zuiko glass

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Scottboarding
Senior Member
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Joined May 2016
Feb 08, 2018 18:01 |  #555

bidkev wrote in post #18559552 (external link)
Yes, but 2.5 to 3 stops down is invariably the sweet spot on most lenses so with a 1.8...........what the hell am i doing at f8!!

I've always found f4 to be the best on my 25mm and 17mm. On my Mitakon 25mm f0.95, the sweet spot is f2, but that's still too shallow (for me) to use in everyday photography.


Gear: http://photography-on-the.net ...showthread.php?p=18​556308
Flickr: https://www.flickr.com​/photos/130385961@N05/ (external link)

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