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Olympus 100-400 at 100%?

  
 
FrankA373
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p.1 #1 · p.1 #1 · Olympus 100-400 at 100%?


Would your expect a photo blown up 100% at 400 mm and f/1000 to be tack sharp on a tripod? Static subject in decent light. Thanks for your help.


May 13, 2022 at 05:21 PM
AlanD
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p.1 #2 · p.1 #2 · Olympus 100-400 at 100%?


Probably not since f/6.3 should have diffraction affecting the actual resolution. The airy disc is more than 8 microns.

Also have to deal w/atmospheric distortion if you are shooting on a hot day



May 13, 2022 at 06:28 PM
FrankA373
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p.1 #3 · p.1 #3 · Olympus 100-400 at 100%?


Should camera and lens IS be on though there is no Sync I? When I use the lens I leave it off on the lens.


May 13, 2022 at 08:18 PM
glassartist
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p.1 #4 · p.1 #4 · Olympus 100-400 at 100%?


FrankA373 wrote:
Should camera and lens IS be on though there is no Sync I? When I use the lens I leave it off on the lens.


On a tripod you shouldn't need any IS (either camera or lens or synch) particularly at 1/1000.

Atmospheric (heat) distortion isn't necessarily restricted to hot days and haze can be a problem at anytime as well - both can rob acuity.



May 14, 2022 at 09:51 AM
ElvisD
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p.1 #5 · p.1 #5 · Olympus 100-400 at 100%?


When using the lens handheld, I leave the lens IS off. Since they don't sync, there is no point in using both. I believe the IBIS is better than the ILIS.

When using a tripod, both are off.

For stationary subjects, I've been very pleased with the results. In good light, I've also found the results with the 1.4 TC very good.

I have not gotten consistently sharp results at full zoom with BiF. I'm relatively new to long lenses, so my results probably say as much about my learning curve as the lens itself.



May 14, 2022 at 10:40 AM
glassartist
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p.1 #6 · p.1 #6 · Olympus 100-400 at 100%?


ElvisD wrote:
When using the lens handheld, I leave the lens IS off. Since they don't sync, there is no point in using both. I believe the IBIS is better than the ILIS.

When using a tripod, both are off.


I thought generally ILIS was more effective at longer focal lengths than IBIS. It may be system dependent, not sure.




May 14, 2022 at 11:45 AM
 


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helimat
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p.1 #7 · p.1 #7 · Olympus 100-400 at 100%?


glassartist wrote:
I thought generally ILIS was more effective at longer focal lengths than IBIS. It may be system dependent, not sure.



I tend to agree. Although that being said, I am new to OM, and it's IBIS seems to outclass anything I've used prior... But I'd still lean towards lens IS for telephoto lenses. (When sync is not available)



May 14, 2022 at 08:04 PM
molson
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p.1 #8 · p.1 #8 · Olympus 100-400 at 100%?


FrankA373 wrote:
Would your expect a photo blown up 100% at 400 mm and f/1000 to be tack sharp on a tripod? Static subject in decent light. Thanks for your help.


At f/1000, I don't think any light would get through to the sensor, but at wider apertures, the lens seems plenty sharp to me. I don't think I've ever used it on a tripod, though... so YMMV.




  E-M1X    OLYMPUS M.100-400mm F5.0-6.3 lens    400mm    f/6.3    1/250s    1600 ISO    0.0 EV  






  E-M1X    OLYMPUS M.100-400mm F5.0-6.3 lens    400mm    f/6.3    1/250s    1600 ISO    0.0 EV  




May 15, 2022 at 12:01 PM
Robin Smith
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p.1 #9 · p.1 #9 · Olympus 100-400 at 100%?


Something can be "tack sharp" (a cliche), without having superb resolution. In my experience most Olympus lenses are capable of being "tack sharp".


May 16, 2022 at 10:07 AM
FrankA373
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p.1 #10 · p.1 #10 · Olympus 100-400 at 100%?


Robin Smith wrote:
Something can be "tack sharp" (a cliche), without having superb resolution. In my experience most Olympus lenses are capable of being "tack sharp".


Can you help me understand this statement? It seems confusing to me.



May 25, 2022 at 07:45 PM
Robin Smith
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p.1 #11 · p.1 #11 · Olympus 100-400 at 100%?


Sharpness is composed of 2 things: resolution and contrast. Assuming the edges are sharp and contrasty the image will appear sharp. But the fine detail may be lacking, but unless you have another image that shows the fine detail the other shot lacks, you may not notice it. Likewise a high resolution image can show a lot of detail but if low contrast it will lack apparent sharpness (punch, "tack sharp"). Another thing to think about is: is a 100MP image sharper than a 20MP image?


May 26, 2022 at 10:10 AM
gary0319
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p.1 #12 · p.1 #12 · Olympus 100-400 at 100%?


helimat wrote:
I tend to agree. Although that being said, I am new to OM, and it's IBIS seems to outclass anything I've used prior... But I'd still lean towards lens IS for telephoto lenses. (When sync is not available)


Back in the day..... this was true. But IBIS has advanced to the point where I rely entirely on the IBIS in either my OM-1 or E-M5 III. Over the years using my PL100-400 at 400mm with the E-M1 the lens IS was better, with the E-M1 II it was equal, IBIS or lens, with the E-M1 III, E-M5 III and now the OM-1 the IBIS pulled ahead. Best of all is the sync IS between my 12-100 and any of my Olympus bodies.



May 26, 2022 at 03:50 PM







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