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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 09 Aug 2010 (Monday) 15:35
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15-85 sharpness compared with 100-400

 
Combatmedic870
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Aug 10, 2010 11:30 |  #16

The 100-400 is old and needs to be updated. Its still a good lens right now. But it could be much better. If anyone disagrees...shove it up your ***. The lens is freaking old and it could be MUCH better. Why wouldnt you expect a brand new lens to out resolve a 10 year old L lens?


Nikon D700: 16-35 F4, 50 1.4G, 85 1.8,105 VR Micro, 135F2 DC, 80-200 2.8 AFS
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,Ryan
Sometimes, I think Photography is worse than Crack.:oops:

  
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ingraman
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Aug 10, 2010 12:33 as a reply to  @ Combatmedic870's post |  #17

You can't really compare the 100-400mm to a standard zoom, mainly because compromises are needed to make a lens of its size and range. I've owned one before, and it was roughly as good as my 55-250mm, which I think is pretty impressive.




  
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Snydremark
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Aug 10, 2010 13:32 as a reply to  @ ingraman's post |  #18

I know that 'my' copy of the 100-400 severely dislikes filters; I'll get relatIvely soft results from it even with a high end UV filter.

The other thing is that the IS system in it is old, and to really get sharp results handheld you still should try and keep the shutter up around 1/focal length. At 400mm, I get the best results at 1/640 or higher. That isn't to say that great results can't come at slower speeds, but it is harder to get them.

If you're concerned about sharpness, take some shots using a tripod, a remote shutter cable/timer and mirror lockup. This will remove jitter from you and from mirror slap.

Your example, though, looks like you just had a shutter slightly too slow or that you 'stabbed' the shutter button instead of a smooth press.


- Eric S.: My Birds/Wildlife (external link) (7D MkII/5D IV, Canon 10-22 f/3.5-4.5, Canon 24-105L f/4 IS, Canon 70-200L f/2.8 IS MkII, Canon 100-400L f/4.5-5.6 IS I/II)
"The easiest way to improve your photos is to adjust the loose nut between the shutter release and the ground."

  
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ap-photo27
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Aug 14, 2010 04:58 as a reply to  @ Snydremark's post |  #19

Thanks for all your replies. It was in fact the cheap Hoya filter casing the lack of sharpness.

Here are two shots one with and one without the filter.

http://www.flickr.com/​photos/51578516@N06/ (external link)

These shots were taken on a tripod at 100 asa with mirror lockup and self timer. The difference is very noticeable.

No I need to decide if I want to invest in a better quality filter (Hoya Pro series????) or not bother with a filter and use the lens hood to protect the front element. Anyone have experience with the Pro filters?

Andrew


Canon EOS 7D | Canon 15-85mm f3.5-5.6 IS USM | Canon 100-400mm f4.5-5.6 L IS USM | Tamron 11-18mm f4.5-5.6 Di II LD

  
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bigpow
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Aug 14, 2010 05:17 |  #20

I've 2 Pro1 and 1 HD, I recommend Hoya HD over Pro1 if cost is not a factor
For 15-85, I use Pro1, good 'nuf


[5DM2: 50L, 100L, 24-105L, 70-200/2.8IS L II, Zeiss 2/35 ZE]
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John_T
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Aug 14, 2010 05:30 |  #21

ap-photo27 wrote in post #10719237 (external link)
No I need to decide if I want to invest in a better quality filter (Hoya Pro series????) or not bother with a filter and use the lens hood to protect the front element. Anyone have experience with the Pro filters?

Andrew

I wouldn't replace it, just going to trip you up again, only maybe less frequently. Under normal use, the lens cap and hood are more than enough protection, and the hood also does help your images, subtly and very directly. This whole "protective filter" fixation is just extra change for the dealers.

If you are shooting under some severe environmental circumstances, you might use a filter for that instance, but then take it off when you are finished.


Canon : EOS R : 5DIV : 5DS R : 5DIII : 7DII : 40 2.8 : 50 1.4 : 35L : 85L : 100L IS Macro : 135L : 16-35L II : RF-24-105L IS : 70-200L II : 100-400L IS II : 1.4x & 2x TC III : 600EX-RT : 580EX : 430EX : G1XII : Markins Q10 & Q3T : Jobu Gimbal : Manfrotto Underware : etc...

  
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argyle
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Aug 14, 2010 07:00 as a reply to  @ post 10694267 |  #22

Comparing these two lenses is an apples and oranges thing. First, I'd say to make sure that you're employing a good long lens technique (plenty of info out there if you google it). Second, are you waiting for the IS to kick in on the 100-400? Third, the 100-400 is a light hog...really needs good light to shine. Fourth, as someone else has already mentioned, what minimum shutter speed are you shooting at? Pairing this lens with a crop body really changes things. Last, remove the filter and use the hood...the 100-400 is kind of quirky with filters (and it doesn't necessarily have to be a crap filter)...check this older link on FM for visible proof:

100-400L + Hoya UV Filter (external link)


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Snydremark
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Aug 14, 2010 23:32 |  #23

ap-photo27 wrote in post #10719237 (external link)
Thanks for all your replies. It was in fact the cheap Hoya filter casing the lack of sharpness.

Here are two shots one with and one without the filter.

http://www.flickr.com/​photos/51578516@N06/ (external link)

These shots were taken on a tripod at 100 asa with mirror lockup and self timer. The difference is very noticeable.

No I need to decide if I want to invest in a better quality filter (Hoya Pro series????) or not bother with a filter and use the lens hood to protect the front element. Anyone have experience with the Pro filters?

Andrew

Just use the lens hood and cap; I stopped with the filters as they're just really money sinks for digital cameras and/or lenses that offer hoods.


- Eric S.: My Birds/Wildlife (external link) (7D MkII/5D IV, Canon 10-22 f/3.5-4.5, Canon 24-105L f/4 IS, Canon 70-200L f/2.8 IS MkII, Canon 100-400L f/4.5-5.6 IS I/II)
"The easiest way to improve your photos is to adjust the loose nut between the shutter release and the ground."

  
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15-85 sharpness compared with 100-400
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