flyfisher1976
Posts: 777
Joined: Tue Jan 04, 2005 1:08 pm

Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 6:51 pm

I am contimplating selling my recently purchased Canon 75-300 IS lens and buying a 100-400L IS lens. However, I am now reconsidering...

After reading the specs on the 100-400 I realized that the max apeture value is the same as the 75-300! (4.5/5.6).

So should I still consider this upgrade, or just stick with what I have?

I really need someone to "sell" me on this one, because I am starting to doubt the sanity of my plan....

Thanks, JD
 
sulman
Posts: 1963
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RE: Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 6:59 pm

Depends what you want to use it for. If it's aviation photography, the aperture shouldn't really be dropping below F7.1-F8.0 if you're at the long end of either lens, because you loose a little sharpness.

You'll get some great quality pictures with the 100-400, but it's alot of money - ask yourself if you really need it.


James
It takes a big man to admit they are wrong, and I am not a big man.
 
flyfisher1976
Posts: 777
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RE: Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 7:02 pm

Quoting Sulman (Reply 1):
If it's aviation photography

It's safe to say that since I'm in the aviation photography forum, that this is what I will be using it for...

I more concerned about the speed of the lens. I usually shoot around f8 or f9. So if the 100-400 doesn't really offer me any advantage in this area over the lens that I currently own...why should I buy it?
 
sulman
Posts: 1963
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RE: Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 7:18 pm

The optics and build quality are better.
It takes a big man to admit they are wrong, and I am not a big man.
 
INNflight
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RE: Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 7:21 pm

You will not ever go back to normal glass if you had a L lens before.
I'd go for it, if I would need a second 100-400L...  Smile
Jet Visuals
 
flyfisher1976
Posts: 777
Joined: Tue Jan 04, 2005 1:08 pm

RE: Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 7:23 pm

Is the autofocus any faster on the 100-400 than the 75-300?
 
sulman
Posts: 1963
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RE: Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 7:26 pm

AF is much quicker, and silent. IS is a little more complex than the 75-300, and is on both horizontal and vertical plane; I think the 75-300 only uses vertical.

If you're not sure, see if you can rent one - it will give you a good idea whether you like it or not.


James
It takes a big man to admit they are wrong, and I am not a big man.
 
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jid
Posts: 889
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RE: Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 8:23 pm

Don't forget the 28-300mm L, you might find you will do more with the 28-75mm than you would with the 300-400mm gained.
G7EPN is back after 15 years! Operating all Bands 80mtrs -> 70cms QRZ DX
 
dc10tim
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RE: Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 9:01 pm

I thought that the IS worked in both planes on the 75-300 and with the more 'technical' lenses you had the option of just having it in the vertical direction for panning shots.

Tim.
Obviously missing something....
 
gmonney
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RE: Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 9:05 pm

Not that this is the best route but I am considering the 70-200L IS 2.8, you and as well add a 1.4x converter for the range that I currently get with my 75-300.... I think that the 2.8 and the 70mm will be perfect for all conditions and applications, if i need something shorter, I have the 17-40L 4.0 in the case...,

I am going to add the 100-400L IS later on... in a few years....
Drive it like you stole it!
 
flyfisher1976
Posts: 777
Joined: Tue Jan 04, 2005 1:08 pm

RE: Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 9:48 pm

Wow, thanks for all the positive input and advice!

Getting back to my original question:

Quoting Flyfisher1976 (Thread starter):
So should I still consider this upgrade, or just stick with what I have?

Am I going to really see an improvement in quality and performance big enough to make me feel justified in an upgrade from the 75-300 to the 100-400?
 
sulman
Posts: 1963
Joined: Wed Mar 03, 2004 5:09 am

RE: Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 10:05 pm

The lens is consistently strong at 300-400mm; can be a touch soft at 400mm, but you're shooting through alot of air at that length anyway.

It's more than adequate for this hobby, it's pretty much the lens most Canon-using aviation photographers aspire to anyway.

If it spends most of it's life at 300-400mm, consider going for the 300mm F4 LIS prime, that's another alternative.

James
It takes a big man to admit they are wrong, and I am not a big man.
 
JeffM
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RE: Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 10:30 pm

Quoting Sulman (Reply 11):
consider going for the 300mm F4 LIS prime,

Consider the 300mm f2.8 prime, now that is THE alternative.

Quoting Flyfisher1976 (Thread starter):
I really need someone to "sell" me on this one, because I am starting to doubt the sanity of my plan....

Go rent one and spend a day with it....you'll be online with an order shortly after you return the rental to the shop.
 
Dehowie
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RE: Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 11:19 pm

Exactly what Jeff said.
The differnece in quality is light years and you will never look back.
Darren
2EOS1DX,EF14.2.8LII,17TS,85/1.2,16-35L,24-70LII,24L,70-200F2.8LII,100-400,300/400/500/800L
 
Fly747
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RE: Should I Trade My 75-300 For A 100-400?

Wed Aug 17, 2005 11:55 pm

Quoting Flyfisher1976 (Reply 10):
Am I going to really see an improvement in quality and performance big enough to make me feel justified in an upgrade from the 75-300 to the 100-400?

You WILL see the difference. I recently upgraded from the 75-300mm to 100-400L IS and the pictures just look much better. I also have a few shots at full focal length and there's no comparison to my old lens. I never shot at more than 200mm with the old lens because it just ruined the whole shot. You will feel justified  Wink

Ivan
 
paulinbna
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RE: Should I Trade My 75-300 For A 100-400?

Thu Aug 18, 2005 3:21 am

One word. YES. The auto focus is a lot faster and also the picture are really a lot sharper then 75-300 MM. Although as I hear not as sharp as the 70-200 MM L with th 1.4X. It all comes down to how far away your subject is. Like in ATL you would be switching back and forth between the extender and with out.

The 100-400 lens is a must upgrade.
Canon 50D user; 100-400 MM L IS 10-22 MM, 60MM Macro
 
Jkw777
Posts: 4427
Joined: Fri Sep 26, 2003 11:15 pm

RE: Should I Trade My 75-300 For A 100-400?

Thu Aug 18, 2005 4:46 am

Hey,

I was in this situation exactly this time last year, and I made the jump for the 100-400. I was blown away with this lens! I can suggest making this move, you will not be disappointed that's for certain.

Good luck with your choice, you know it makes sense.

Best Regards,
Justin  Smile

------------------------------
Justin Wood - Woof Photography
jkw6210@btopenworld.com or +447751242989

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