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If you fill the frame on a D3 in DX mode with any given lens and then switch the camera to FX mode, then yes, you will have to physically move forward to fill the frame but that's because the frame is bigger not because the lens is changing focal length.
I know it's a difficult concept for some people to understand as they see an object suddenly filling the viewfinder that before was only occupying 2/3rds of the 'view' so they think that there must be some sort of magnification going on but it's just that now instead of seeing the entire sensor, you are seeing a cropped off section of the same view
Canon 400mm L is usm f/2.8 first choice
add 2x converter thats f/5.6 and focal length is only 3 metres
used with my 5d superb ( equates 800mm at f/5.6 focus 3 metres)
used with my 1D MKIII (equates 900mm pixel for pixel with the 5D)
Other lens I use is 100-400mm L f/4-5.6, 70-200mm L f/2.8, and 100mm Macro f/2.8
All depends on the subject I set out for. Dave
I too am a novice and would like to take sharper images of small garden birds with my Olympus 510 with ED70-300mm f4.0-5.6 telephoto zoom lens. I also have the standard kit lenses ED 14-42mm f3.5-5.6 and ED 40-150mm 4.0-5.6. I would appreciate any help received. Many thanks. Susan
I have a 510 - ditched the larger kit lens for the 18-180 and i use a Sigma 50-500. With these 2 lenses you can cover most things without spending mega-bucks. Yes the results may not match the big 500mm canons etc but for the £530 i paid (delivered from HK) last year I think the results are very good.
If interested I am selling a EC20 2x converter for Olympus (retains auto-focus etc) - would double you 150 to 300mm. Currently on eBay - used 3 times (due to having the 50-500)
Another option ?
Well yet again I'm going to plug the old forgotten 400.
Canon 400mm f5.6
light, superb IQ, lightning fast focus.
True it is a slow lens but at a fraction of the price of the others in its class.
If you're on a budget you should check Ian Kerr for price
£899 I think is his current price
Quote: Well yet again I'm going to plug the old forgotten 400.
Canon 400mm f5.6
light, superb IQ, lightning fast focus.
True it is a slow lens but at a fraction of the price of the others in its class.
If you're on a budget you should check Ian Kerr for price
£899 I think is his current price
You beat me to it! This is the lens I use and its a little gem, the IQ as stated is stunning, tack sharp. I think its under priced for what you get!!
Some will say 400mm is not long enough, however if you add field-craft into the equation its more then enough!
Quote: Well yet again I'm going to plug the old forgotten 400.
Canon 400mm f5.6
Brilliant lens. I'm so impressed with it.
Although I do have the 400mm f5.6. and like it a lot.
If you are prepared to lug it around and pay the premium...... the 500mm f4 is in another league.
Based on a couple of shots (Thank you johnwannop), with it sidekick mounted.
My self i use Nikon 70-300 V.R And a Sigma 80-400 O.S Which it works for me,
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