Anyone using/used 1.6X crop camera with 300 f2.8 and 1.4X tele converter?

[markgardner]

Hi

Just picked up a 30D as a back up/additional body to my 5D.

Interested to here/see from anyone that's used the 30D (or other 1.6X crop body) with 300 f2.8 and 1.4X tele. My maths makes it a 672mm equivalent F4 lens - yikes that's quite big!!

[LMP]

Hi Mark,

Yep I used a 350D with my 300 2.8 plus a TC earlier in the year for some Cricket. I found that extra bit of reach handy compared to the 1.3 crop of my 1D.

[markgardner]

A vaguelly related question, is the EOS-1D Mark II N full frame, i note you say the 1D 1.3 crop.

[Billginthekeys]

no, only the 1Ds, 1DsMKII, and 5D are full frame. the 1D series has a 1.3x crop.
I have a 20D and 300 2.8, but dont own a 1.4x yet, everything ive heard suggests it still performs amazingly good, even great with the 2X. In the words of Ferris Bueller "if you have the means, id highly suggest you pick one up"

[markgardner]

Interesting, thanks, so lots of 'pro' shots we see may effectively be taken with a 390mm or 520mm, as opposed to 300mm or 400mm.

[Billginthekeys]

Interesting, thanks, so lots of 'pro' shots we see may effectively be taken with a 390mm or 520mm, as opposed to 300mm or 400mm.
for general principle (and how confusing it would make things with the different crops). photographers do NOT add the crop factor of the sensor when referring to the lens, or what mm the shot was taken at. the image may show the reach of a 390mm lens, but it still has the same perspective of a 300mm lens, just cropped to the center.

[markgardner]

But it's very relevant when considering shooting position, lens choice, 'reach', cropping, etc, isn't it?

[basroil]

1.6 crop+300+1.4 tc = headshots from 90 feet... use with caution ;)

[markgardner]

Yes, I appreciate that. The goal at the far end of a footy pitch is a good 300ft away! Was just interested if anyone had used them together.

[Croasdail]

A friend of mine uses a 600 + 1.4, with a 400 + 1.4 on his second camera. both bodies are mk IIs. So yes... it is done all the time. Many of Gavins shots are done with a 1.4 tc attached. Feel free to use it.

[wilky95]

I use the bigma 50-500 f4 on my 30d all the time for equine events and it rocks. as long as the shutter speed is over 800 it freezes all movment ,I do go to 600 at times but try not to as all my shots are hand held. have a look at my site and see the Somerton show they were all hand held with a lot at 500mm


Martin.





Hi

Just picked up a 30D as a back up/additional body to my 5D.

Interested to here/see from anyone that's used the 30D (or other 1.6X crop body) with 300 f2.8 and 1.4X tele. My maths makes it a 672mm equivalent F4 lens - yikes that's quite big!!

[Lightchaser]

I use the bigma 50-500 f4 on my 30d all the time for equine events and it rocks. as long as the shutter speed is over 800 it freezes all movment ,I do go to 600 at times but try not to as all my shots are hand held. have a look at my site and see the Somerton show they were all hand held with a lot at 500mm


Martin.

How do you rate it for sharpness?

[wilky95]

Fantastic, much better than my tameron, I find that f8-f11 the best and 200 to 450mm if you use a tripod then its outstanding. if you go to my website go to somerton minimus pairs and look at the distance shots along the hedge line and a small jump those were at 500mm hand held, the distance was a good 200 mtrs or more.

Martin.





How do you rate it for sharpness?

[GyRob]

if you put it on a 400d and crop back to what a 1.6 20d /30d gives in MP's you gain more reach aprox 50mm extra on a 300mm lens so would be even more with a tc added.
i think my math,s are right .
Rob

[Tareq]

I have two 1.6x bodies and one 1.3x body and 1.4x TC, but i don't have 300 f2.8

[morehtml]

I use 30D and 300 2.8 + 1.4TC all the time. What's not to like about it? Get the 2XTC as well for this lens.

[In2Photos]

if you put it on a 400d and crop back to what a 1.6 20d /30d gives in MP's you gain more reach aprox 50mm extra on a 300mm lens so would be even more with a tc added.
i think my math,s are right .
Rob

What??? Are you trying to say that the 400D will allow you to crop and still maintain IQ based on the fact that it is a 10 MP camera as opposed to the 8 MP of the 20D/30D?

[gasrocks]

I use the 300/2.8 Is and a 2x often for hand holdable birding on my 20D. Always suprizes me how good the quality is.

[GyRob]

What??? Are you trying to say that the 400D will allow you to crop and still maintain IQ based on the fact that it is a 10 MP camera as opposed to the 8 MP of the 20D/30D?
YEP 480mm on a 1.6 crop 8mp and 516mm on a 1.6crop 10mp you gain 36mm over the 20d 30d - 672mm with a 1.4tc but on the 400d it would be 722mm this is because you multyply by 1.72 Not 1.6 to get the same pixel count - hard to get your head round i know but its true :)
Rob.

[malla1962]

YEP 480mm on a 1.6 crop 8mp and 516mm on a 1.6crop 10mp you gain 36mm over the 20d 30d - 672mm with a 1.4tc but on the 400d it would be 722mm this is because you multyply by 1.72 Not 1.6 .
Rob.So what do you lose if mounted on a 6MP 1.6 crop body?:D

[GyRob]

So what do you lose if mounted on a 6MP 1.6 crop body?:D
aske Rommy he worked it out for me ;) way beyond my math's :o
Rob.

[jevidon]

YEP 480mm on a 1.6 crop 8mp and 516mm on a 1.6crop 10mp you gain 36mm over the 20d 30d - 672mm with a 1.4tc but on the 400d it would be 722mm this is because you multyply by 1.72 Not 1.6 to get the same pixel count - hard to get your head round i know but its true :)
Rob.
that's precarious ground you are stepping on. it took me a while to fully comprehend this, but it is incorrect to be multiplying the focal length. The DOF will be the same, the distance of the subject will appear the same....the only difference is what part of the subject is hitting your sensor. with a 1.6x sensor, it simply isn't large enough to capture everything that is seen by a FF sensor. The only discernable advantage IMO is having the AF points covering more of the subject you are targeting.

[In2Photos]

YEP 480mm on a 1.6 crop 8mp and 516mm on a 1.6crop 10mp you gain 36mm over the 20d 30d - 672mm with a 1.4tc but on the 400d it would be 722mm this is because you multyply by 1.72 Not 1.6 to get the same pixel count - hard to get your head round i know but its true :)
Rob.
So now more MP=longer lens? I think the newbies will surely be confused when they read this. I know what you are trying to say but the way you have it worded is really confusing.

[GyRob]

So now more MP=longer lens? I think the newbies will surely be confused when they read this. I know what you are trying to say but the way you have it worded is really confusing.
well this is how it came to me lol

basically correct Rob, but let me clarify it further based on AOV and pixel size:

1. The 30D/20D/350D are 1.6 times "longer" than a mythical FF sensor with a similar number of pixels (8 MP).

2. The 400D with its 10 MP at the same sensor size is 1.12x "longer" than the 30D/20D/350D.

You can compute it in two ways (we take the 350D's sensor, which at 8.0 MP is a tiny bit smaller than the 30D/20D's 8.2 MP) :

1. Via pixel pitch

Extra reach = 6.4 microns/5.7 microns = 1.123

2. Via number of pixels

Extra reach = square root of (10.1/8.0) = 1.124

Romy
(and a big thanks to Romy for woring it all out )

[In2Photos]

well this is how it came to me lol

basically correct Rob, but let me clarify it further based on AOV and pixel size:

1. The 30D/20D/350D are 1.6 times "longer" than a mythical FF sensor with a similar number of pixels (8 MP).

2. The 400D with its 10 MP at the same sensor size is 1.12x "longer" than the 30D/20D/350D.

You can compute it in two ways (we take the 350D's sensor, which at 8.0 MP is a tiny bit smaller than the 30D/20D's 8.2 MP) :

1. Via pixel pitch

Extra reach = 6.4 microns/5.7 microns = 1.123

2. Via number of pixels

Extra reach = square root of (10.1/8.0) = 1.124

Romy
(and a big thanks to Romy for woring it all out )

I get all this but if we follow this principle we will eventually be able to shoot long distance birds with a "mythical" 500MP sensor and a 50mm lens (no I didn't do the math, just speculating).:rolleyes:

And no disrespect meant to Rob or Romy I just think this is a bad way to look at the extra 2MP of the 400D.

[GyRob]

I get all this but if we follow this principle we will eventually be able to shoot long distance birds with a "mythical" 500MP sensor and a 50mm lens (no I didn't do the math, just speculating).:rolleyes:

And no disrespect meant to Rob or Romy I just think this is a bad way to look at the extra 2MP of the 400D.
well to be honest i think im the only one looking at it this way but could not work out the field of view/ mp's bit, this thred exsplains more about it and my way of thinking ;)
Rob.
http://photography-on-the.net/forum/showthread.php?t=211387