135mm f2 canon vs 100f2 canon vs 70mm sigma 2.8

just comparing the 3 lenses, can you tell which are which

also no pp at all, some reason red on the camera is set to a bit high. from hundreds of images, the 135f2 definitely focuses faster, generally has better image quality, but often the sigma is sharper and sometimes cant tell the 100f2 from the 135, but initially the 100f2 had a hoya filter on it.

Heya,

Just guessing, the way the background to subject relation changes with telephoto focal length increase (ie, flatter background as focal length increases):

First: 100 F2
Second: 135 F2
Third: 70 F2.8

Very best,

these 2 are cropped for content, these 2 are at 2.8, one is the 135f2 and other is the 70mm sigma macro 2.8, no pp, but i cant really tell which is which

pouring thru the pictures, i had my kids label them so i didnt know which was which, ive found that its really hard to make a 135f2 take a bad picture. The 100f2 can look as good, but its not nearly as often, and the 70mm sigma is better than the 100f2 for standard portraits. 100f2 is better at sports, and focuses way quicker than the 70, but the 70 isnt bad. and the macro on the 70 is better than the 100(doesnt have one).

70, 100, 135.

I've had the 85 1.8, 100 2, and 135L. I still have the 100 f2. Of the three, I'd take the 135L in a second. Faster, more accurate focus and quite excellent wide open. The 135L and 18-55 II are two lenses I really regret selling. One is excellent, but expensive. The other is really good, and priced to be disposable.

on the top of the ones at 2.8, the top one is the 70 and the bottom is the 135. The sigma 70 really holds its own against the 135.

Not sure what your shutter speed was with that last 135 L shot but it should be sharper IMO. The contrast is there, though. Up close that Macro really should be sharp and it is.

yea most from the 135 were better, camera is a 5d classic, cropped pretty heavy, 1/320 iso100, the boys were moving around alot.
The one i just added is more indicative of the 135.

As far as the sharpness goes there is nothing in it at these file sizes.

You are changing the compression and the amount of focus falloff, do that test on a bride and ask which she prefers, I imagine the 135 followed by the 100 with her hating the 70 because she has seen the other two.

Each lens has its ideal use, sometimes you are in a small room and a 70mm is the only option to get the shot you want, other times you have the luxury of choice.

The 135mm f/2 lens of mine seems to be very sensitive in regards to shutter speed and sharpness. I found I have to keep the shutter speed as high as I can to optimize the sharpness. IS would really benefit this lens. I have some 1/125 f2.8 with a flash that just arent sharp enough when zoomed in. They look fine at regular size. I love the bokeh and the compression but sometimes forget to get above 1/250 and even higher to maintain the sharpness

I identified all three images correctly.