Which F Number in lens is Suitable For Architecture and Urban landscape photography

[Janabi79]

i am Architect and i do Architecture Photography 

i am Using Canon 6D with Lens Canon 17-40 F4

Ususally the sweet Spot in Architecture & Urban Landscape photography for me is F8 - F11 , Ususally i shoot in F8 for more sharp Foucus .

i can see in market that the New 16-35 F2.8 Mark III is now realesed By Canon 

So is the Bigger Appreature lenses like the 16-35 F2.8 Mark III Considered Better in photography to make the image sharper ? even if i use the F8 in suvh lens ?

I am really hesitated according to my budget , as i i need to invest  either in Canon Tilit Shift 17mm F4 Or i go for 16-35 F2.8 mark III  instead of the 17-40 i am using now ?

Website below contain the Photography works i ususally do , incase you would like to have a look about what kind of photography i ususally do 

http://janabiphotography.com

Regards 

[RobertTheFat]

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@ScottyP wrote:

No one has mentioned the excellent Canon EF 16-35 f/4 IS.  It is as sharp or effectively as sharp as the f/2.8 and half the price and is image stabilized so you can often get by on long shutter shots of architecture without a tripod.  

Or or look at spending for the specialist TS lenses. 

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Methinks I've mentioned it once or twice in the past. I do have it, and it is indeed a very satisfactory lens. 

I bought it in preference to the f/2.8 that was current at the time (probably the Mark II) for the reasons Scott mentioned and because I rarely needed a wide angle lens indoors. If I had been a real estate photographer, I might have felt differently. But I was a landscape and event photographer, and the f/4 made more sense.

[Waddizzle]

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@ScottyP wrote:

No one has mentioned the excellent Canon EF 16-35 f/4 IS.  It is as sharp or effectively as sharp as the f/2.8 and half the price and is image stabilized so you can often get by on long shutter shots of architecture without a tripod.  

Or or look at spending for the specialist TS lenses.  

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I have no doubt that the EF 16-35mm f/4L IS USM is a great lens.  But, it is probably more of a good replacement than an upgrade over the EF 17-40mm f/4L USM.

I am not a real estate or architectural photographer, so I cannot speak for other photographers, but I do not always use a tripod for long shutter shuts, or camera stability.  I frequently use one to get a specific shot perspective or camera height, especially when I am shooting indoors.

For example, the average room has an 8 foot ceiling.  Mounting the camera at the midpoint halfway to the ceiling, four feet above the floor, allows you to level the camera with a wide angle lens, minimizing barrel distortion.  Four feet is also a good starting point for taking indoor shots with a T-S lens, for when you may want to angle the camera away from level.

Crouching down not only looks awkward, it is not a steady way to hold a camera,  Using a tripod allows me to lower the camera, which makes many of my indoor shots look better.