If the sensor size or 'crop factor' is the same on the two cameras, a 28mm and a 32mm lens won't be very different...

Yes, there's quite a difference. At the wide end, every millimeter makes a big difference. At the telephoto end, it doesn't matter as much. If you were to compare, say 290mm and 300mm, you wouldn't see much difference at all..

Now, comparing 28 to 32 will make a difference. If you're in a small room and want to take a photo, you'll love that extra 4mm. When you're at a scenic rest stop and everyone else can only get part of the view in the scene, you'll love that extra 4mm..

I'll bet you'll even get addicted to it. Many good p&s cameras have add on lenses that can make it even wider. SLR cameras of course can swap to lenses as low as 8mm..

-Porter..

Thank you guys for the reply, my comparison is between my:.

1) sony dsc-l1http://www.dpreview.com/reviews/specs/Sony/sony_dscl1.asp.

That is 32mm and has a sensor size of 1/2.7 " (5.27 x 3.96 mm).

And.

2) canon sd800 is ( that I woul like to buy)http://www.dpreview.com/reviews/specs/Canon/canon_sd800is.asp.

That is 28mm and has a sensor size of 1/2.5 ".

Will it be the 28mm much more wide then the 32mm??Why the sensor size matters ??.

I checked these.

Type Aspect Ratio Dia. (mm) Diagonal Width Height.

1/2.7" 4:3 9.407 6.721 5.371 4.035.

1/2.5" 4:3 10.160 7.182 5.760 4.290.

From here.

Http://www.dpreview.com/learn/?/key=sensor%20sizes.

I am really interested in gaining as much mm as I can when I take videos/pictures If I am in a small room and I want that as many people possible fit in my picture..

Thank you very much..

Why the sensor size matters ??.

It doesn't, in this case. Lenses are standardized to the old 35mm film system. The *actual* zoom range is probably like 8mm - 25mm or something like that. Think of it this way:.

Everyone was used to the 35mm system. When digital came around, they wanted to relate to it. They said "35mm - 105mm equivalent" because it's far to much to explain that about sensor sizes and optical ratios. It just makes things easier for everybody because everyone is using the same system..

Sensor size does mean a lot. That's a long story..

-Porter..

This is about what the difference should be:.

28mm.

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32mm.

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Thank you very much guys for all your help , so I guess if I want wider view I just need to get the wider lens.

Thank you very much..

Marcolisi wrote:.

Thank you very much guys for all your help , so I guess if I want widerview I just need to get the wider lens.

Marco - you're right!.

The little Ricoh GX100 has a step-zoom facility that lets you hop from one fixed value to the next, rather than running freely up and down the range..

Here's an overlay of shots taken at the 24, 28 and 35mm settings, to give you an idea of the view - I keep meaning to reshoot indoors as the difference is probably more important, but still haven't done so!.

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Peter - on the green island of Ischiahttp://www.pbase.com/isolaverde..

It depends! I generally agree 100% with the poster who mentioned that 4mm on the wide end makes a bigger difference than on the long or tele end.BUT again, it depends on what you want to use it for and what's imporant to you..

For landscape shots it probably won't matter much. You can usually take a few steps back to get additional coverage OR you can take two or more pictures and simply stitch them together. However, it's confined spaces where wide angle importance really comes into play. Sometimes you simply can't take another step back to frame everything that you would like to have in the pictures - for instance, when you are standing against a wall already - and only if your lens is wide enough you'll get the shot. Indoors is only example, but also outdoors in narrow(er) streets or alleys, taking pictures of buildings or architecture is a challenge if you can't frame your entire subject and you have to make a call whether you cut off the bottom or the top ... due to the angle and perspective stitching images is much harder and requires more postprocessing for these shots..

So, think about where you would need a wider angle and then decide whether a little extra would be useful to you ... If you primary subject is 'birds and wildlife' I wouldn't worry about it..

Hope this helpsbecksi..

Marcolisi wrote:.

Hello guys,.

Is there a real difference beetween a 28 mm wide lens and a 32mm lensin terms of wide angle??.

There are many ways to describe the difference. As someone quipped, the obvious answer is 4mm. .

But that's not too illuminating, since 4mm at full WA is more significant than 4mm at full tele. I'd rather look at the % difference: 4/28 = 14.3%..

Another way is to look at the Field of View (FOV). There are on-line, free resources to help with this. I like Barnack:.

Http://www.stegmann.dk/mikkel/barnack/.

This tells us that a 28mm FF 35mm horizontal FOV is 65 degrees and that a 32mm FF 35mm lens has a 58 degree FOV..

Charlie DavisNikon 5700 & Sony R1HomePage: http://www.1derful.infoBridge Blog: http://www.here-ugo.com/BridgeBlog/..

Well.... My widest was 28mm until I got my Tokina lens (12-24mm) and even at 24mm I have found that it really makes a difference for me... so yah, I think 4mm at that end matters.Heather..

In your opinion , is the canon sd800 IS , the best 28mm ultra compact camera ??yhank u..

On that useful pic....

24mm : 800x60028mm : 685x51432mm : 600x450 (not shown - would be closer to the black box than the red)35mm : 548x411.

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