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04-27-2021, 03:44 PM   #1
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Macro focusing with SMC Pentax 35-70mm F3.5-4.5

Thanks in advance for your response.


I picked up the SMC Pentax 35-70mm F3.5-4.5 off ebay for a great price, mainly to use the pseudo macro. According to the Pentax Forum review, it should focus to 32 cm or approx 12.5 inches, which it does at 35mm.


1: Is there something other than turning the zoom ring to the green 70mm to get to Macro, or should it move further into the green line zone for macro? I don't want to force anything.


2: At 70mm it will only focus 30" distant from the subject, at 50mm about 20" and at 35mm a little over a foot. Am I missing something?

04-27-2021, 04:20 PM   #2
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QuoteOriginally posted by FlyingEagle Quote
1: Is there something other than turning the zoom ring to the green 70mm to get to Macro, or should it move further into the green line zone for macro? I don't want to force anything.
At 70mm there is some resistance (it's the end of the commonly used focal range), push further until you get to the green line and you are at the close focus area.
04-27-2021, 04:30 PM   #3
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When youíre in the green zone, you can adjust the area of effective focus somewhat, and autofocus will work within that range. Itís pretty handy...

-Eric
04-27-2021, 05:16 PM - 1 Like   #4
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You've already go the right answer, and it really works well, great little lens, congrats on getting it.

04-27-2021, 06:49 PM   #5
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I have two copies and both of them require a little force to get into macro mode. I think it's an intentional design point to make sure you don't do it accidentally.

Having said that, it is nothing like the force you'd need to open a jam jar. It's just noticeably stiffer than the rest of the range.
04-27-2021, 08:10 PM   #6
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I have not yet tried the close focusing on mine, though I've had it for years. Thanks for providing this interest. I got it for my film bodies before getting into digital, so now I am looking forward to putting it on m K-1 II. Mine has a problem with a piece of trim around the center coming unglued and then protruding outward. Anyone have this happen? And any suggestions for a specific glue to apply to the underneath of the part of this trim that is now arching off the lens?
04-27-2021, 09:03 PM   #7
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I bought one recently-after reading the reviews; it is a great little lens.

04-27-2021, 10:03 PM   #8
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Try contact cement. You will need to press the corner down firmly for a while. If you have a mini-clamp leave it on overnight.
04-28-2021, 01:05 AM   #9
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QuoteOriginally posted by pentaxus Quote
Try contact cement. You will need to press the corner down firmly for a while. If you have a mini-clamp leave it on overnight.
Huh??
04-28-2021, 01:39 AM   #10
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QuoteOriginally posted by K(s)evin Quote
Huh??
I think that was the answer to mikesbike's post.
04-28-2021, 03:24 PM   #11
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Thanks everyone... it just needed a little extra force to move into the macro mode. Otherwise the lens works perfectly, takes great pix and the macro mode works nicely. The macro images it provides are more than sufficient without investing in a dedicated macro lens. I am very happy with it.


QuoteOriginally posted by JPT Quote
I have two copies and both of them require a little force to get into macro mode. I think it's an intentional design point to make sure you don't do it accidentally.

Having said that, it is nothing like the force you'd need to open a jam jar. It's just noticeably stiffer than the rest of the range.
04-28-2021, 03:40 PM   #12
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I have one and my plan is to use it after flowers start blooming. It came in a box of “old camera stuff” off of FBMP. Looks like it’s never been used.
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